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Using your senses to gather information; it is the basis for ALL science.
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| Data tables and charts are extremely important because |
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| they lead to drawing conclusions |
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| Most data collected by scientists is |
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| Give a visual image of observations |
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| The shiny, smooth, lemony smelling whiteboard is in the science room. |
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| Table that should not cahnge |
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| the lights are off in the classroom, they must be watching a movie. |
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| improve observations made with our sense of sight |
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| this is the only variable that can be changed in an expirament |
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| a student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. The independent variable and dependent variable are? |
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independent: mass of paper plane
dependent: distance it would fly |
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| the variable that should be controlled is |
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| a __________ is a factor that can change in an expirament |
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| the most precise type of observation is a ___________ observation because they include measurements |
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| noticing that the sky is dark and hearing thunder in the distance are examples of _________________. |
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| what weighs more, a ton of lead or a ton of feathers. Because they both weigh a ton, the ________________ would be the same. |
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| a ton of feathers would take up more space than a ton of lead; therefore, the ton of feathers would occupy a greater ______. |
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| calculate the density of an object with a mass of 50 grams and a volume of 10 cm3. Label the answer with the correct unit. Show all work |
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| a 100 kg object contains the same amount of matter as a |
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| SI units are easy to use because |
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| units are based on the #10 |
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| an advantage of using the international system of Units is that it |
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| gives scientists a common way to share the results. |
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| what term reffers to the amount of space an object takes up? |
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| what is the volume of a block of wood that is 3 cm long, 2 cm wide, and 6 cm high? show all work. |
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| a graduated cylinder contains 10mL of water. a stone is dropped into the cylinder and the water level rises to 17mL. What is the volume of the stone?????? show all work |
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try to find the volume of a rectangular solid with these measurements. (show all work)
21m X 4800mm X 230cm |
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| unit used to measure the volume of liquids |
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| length X width X height to find the volume |
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| the measure of the force of gravity acting on an object. |
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| one cm3 is exactly equal to one _______________. |
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| amount of mass per unit of volume |
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| distance from one point to another |
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| use the displacement method to find the volume |
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| a measure of the hotness or coldness of something |
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| remains the same where ever the object may be |
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| curved shape of liquid on a graduated cylinder |
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| coldest possible temperature |
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| how many nuetrons are in an atom of magnesium? |
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| how many protons are in an atom of phosphorus? |
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| what is the total number of electrons in an atom of sodium? |
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| what is the atomic number of aluminum? |
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| what is the atomic mass of sodium? |
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| what is the name given to the elements in groups 3 to 12? |
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| copper has two isotopes that are fairly common in nature.. copper-63 and copper-65. the average atomic mass is 63.546. which isotope of copper is more common????????? |
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| why are lanthanides and actinides found at the bottom of the periodic table? |
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| because if they were in it the table would be way too long! |
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| The horizontal rows in the periodic table are know as ____________________. |
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| the elements in each __________ of the the periodic table generally have the same number of electrons. |
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| describing a medal as ____________ means that it can be pounded into a thin sheet without breaking. |
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| liquid at room temperature! (besides mercury) |
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| in the periodic table the most reactive medals are found |
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| in family one, the first colum |
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| which group contains the most elements? |
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| the most reactive nonmetals are found in |
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| flourine, chlorine, bromine, and iodine are apart of a group called |
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| which group of elements shares characteristics with both metals and nonmetals? |
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| Mendeleev created the first periodic table by arranging elements in order of |
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| the factor that determines the reactivity of an element is the |
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| number of the valence electrons |
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| where are nonmetals located on the periodic table? |
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| to the right of the zigzag line |
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| when rutherfored performed his metal foil experiment, he was surprised that a few of the alpha particles |
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| bounced back from the foil |
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| Which elements have two valence electrons in their outer orbitals? |
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| the elements that do not ordinarily combine with other elements because they are nonreactive are the |
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| thompsons expirament lead to the y of the |
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| Rutherfords contribution to atomic models was the discovery of the |
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| the modern day model of the atom is the |
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| what three elements are magnetic? |
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| why is bromine a special nonmetal? |
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| because it is liquid at room temperature |
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| which of the following best describes the particles of a liquid? |
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the particles are close together
they are moving past each other |
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| has particles that are not in an orderly arrangment. |
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| which of the following is MOST likely to undergo sublimation? |
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| solid carbon dioxide (aka dry ice) |
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| The four most familiar states of matter are |
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| Solid, Liquid, Gas, Plasma |
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| a substance that pours very slowly at a high temperature has a high ________________! |
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| freezing and ________________ occur at the same temperature. |
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| Which of the following has the lowest viscosity? |
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| The measure of the average kinetic energy of the particles of a substance is the __________. |
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| liquids form round drops on surfaces as a result of |
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| Which of the following statements describe evaporation? |
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1. Form of vaporization
2. from a surface of a liquid
3. occurs when liquid goes to a gas. |
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| During a change of state, the ________________ of a substance changes. |
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| kinetic energy is the energy of ________________/ |
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| For most substances the distance between particles is smallest when the substace _________> |
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| you can cause water to change state by removing or adding..... |
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| Viscosity is a measure of a fluids |
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| _________________. fo NOT change shape in different contaners. |
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| the atoms and molecules in matter... |
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| are attracted to each other. move fast at high temperature. and are constantly moving |
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| __________________ is liquid changing to a gas that occurs throughout a liquid. |
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| ____________- is liquid changing to a gas that occurs throughout a liquid. |
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| Crystalline and amorphous solids are two catergories of ________________. |
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| Sublimation is the change of a solid directly into a |
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| The state in which matter takes theshpae of its container and has a definite volume is |
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| The state in which matter has a definite shape and volume is |
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| the state in which matter changes in both shape and volume is |
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| Matter in which particles are arranged in a repeating geometric pattern is called a ________________ solid. |
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| When two pure substances are combined so that each of the pure substances retains its own properties, the result is a(n)? |
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| How many atoms of calcium are in a unit of calcium phosphate whose formula is Ca3PO4? |
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| Made up of two or more similar atoms bonded together or of two or more different types of atoms bonded together is a ____________________. |
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| Made up of two or more elements chemically combined to form something new is a |
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| Made up of only one kind of atom that cannot be changed. |
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