Chemistry, 18.02.2021 03:00 vieraml58

Do only chemical reactions get colder/hotter? What is happening when potassium chloride dissolves?
• What do we think is happening when we put potassium chloride in
water? Is it dissolving?
What does dissolving even mean?
Is this phenomenon similar to or different from the chemical reactions
we have already seen?
• Is this a physical change or a chemical reaction? What evidence would
we need to collect to be able to know if it was one or the other?

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