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suter [353]
3 years ago
10

Light comes from A. Nerve impulses. B. Electrons. C. An object vibrating. D. Photons

Chemistry
1 answer:
Radda [10]3 years ago
7 0
D. photons it contains light but with zero mass
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Why burning of fuel is a chemical change give 5 reasons to support your answer
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Answer:

Explanation:

1. New substances such as carbondioxide and water is formed.

2. There is evolution of gas bubbles. Gases are released.

3. There is either the absorption of energy or release of energy in form of light and energy.

4. The reaction is irreversible i.e it cannot be reversed, it is permanent once the reaction take place.

5. There is a change in both odor and smell.

A chemical change is a change where new substances are formed due to changes in the properties.

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Diamond is an allotrope of :
Marat540 [252]

Answer:

carbon

Explanation:

because it is an allotrope of carbon

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A molecule involves two atoms in a chemical bond that do what share?
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B. Share Electrons.
Hope this helps. 
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Which of the following statements correctly describes what happens in all chemical reactions?
azamat

Answer:

Bonds between atoms are broken/ or new bonds are formed

Explanation:

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2 years ago
Balance this chemical equation with an explanation please: CH3CH2OH + O2 = CO2 + H2O
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CH3CH2OH + 3O2 = 2CO2 + 3H2O

Basically you do trial and error on both sides so they can be equal
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