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coldgirl [10]
2 years ago
10

When a cracker or bread dissolves in your mouth, is that a physical or chemical change?

Physics
2 answers:
BabaBlast [244]2 years ago
8 0
Physical because ur making dissolve
Anettt [7]2 years ago
3 0

Answer:

<u>Chemical change.</u>

Explanation:

The saliva or salivary amylase is a bio-catalyst...it causes chemical change during the dissolving process. Also, once the food is dissolved it can't be brought back to it's original state.

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7 0
3 years ago
If the index of refraction of a lens is 1.5, how fast does light travel in the lens?
Len [333]
The speed of light in a material is given by:
v= \frac{c}{n}
where
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The lens in this problem has a refractive index of n=1.50, therefore the speed of light in the lens is
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And the correct answer is C).
5 0
2 years ago
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koban [17]

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TRUE

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TRUE

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C) In a vacuum, electromagnetic radiation travels at the speed of light.

TRUE  

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4 0
3 years ago
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asambeis [7]
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EC_2 = 0

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7 0
2 years ago
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Lera25 [3.4K]

Answer:

not captured for use by living things

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3 0
2 years ago
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