Name _____________________________ | ![]() |
Date ___________________ |
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Changes in Matter Complete the puzzle. | ![]() |
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conservation | chemical | reactivity | digestion |
heat | original | physical | combustibility |
reactants | energy | chemical change | same |
chemical changes | physical change |
down 1. The law of ____ of energy states that energy can never be destroyed or created. |
down 2. The ability of a substance to be a part of a chemical change. |
down 3. When ____ takes place in an animal many chemical changes occur. |
down 4. If matter has changed but you can change the matter back to its ____ form, then the change that took place was a physical change. |
down 5. The melting of an ice cube is an example of a ____ change. |
down 6. The ability of a substance to be burned. |
down 7. As a result of the law of conservation, during a chemical change the mass of the products is equal to the mass of the ____. |
down 8. If a change releases this, it is more than likely a chemical change. |
down 9. ____ take place in plants during the food-making process (photosynthesis) by which plants use light, water, and carbon dioxide and release oxygen. |
across 1. An old fruit that begins to go bad is an example of a ____ change. |
across 10. When a candle is lit, it undergoes a chemical change and as a result it releases both light and ____. |
across 11. A change in which new or different kinds of matter are formed. |
across 12. After a physical or chemical change, the total amount of matter is the ____ as it was before. |
across 13. The change in which no new kinds of matter are formed, but in which the size, shape, or state of the matter may change. |
Answer Key
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