Answer:
pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
Explanation:
Answer: Thats false the Russians were the first
Answer: physical
Explanation: freezing and melting are physical changes.
Decrease
Increase
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