Term
| What is the scientific method and all of its steps? |
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Definition
A series of steps used to approach a problem.
1. Question
2. Problem
3. Hypothesis
4. Experiment
5. Conclusion |
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Term
| What is a controlled experiment? Why is it important? |
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Definition
| The experiment that has no change. The controlled variable and the experimental are kept at the same similarities |
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Term
| Convert the following into scientific notation: 3.1 X 107 |
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Definition
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Term
| What are all the basic SI (metric) units for mass, temperture, length, and volume? |
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Definition
Mass = Grams
Temperture = Celsius
Volume = Liters
Length = Meters
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Term
| Know the values and meanings of kilo, hecto, deka, deci, centi, and milli. |
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Definition
Kilo = k, 1,000; 103
Hecto = h, 100, 102
Deka = da, 10, 101
Deci = d, 0.1, 10-1
Centi = c, 0.01, 10-2
Milli = m, 0.001, 10-3 |
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Term
Know the basic tools for measuring mass, temperature, length, voulume, and etc.
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Definition
Mass = Balance Beam
Volume = Beaker, Flask, Pipette, Burette, and Graduated Cylinder
Temperature = Thermometers
Length = Rulers |
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Term
What is the conservation of mass?
Why is it important?
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Definition
| Mass is neither created nor destroyed |
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Term
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Definition
| a unit of astronomical distance that light travels in one year |
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Term
What is the big bang theory?
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Definition
| The big bang theory is the whole universe was in hot dense state 13.7 billion years ago the universe started with a big bang |
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Term
| Be able to calculate speed, velocity, distance, time, and acceleration. |
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Definition
| Speed = d/t Velocity = d/t Distance = s x t Time = d/s Acceleration = f/m |
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Term
| How long does it take for the moon to go through its phases? To travel around the Earth? |
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Definition
| 27.3 days to orbit earth and regular is 29.5 |
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Term
What are Newtons 3 laws Of motion? Give examples for each.
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Definition
1. And object in motion/rest will stay in motion/rest unless acted upon by an outside force.
2. The acceleration of an object is directly proportional to the net force acting upon it.
3. For every action there's an equal but opposite reaction |
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Term
In the compound Al2(SO4)3, how many atoms I are in the compound? How many oxygen atoms? |
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Definition
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Term
| Tell me which of the following are physical or chemical changes: freezing point, density, rusting iron, cooking eggs, burning wood, dissolving salt, and buoyancy. |
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Definition
| Physical:Freezing point, density, rusting iron Chemical:cooking eggs, dissolving salt, burning wood, buoyancy |
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Term
| What is always true about density of a substance? |
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Definition
| The density of a substance varies with the samples of that substance. |
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Term
| Explain the difference between a pure substance and a mixture. |
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Definition
| A pure substance is any type of material a mixture is substance made by mixing other substances together. |
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Term
What are the parts of a solution? |
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Definition
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Term
| What are the ways you can dissolve a solute faster? Give all three and how they change the process. |
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Definition
| increase temperature, surface air, and stir faster and put pressure. |
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Term
| Know the history up through modern atomic theory and then tell me the location of the electron, proton, and neutron. |
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Definition
| Electron outside the nucleus, protons and neutrons inside the nucleus |
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Term
| Know how to find the number of protons, electrons, and nuetrons off the periodic table. |
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Definition
| protons and electrons are the atomic number and neutrons plus protons equal the atomic mass |
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Term
| Be able to compare and contrast elements off the periodic table. |
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Definition
| Group one is alkali metals and Boron is a metalloiod |
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Term
| Know the trends of the periodic table families: alkali metals, alkali earth metals, transition metals, halogens, semiconductors/metalloid, and noble gases. |
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Definition
| Alkali metal are the first group |
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Term
| Why do atoms have no electric charge? |
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Definition
| Since there are an equal of positively charged particles and negatively charged particles then the net charge is zero. |
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Term
| Why is a mixture different from a compound? |
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Definition
| a mixture is two different substances while a compound are substances that are chemically bonded to each other. |
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Term
| Elements on the periodic table are organized by what two things? |
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Definition
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Term
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Definition
| An element can donate one or more to another element to make it equal. when it gives off its anion when it gains its cation |
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Term
| What are two types of bonding? |
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Definition
| Covalent bonding an dionic bonding. |
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Term
| How many galaxies exist in the universe? |
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Definition
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Term
| What are the main differences between the inner and outter planets in our galaxy? |
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Definition
| inner planets small size outter planets huge! |
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Term
| How are galaxies classified? |
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Definition
| spiral, barred spiral, elliptical and irregular |
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Term
| Why do we have day and night on earth? Why do we have seasons? |
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Definition
| we have day and night because the earth rotates on its axis and as it rotates the sun would hit it on some postitions |
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Term
| How will the sun change as it ages? What would happen to the inner planets? |
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Definition
| The sun might become a nebula and its starting to expand |
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Term
| Know the difference the main difference between a heliocentric and geocentic belief. |
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Definition
| heliocentric is when the sun is the center of the universe while geocentric is when the earth is the center of the universe. |
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Term
| Approximately how old is the universe? |
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Definition
| around 14 billion years old |
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Term
| If an object is at rest, what are its speed, velocity, and acceleration? |
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Definition
| the speed is 0 the velocity is 0 and the acceleration is 0, since its at rest. |
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Term
| Tell me what the name of the slope on a distance-time graph or velocity-time graph. |
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Definition
| distance vs time velocity vs time |
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Term
| Can you have a negative slope on a graph. Tell me how. |
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Definition
| yes. when the acceleration is negative. if the slope goes upwards. |
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Term
| Why is a computer more accurate than a person when timing data. |
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Definition
| a computer is more accurate then a person because, a computer has a mind of its own. it has all the great minds into one. and us humans dont know many things so a computer can do things faster then humans. |
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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
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Term
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Definition
| Are also called solutions. two substances that are mixed in equal proportions throughout. |
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Term
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Definition
| A neutron star (burnt-out star) that emits radio waves which pulse on and off. |
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Term
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Definition
| A solution is a homogeneous mixture of two or more substances. A solution may exist in any phase. |
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Term
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Definition
| Has a rigid structure, has true shape, not able to move as easily. |
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Term
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Definition
| The number of protons. Also the number of electrons. |
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Term
