1) a change in one or more physical properties of matter without any change in chemical properties. a) physical change b) chemical change c) thermal change d) electrical change 2) matter doesn’t change into a different substance in a __________ change. a) physical b) chemical 3) When matter undergoes physical change, it __________ become a different substance. a) doesn’t b) does 4) When liquid water freezes to form ice, it can be changed back to liquid water by heating and melting the ice. What type of change is this an example of? a) physcial change b) chemical change 5) A physical change in ____________ is a change in one or more of matter’s physical properties a) matter b) mass c) time d) temperature e) color 6) In a physical change, matter may change its ________, ________, or _________, but its chemical properties do not change. a) size b) shape c) state d) bubbles are released e) change of color f) an order is produced 7) Because the chemical properties of matter remain the same in a physical change, a physical change is often easy to ____________. a) reverse b) work on in a science lab c) remain the same d) locate 8) occurs whenever matter changes into an entirely different substance with different chemical properties. a) physical change b) thermal change c) chemical change d) electrical change 9) A chemical change is also called a chemical ____________. a) reaction b) production c) reproduction d) cause 10) Many complex chemical changes occur to produce the explosions of fireworks. a) true b) false 11) Methane is the main component of natural gas, which is burned in many home furnaces. During burning, methane combines with oxygen in the air to produce entirely different ______________ substances, including the gases carbon dioxide and water vapor. a) chemical b) physical 12) There are usually _________________ to look for to help you decided if a chemical change has occured. a) clues b) reasons c) groups d) examples 13) Another example of matter changing color is a penny changing from reddish brown to greenish brown as it becomes tarnished. The color change indicates that a new chemical substance has been produced. Copper on the surface of the penny has combined with oxygen in the air to produce a different substance called copper oxide. a) talking about a physical change b) talking about a chemical change 14) Because chemical changes produce new substances, they often __________ be undone. a) cannot b) can 15) you can’t change ashes from burning logs back into wood so this is a good example of what kind of change? a) physical change b) chemical change 16) chemical changesSome chemical changes can be reversed, but only by other __________________ a) chemical changes b) physical changes c) electronic changes d) buildable changes 17) To undo tarnish on copper pennies, you can place them in vinegar. The acid in the vinegar combines with the copper oxide of the tarnish. This changes the copper oxide back to copper and oxygen, making the pennies reddish brown again. a) Some chemical changes can be reversed, but only by other chemical changes. b) Some physical changes can be reversed, but only by other chemical changes. c) Some chemical changes can be reversed, but only by other physical changes. d) Some physical changes can be reversed, but only by other physical changes. 18) A _____________ occurs whenever matter changes into an entirely different substance with different chemical properties. Burning is an example a) chemical change b) physical change 19) Signs of chemical change include the ___________, ____________, ___________, ____________, and _________. a) release of bubbles b) a change of color c) production of an odor d) release of heat and light e) production of loud sounds f) change in size 20) Because chemical changes result in different substances, they often can be undone. a) true b) false 21) Some chemical changes can be reversed, but only by other chemical changes. a) true b) false 22) Matter exists in three different states.... a) solid b) liquid c) gas d) plastic e) gooey f) electric 23) The act that matter is not created or destroyed in any chemical or physical change is called the law of ________________ of mass. a) conservation b) conversation c) condensement d) carefullnes 24) The Law of Conservation of Mass is also called the _________________ because mass is a measurement of matter. a) Law of Conservation of Matter b) Law of Conservation of States c) Law of Conservation of Colors d) Law of Conservation of Size 25) In the 1700's, the French chemist ______________ measured mass both before and after a chemical change. a) Antoine Lavoisier b) Anthony Louviere c) Andrew Landry d) Antonio Lavver 26) Antoine Lavoisier's data showed that when he measured mass both before and after a chemical change, that matter is not created or destroyed in any chemical or physical change, This change is called the_______________   a) Law of Conservation b) Law of Newtons Force c) Law of Change d) Law of Gravity 27) A large bar of solid gold is melted into liquid. The liquid is then poured into molds to make a number of gold coins. Was this a chemical or physical change ? a) chemical change b) physical change 28) If you cut into an apple into slices and leave them in the open air, they will slowly turn brown what kind of chemical change is this a) Oxidation b) Purification c) Combustion d) Polution 29) any kind of change to matter involves what ? a) change in energy b) change of state c) change of temperature d) change of size 30) like matter, energy is conserved in a __________ a) chemical change b) physical change 31) created or destroyed it is only _________ a) transformed b) hot c) transferred to something d) loud 32) where is chemical energy stored in the chemical bonds between ________ a) atoms b) particles 33) Which of the following describes a physical change? a) A marshmallow burns over an open flame. b) A cat eats a piece of fish. c) Icicles melt from a rooftop. d) Milk turns sour. 34) Which of the following describes a chemical change? a) clear liquids mix, producing a cloudy liquid with yellow chunks b) silver coins are melted down and shaped into a solid brick c) salt is added to a pot of hot water, and the water’s boiling point changes d) an apple is chopped into eight slices 35) The law of conservation of mass states that a) matter is neither created nor destroyed. b) the mass of an object remains the same even if chemical change occurs. c) the number of molecules before and after a chemical reaction cannot change. d) mass is lost when a chemical change occurs.

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