Which of the following is an example of a physical change in matter?
2 answers:
Answer is B.
Explanation:
A physical change is one in which there is no change in chemical composition of a substance. while a process in which there is change in chemical composition it is called a chemical change.
b. bending of sodium metal because it is still sodium metal just bent
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Answer:
9 days, or 3 half-lives
Explanation:
5.2x10^5=520000
6.5x10^4=65000
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I'm not the greatest at Chem but this seems more like math than Chem :)