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Definition
| Has a negative charge found outside the nucleus |
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Term
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Definition
| 1 or 2 letter code for a chemical element |
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Term
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Definition
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Term
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Definition
| 2 people pushing at different directions the force that is stronger is the net force |
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Term
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Definition
| Is the resistive force when two surfaces travel along each other when forced against each other |
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Term
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Definition
| the earth and other planets rotate around the sun |
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Term
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Definition
| The sun is the center of the earth |
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Term
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Definition
| Kepler discovered that the planets go in elliptical orbit |
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Term
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Definition
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Term
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Definition
| When a solid changes its state into a liquid |
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Term
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Definition
| Conduct heat and electricity very reactive stretched and shaped into wires, or flat shapes |
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Term
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Definition
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Term
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Definition
| Smallest particle of matter |
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Term
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Definition
| Compounds are substances containing atoms that are chemically bonded to each other. Separating the atoms requires a chemical change. |
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Term
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Definition
| Are also called solutions two sun |
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Term
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Definition
| A supernova is a stellar explosion that is more energetic than a nova. It is pronounced with the plural supernovae or supernovas. |
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Term
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Definition
| Substance being dissolved |
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Term
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Definition
| closely packed matter but free to slide past each other, takes shape of container, has mass |
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Term
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Definition
| number of protons plus the number of nuetrons |
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Term
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Definition
| Positively charged found outside the nucleus |
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Term
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Definition
| Each row is a period. There are 7 periods. Corresponds to the number of rings. |
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Term
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Definition
| Like speed but it just involves direction |
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Term
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Definition
| Two forces that are equal in size and opposite in direction |
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Term
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Definition
| When the Earth is closest to the sun |
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Term
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Definition
| Everything revolves around the Earth |
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Term
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Definition
| The controlled experiment. The variable that doesn't change |
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Term
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Definition
| When a gas changes its state into a liquid. |
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Term
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Definition
| When a liquid becomes a solid |
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Term
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Definition
| No characteristics of metals. |
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Term
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Definition
| Used for measuring volume |
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Term
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Definition
| Are substances that are composed of one type of atom. These are the simplest units of matter that are able to retain all properties of matter. |
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Term
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Definition
| Any substance that has a fixed composition and definite properties. |
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Term
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Definition
| A heterogeneous mixture of two or more substances. In a suspension very few pieces of solid are spread through a liquid but do not dissolve. |
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Term
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Definition
| A very large star of high luminosity and low surface temperature. |
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Term
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Definition
| Capable of dissolving another substance |
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Term
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Definition
| Smallest state of matter, no shape, fast moving, free to spread in all directions |
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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 charge |
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Term
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Definition
| No charge. Found inside the nucleus. |
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Term
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Definition
| Each column of the periodic table is a group. The vertical column. |
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Term
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Definition
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Term
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Definition
| Increase in the rate or speed of something. |
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Term
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Definition
| When the Earth is farthest from the sun. |
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Term
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Definition
| An apparent change in direction of an object, caused by a in observational position that provides a new sight. |
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Term
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Definition
| Directed or moving backward |
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Term
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Definition
| The output or the effect or is tested to see if it is the affect |
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Term
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Definition
| A point at which a liquid turns into vapor |
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Term
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Definition
| The degree of a compactness of a substance |
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Term
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Definition
| When elements have characteristics of metals and non-metals |
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Term
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Definition
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Term
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Definition
| All the planets revolve around the sun |
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Term
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Definition
| Was the one who discovered the 3 laws of motion |
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Term
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Definition
| Arranged and made the periodic table |
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Term
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Definition
| According to Dalton all atoms of a given element were exactly alike and atoms of different elements could join and form compounds. |
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Term
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Definition
| Discovered the place that is closest to the sun is perihelion and the place that is farthest is aphelion |
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Term
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Definition
| Calculated the earths circumference and knew the summer solstice |
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Term
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Definition
| Thompsons cathoderay tube experiment suggested that cathodes rays were made of negatively charged particles that came from inside atoms. |
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Term
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Definition
| Formed the heliocentric model earth rotates at its azis |
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Term
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Definition
| Proposed that most of the mass of an atom was concentrated at the atoms center. |
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Term
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Definition
| The earth is at the center of the universe with the sun, moon, planets, and stars revolving about it in circular orbits. |
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Term
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Definition
| Suggested that energy of each electron was related to the electrons path around the nucleus |
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Term
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Definition
| used telescope relied on venus and wrote dialogue on two great world systems. |
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Term
| Convert the following measurements: 2500 mm to dkm, 0.034hg to cg |
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Definition
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