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A(n) _________________ is used to balance chemical equations.
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
Which of the following is PROOF that a chemical reaction has taken place?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
Nitrogen dioxide is a covalent compound. How many oxygen atoms are in a nitrogen dioxide molecule?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
What charge does chlorine have?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
Which is the product in the chemical formula N + O2 yields NO2?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
How do substances form during a chemical reaction?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
Which of the following states the law of conservation of mass?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
In which kind of chemical reaction do two or more substances combine to form one new compound?
a new substance with different properties is formed
-1
Mass cannot be created or destroyed in a chemical reaction
coefficient
2
synthesis reaction
Chemical bonds break atoms rearrange and new chemical bonds form
NO2
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