True or False. Chemical Reactions. Please solve them.
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Answer:
1) true
2) false
3) false
4) true
5) true
6) don't know
7) they change metals
8) false
9) true
10) false
11) true
12) don't know
13) false
14) false
15) don't know
16) false
17) true
18) true
19) true
20) false
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