Identify each item as either an element or a compound. carbon (C) carbon dioxide (CO2) hydrogen (H) sodium chloride (NaCl)
2 answers:
Answer:
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
Carbon- element
Carbon dioxide- compound
Hydrogen- element
Sodium- element
Sodium chloride- compound
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