1) Exploding Fireworks a) Chemical Change (Reaction) b) Physical Change 2) Crushing a Soda Can a) Chemical Change (Reaction) b) Physical Change 3) Baking a Cake a) Physical Change b) Chemical Change (Reaction) 4) Melting Ice a) Chemical Change (Reaction) b) Physical Change 5) Frying an Egg a) Physical Change b) Chemical Change (Reaction) 6) Burning Wood a) Physical Change b) Chemical Change (Reaction) 7) Breaking Glass a) Physical Change b) Chemical Change (Reaction) 8) Chopping Wood a) Physical Change b) Chemical Change (Reaction) 9) Using Batteries a) Physical Change b) Chemical Change (Reaction) 10) Crashing Cars a) Chemical Change (Reaction) b) Physical Change 11) Slicing Bread a) Chemical Change (Reaction) b) Physical Change 12) Rusting Chains a) Physical Change b) Chemical Change (Reaction) 13) Changes where the type of matter stays the same a) Physical Change b) Chemical Change (Reaction) 14) Changes the size, shape, or form of a substance a) Chemical Change (Reaction) b) Physical Change 15) Digesting food a) Chemical Change (Reaction) b) Physical Change 16) Cookie ingredients baking in the oven a) Chemical Change (Reaction) b) Physical Change 17) Cookie ingredients being mixed together a) Physical Change b) Chemical Change (Reaction) 18) Building a Burger a) Physical Change b) Chemical Change (Reaction) 19) Dissolving sugar in water a) Chemical Change (Reaction) b) Physical Change 20) Creates a new substance a) Physical Change b) Chemical Change (Reaction) 21) In a chemical reaction, what happens to the atoms involved? a) They remain exactly the same b) They change into different elements c) They disappear completely d) They form new arrangements and bonds 22) What is a chemical reaction? a) A change in the atomic nucleus b) A physical change in appearance c) A change in temperature only d) A transformation from one set of chemicals into another 23) Which of the following is an example of a chemical reaction? a) Baking a cake b) Ice melting c) Cutting paper d) Stretching a rubber band 24) In a balanced chemical equation, what must be true? a) The number of molecules must always be odd b) There must be more products than reactants c) The number of atoms on each side must be equal d) All reactions must involve oxygen 25) What is conserved (stays the same) in a chemical reaction? a) The shape of the container b) The total mass of all atoms involved c) The temperature of the reaction d) The color of the substances 26) What does the arrow (→) in a chemical equation represent? a) The direction the reaction proceeds b) The temperature of the reaction c) The cost of the chemicals d) The speed of the reaction 27) Burning a Candle a) Physical Change b) Chemical Change (Reaction) 28) In a chemical reaction, no new atoms are created or lost (conservation of mass) a) True b) False c) Usually true d) Usually false 29) If the starting and ending substances are the same, a ______________ change has occurred. a) Chemical b) Physical 30) In a ______________ change, the atoms maintain their same arrangement into molecules and compounds. a) Physical b) Chemical c) Both Chemical and Physical

Physical Change or Chemical Reaction

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