Identify each item as either an element or a compound. carbon (c) carbon dioxide (co2) hydrogen (h) sodium chloride (nacl)

Carbon-element

Carbon dioxide-compound

Hydrogen-Element

Sodium chloride-Compound

Explanation:

Element:It is a substance whose atoms all have the same number of protons.

It is chemically simplest substance and it can not be broken in smallest particle by chemical reactions.

Compound:It is  substance which  consist of two or more than two elements.

1.Carbon (C)

Using definition of element

Carbon is an element.

2.Carbon dioxide

Carbon dioxide is  a compound because it consist of carbon and oxygen .

3.Hydrogen

It is an element because it cannot be broken down in small particles by chemical reaction.

4.NaCl

It is a compound because it consist of sodium and  Cl -atom

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

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