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insens350 [35]
3 years ago
10

What is activation energy?

Chemistry
1 answer:
balu736 [363]3 years ago
8 0

Answer:

B

Explanation:

energy needed to get a reaction started

hope this helps. good luck :)

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Why do solids expand on heating?
sdas [7]

Explanation:

The molecules of solids are shrinked in there normal state . but as a heat energy is produced , the molecules starts curating fast and fast as temperature goes up . since they vibrate , they hit and collide each other breaking the bondings this increases the surface of area of the solid , and molecules consumes that space and they expand .

5 0
3 years ago
Pleasseee help!! Got STUCK FOR A WHILE!! How does this equation help you to understand acids and bases: H+(aq) + OH-(aq)H2O(aq)?
Gekata [30.6K]

Answer:

Odd answer choices, but I would put "It shows you that water is a reversible reaction, which contains hydrogen and hydroxide reactions."

Explanation:

The first choice is weird, although water can be written as HOH that doesn't help you understand acids and bases.

The third choice doesn't do that either, and there are more ways for water to be formed than that.

The second choice helps you understand acids and bases, specifically, in water's self-ionization process. It also shows you that it is neutral because it is formed from Hydrogen, which is usually present in acids, and a Hydroxide group, which is usually present in bases.

7 0
3 years ago
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devlian [24]

Answer:

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Explanation:

Heating will cause substances to expand, or change their state (like solid to liquid) or it may be a chemical reaction.

5 0
2 years ago
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Answer:

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