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zhuklara [117]
3 years ago
10

I have asked this already!!!!!

Chemistry
1 answer:
stellarik [79]3 years ago
6 0

Answer:

01) Cu tting hair is a physical change. reason-1

02) Cooking can be either one, but I would choose chemical reason-3

03) Ice cream melting is a physical change reason-2

Explanation:

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3 years ago
Which mechanisms is most significant in returning the ion concentrations to the resting state?
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Active transport by the Na+-K+ pump

Explanation:

Active transport by the Na+-K+ pump

Maintenance (and restoration) of the resting ion concentrations depends on the Na+-K+ pump. Once gated ion channels are closed, the combined action of the pump and ion leakage (particularly that of K+) establishes a resting membrane potential in a typical neuron of around âˆ'70 mV.

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An amphoteric species is neither an acid nor a base. True or False
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Answer: False

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8 0
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7 0
3 years ago
A mineral that breaks into irregular pieces is said to show which of the following?
Ray Of Light [21]
The original options for this question were cleavage, luster and hardness. The answer would be cleavage.
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