Term
| What is a controlled experiment? |
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Definition
| What a controlled experiment is testing a hypothesis using a series of steps with controlled conditions. |
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Term
| What is the scientific method and all of its steps? |
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Definition
1.Make an observation
2. Make a question.
3. Collect all of the data.
4. Formulate a hypothesis
5. Test the experiment.
6. Make a conclusion.
7. Develop a theory of a new hypothesis. |
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Term
| What is an independent variable? |
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Definition
| What an independent variable is the factor being changed by the person doing the experiment. |
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Term
| What is a dependent variable? |
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Definition
| What a dependent variable is the factor being measured in an experinemt. |
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Term
| What is a graduated cylinder and what unit does it measure? |
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Definition
| What a graduated cylinder is it measures volume and the unit it's measured is liters. |
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Term
| What is the difference between accuracy and precision? |
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Definition
| Accuracy is when how well you aim you look at it and precision is when the measurement is consistently reproduced. |
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Term
| Convert 3.1x10 to the seventh power and 3.1x10 to the negative seven in scientific notation? |
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Definition
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Term
| What are the bacis SI Units for mass, temperature, length, and volume? |
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Definition
| Mass is weight, temperature is degrees, length is dimension, and volume is space. |
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Term
| What is kilo,hecto,deci,centi, and milli? |
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Definition
| Those are used to convert numbers into scientific or standard notation. |
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Term
| What are the tools used for measuring mass, temperature, length, and volume? |
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Definition
| A double beam/triple beam balance is used for mass, a themometer is used for temperature, a ruler or meter stick is used for length, and a graduated cylinder is for volume. |
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Term
| Convert the following measurements: 2500 mm to dkm, .034 hg to cg. |
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Definition
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Term
| What is the conservation of mass and why is it important? |
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Definition
| What the conservation of mass is mass and energy are both conserved. Neither mass nor energy can be created or destroyed. Why the conservation of mass is important because these principles are fundamental laws of physical science. |
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Term
| What is the Big Bang Theory? |
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Definition
| What the Big Bang Theory is the theory of the universe starting 13.7 billion years ago by a big explosion. |
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Term
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Definition
| What a light year is a distance a light travels in a year. |
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Term
| Who is Aristotle and what did he discover? |
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Definition
| Aristotle is a Greek philosopher and he discovered the phases of the moon and eclipses by using a model of the solar system with earth at the center. |
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Term
| Who is Newton and what did he discover? |
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Definition
| Newton is a British scientist and he discovered a relationship between motion and force in there laws called Newton's three laws of motion. |
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Term
| Who is Mendeleev and what did he discover? |
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Definition
| Mendeleev is a Russian chemist and he discovered physical properties of more than 60 elements. |
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Term
| Who is Dalton and what did he discover? |
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Definition
| Dalton was an English schoolteacher and he discovered that all atoms of a given element were exactly alike, and atoms of different elements could join to form compounds. |
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Term
| What did Kepler discover? |
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Definition
| Kepler discovered that orbits around the sun are ellipses. |
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Term
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Definition
| Anything that has mass and takes up space. |
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Term
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Definition
| A group of atoms that are held together by chemical forces. |
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Term
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Definition
| An atom is the smallest unit of an elememt that maintains the chemical properties of that element. |
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Term
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Definition
| A compound is a substance made up of atoms or two or more different elements joined by chemical bonds. |
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Term
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Definition
| An element is a substance that cannot be separated or broken down into simpler substances by chemical means. |
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Term
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Definition
| A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas. |
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Term
| What is a pure substance? |
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Definition
| A sample of matter, either a single element or a single compound, that has definite chemical and physical properties. |
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Term
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Definition
| The rate at which velocity changes over time. |
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Term
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Definition
| A solution, the substance in which the solute dissolves. |
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Term
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Definition
| An atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge. |
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Term
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Definition
| A subatomic particle that has no charge and is located in the nucleus of an atom. |
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Term
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Definition
| An element that is shiny and that conducts heat and electricity well. |
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Term
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Definition
| An element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution. |
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Term
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Definition
| The temperature and presssure at which a solid becomes a liquid. |
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Term
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Definition
| The temperature and pressure at which a liquid becomes a gas. |
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Term
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Definition
| The temperature and pressure a liquid becomes a solid. |
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Term
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Definition
| The ratio of the mass of a substance to the volume of the substance. |
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Term
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Definition
The change of state from a gas to a liquid.
