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horsena [70]
3 years ago
12

What is a control group and is it always needed in an experiment?

Chemistry
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer:

yes, it is always needed

Explanation:

a control group is what you choose to control in an expirement its the amount of somthing you don't change

Hope this helped

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The reaction produces 2.93 g H₂.

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7 0
3 years ago
In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions)
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84.97

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