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Crazy boy [7]
2 years ago
11

Why does water appear blue?

Chemistry
2 answers:
Bumek [7]2 years ago
8 0
It doesn’t on in a pool because of the background of the pool and in the ocean it like that I guess because to the sun hitting it….for that to be honest I don’t know
Mariana [72]2 years ago
5 0

Answer:

Explanation:

Water is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.

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Answer: A) grinding coffee beans

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

1. Grinding coffee : Only change in size takes place, thus a physical change

2. Baking a cake: the chemical reaction occurs by combination of flour with oxygen , thus a chemical change.

3.:converting water to hydrogen and oxygen: The decomposition iof water takes place, thus is a chemical change

4.Burning of coal: the chemical reaction occurs by combination of carbon with oxygen , thus a chemical change.

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tall me is this what you looking for

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2 years ago
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MrRissso [65]

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Explanation: when particles bounce against each other the friction creates thermal energy. Think about what happens when you rub your hands together and they get warmer, that the friction between your hands making thermal energy.

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D. a and b because same-charged particles repel each other
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