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Term
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Definition
| The change of state from a liquid to a gas. |
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Term
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Definition
| A subatomic particle that has a positive charge and that is located in the nucleus of the atom. |
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Term
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Definition
| The force of friction always opposes the motion. |
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Term
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Definition
| The speed of an object in a certain direction. |
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Term
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Definition
| A horizontal row of elements in a periodic table. In physics, the time that it takes a complete cycle or wave oscillation to occur. |
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Term
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Definition
| The distance traveled divided by the time interval during which the motion occured. |
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Term
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Definition
| In a solution, the substance that dissolves in the solvent. |
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Term
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Definition
| A gigantic explosion in which a massive star collapses and throws its outer layers into space. |
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Term
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Definition
| When earth spins on its axis. |
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Term
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Definition
| It is made up of a solvent and a solute. |
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Term
| What is a homegenous mixture? |
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Definition
| The solution looks the same and looks like it's one thing. |
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Term
| What a is a heterogenous mixture? |
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Definition
| The solution looks like more than one thing. |
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Term
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Definition
When earth revolves around the sun.
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Term
| What did Niels Bohr discover? |
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Definition
| Electrons behave mroe like waves on a vibrating sting than like particles. |
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Term
| What did Rutherford discover? |
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Definition
| Most of the mass of the atom was concentrated at the atom's center. |
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Term
| What did Thompson discover? |
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Definition
| His catheoderay tube experiement suggested that cathode rays were made of negatively charged particles that came from inside atoms. |
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Term
| What are the parts of a solution? |
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Definition
| The solvent and the solute. |
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Term
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Definition
| The sum of the numbers of protons and neutrons in the nucleus of an atom. |
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Term
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Definition
| The point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun. |
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Term
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Definition
| The point in the orbit of a planet, asteroid, or comet at which it is closest to the sun. |
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Term
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Definition
| A subatomic particle of about the same mass as a proton but without an electric charge. |
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Term
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Definition
| A stable subatomic particle with a charge of negative electricity. |
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Term
| What is an atomic number? |
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Definition
| The number of protons in the nucleus of an atom; the atomic number is the same for all the atoms of an element. |
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Term
| What are Newton's 3 laws of motion? |
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Definition
| 1st law of motion is an object in motion stays in motion unless acted upon by an outside force. 2nd law of motion is The unbalanced force acting on an object equals the object's mass ties its acceleration. For every action force, there is an equal and opposite reaction force. |
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Term
| What two things make the elements in the periodic table organized? |
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Definition
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Term
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Definition
| The elements in a family have the same number of valence electrons. |
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Term
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Definition
| Galileo discovered Jupiter's four largest satellites, named Ganymede, Callisto, Io, and Europa. |
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Term
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Definition
| Proposed a sun-centered model and it was that Earth and other planets orbit the sun in perfect circles. |
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Term
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Definition
| Had a theory that that the sun, moon, and planets orbited Earth in perfect circles and that day-to-day life, including motions of the sun and planets. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Newton stars or spinning neutron stars that are sources of pulsating radio waves. |
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Term
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Definition
| Apparent shift in position caused by a change in viewing angle. |
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Term
How many atoms and oxygen atoms are in this following compound?
