Help me with 15 16 17 and 18 please thank you so much

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asked Mar 1, 2017 213k views

2 Answers

Sphinxxx · Answer 1 · 2017-03-07T06:18:23+0000

15.c
16.the law of conservation of mass state that mass in a isolated system is niether created or destroyed.
17.you can prove that dissolving salt is a physical change by evaporating the water to separate the two.

Help me with 15 16 17 and 18 please thank you so much

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