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mel-nik [20]
3 years ago
7

natural rubber is white, but the one we see in cars is black, because it was combined with carbon. It is a physical or chemical

property?
Chemistry
1 answer:
AleksAgata [21]3 years ago
4 0

Answer: chemical property

Explanation: This is a chemical property because it was combined with carbon, another molecule acting like an element. The answer to the question is chemical property. Hope this helps!

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Friction is a force that opposes motion. When friction is present, heat is generated.
anyanavicka [17]

Answer:

I think it is: Some of the energy is converted into thermal energy.

Explanation:

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8 0
2 years ago
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Which of the following is true in regard to ions? A. A cation will hold a positive charge if it gains one or more electrons. B.
tigry1 [53]

Answer:

B. An ionized atom has a number of protons that is unequal to the number of electrons.

Explanation:

For a neutral atom , the number of proton and electron is equal. An ionized atom has either loss or gain electron, thereby making the number of proton and electron unequal. The answer B is true because an ionized atom has either loss or gain electron to make the number of electron and proton unequal.

Option A is incorrect because a cations holds a positive charge when it loss one or more electron not when it gains one or more electron(s). Anions possess negative charge for gaining electron(s).

Option C is not true because ions can also carry negative charges and they are called anions.

Option D is false because losing one or more electron will turn an atom to a cations.

7 0
3 years ago
50 POINTS PLEASE HELP!
rjkz [21]

A physical change has occured, Boiling water is a physical change not a chemical one, now if you're talking about the electric current, that had not changes either. it may rearrange the molecules, but it does not change the fundamental properties of the substance.

5 0
3 years ago
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lactic acid, which consists of C, H, and O, has long been thought to be responsible for muscle soreness following strenuous exer
Minchanka [31]

Answer:

C3H6O3

Explanation:

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3 0
3 years ago
E.) MO(NO2)3<br> What’s the name
astraxan [27]

Answer:

Molybdenum Nitrite

Explanation:

Mo => Molybdenum

NO2 => Nitrite

4 0
3 years ago
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