Write TRUE or FALSE.
17.______When a piece of paper is burned it loses its original properties.
18.______Physical change ocurrs when oxygen is used up in burning stick.
19.______Fire goes out in a lighted candle when there is no oxygen.
20._____Oxygen combines with the materials inside the body and undergoes a chemical change
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17.______When a piece of paper is burned it loses its original properties.
18.______Physical change ocurrs when oxygen is used up in burning stick.
19.______Fire goes out in a lighted candle when there is no oxygen.
20._____Oxygen combines with the materials inside the body and undergoes a chemical change
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Answer:
17. True
18. False
19. True
20. True
Explanation:
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