Al2(SO4)3 |
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Definition
| There are 5 atoms and 4 oxygen atoms. |
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Term
| How many galaxies are in the universe? |
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Definition
| There are more than 100 billion galaxies. |
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Term
| What is the difference between a geocentric belief and heliocentric belief? |
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Definition
| A heliocentric belief is a theory from the sun and geocentric is a theory from the earth. |
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Term
| Why do atoms have no electric charge and why do ions have electric charge? |
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Definition
| Atoms are made from chemical properties and ions are made from electrons. |
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Term
| What is always true about the density of a substance? |
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Definition
| The ratio is always the mass of a substance to the volume of the substance. |
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Term
| What is the difference between a mixture and a pure substance? |
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Definition
| Mixtures are 2 or more elements or compounds and pure substances are only 1 element or 1 compound. |
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Term
| Why do we have day and night and why do we have seasons? |
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Definition
| We have day and night because the sunlight strikes earth from different angles and we have seasons because of earth's tilt toward the sun or away from the sun. |
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Term
| How long does it take for the moon to go through its phases? |
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Definition
| 29.5 days to go around all of its phases. |
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Term
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Definition
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Term
| How are the galaxies classified? |
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Definition
| They are classified by the amount of stars and differ in structure. |
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Term
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Definition
| Whenever there is a net force acting on an object, the object accelerates the direction of the net force. |
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Term
| If an object is at rest, what is the speed, velocity, and acceleration? |
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Definition
| The speed, velocity, and acceleration of an object at rest is 0. |
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Term
| Find the density if the mass is 250 g and the volume is 15 cm cubed. |
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Definition
d=m/v
d=250 g/15 cm cubed
d=16.7 g/cm squared |
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Term
| A piece of tin has a mass of 16.52 g and a voume of 2.26 cm cubed. What is the density of the tin? |
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Definition
d=m/v
d=16.52 g/2.26 cm cubed
d=7.3g/cm squared |
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Term
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Definition
| When all of the particles are spread out. |
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Term
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Definition
| When all of the particles are packed together. |
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Term
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Definition
| When all the particles are sligtly packed together. |
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Term
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Definition
| An atom that has a positive charge. |
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Term
| What is a chemical symbol? |
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Definition
| Represents the symbol of a element. |
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Term
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Definition
| When they become compounds. |
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Term
| Where are the nucleus, proton, and neutron located in an atom? |
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Definition
| The nucleus is in the center of the atom, the proton is in the center of the atom, and neutron is located outside the atom. |
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Term
| Why is a computer more accurate than a person when timing data? |
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Definition
| A computer has more information and stops right away and a person could not be paying attention and get the wrong time. |
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Term
| What is the difference between inner planets and outer planets? |
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Definition
| Inner planets are more to the sun and outer planets are less dense to the sun. |
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Term
| Where are the alkali metals, alkali earth metals, transition metals, halogens, metalloids, and noble gases located? |
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Definition
| Alkali metals are in group 1, alkali earth metals are in group 2, transition metals are from groups 3 to 12, halogens are group 17, metalloids are the zig zag line betwwen groups 13 and 14, and noble gases are located in group 18. |
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Term
| How do you find protons, electrons, and neutrons off the periodic table? |
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Definition
| Protons and electrons have the same as the atomic number and neutrons you have to subtract the atomic mass by the atomic number. |
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Term
| What is the difference between a mixture and a compound? |
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Definition
| A mixture is 2 or more substances and a compound is 2 or more elements. |
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Term
| What are three ways you can dissolve a solute faster? |
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Definition
| Melting poing, boiling point, and freezing point, |
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Term
| Name these objects or things physical or chemical changes. Freezing point, density, rusting iron, cooking eggs, burning wood, dissolving salt, and buoyancy. |
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Definition
| Freezing is physical change, density is chemical change, rusting iron is chemical change, cooking eggs is chemical change, burning wood is chemical change, dissolving salt is chemical change, and buoyancy is physical change. |
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Term
| What is a balanced force? |
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Definition
| When two equal and opposite forces are applied on a body in two exactly different directions. |
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Term
| What is an unbalanced force? |
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Definition
| The forces are equal and opposite to each other and is in an opposite direction. |
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Term
| Compare and contrast elements off the periodic table. |
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Definition
| Some element groups are less reactive than others and some protons have and different groups of elements in the periodic table. |
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Term
| What is the difference of a distance vs. time graph? |
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Definition
| A distance group is when it travels at a constant rate and time graph is when it when it has an average speed and rate. |
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Term
| How do you calculate speed, velocity, time, and acceleration? |
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Definition
| You use a matter triangle and you either multiply or divide. |
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Term
| What is the slope on a distance vs. time graph? |
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Definition
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Term
| Can you have a negative slope? |
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Definition
| No you cannot have a negative slope. |
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Term
| How far an arrrow released from an archer travels at a speed of 65 m/s for 22.5 seconds? |
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Definition
s=r*t
s=65*22.5
s=1462.5 m/s sqaured |
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Term
| What is the accleration of a car when she slows done from 45 m/s to 12 m/s om 7.5 seconds? |
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Definition
a=iv*v over time
a=45*12 over 7.5 seconds
a=72 m/s squared. |
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Term
| What does elliptical mean? |
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Definition
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Term
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Definition
| A nonmetal forming with a metal to form an alloy. |
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Term
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Definition
| He is a Greek Philiospher and invented the system or latitde and longitude. |
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