The color change that occurs when iron rusts is evidence of a(n)

The following reaction is considered to be what? Zn + 2HCl --- ZnCl + H

A reaction that combines simpler reactants to form a new compound is called a

Which statement reflects the law of conservation of mass?

In the chemical equation 2H2 + O2 -- 2H2O, what is 2H2 considered?

In the equation N2 + 3H2 -- 2NH3, the coefficient of the hydrogen reactant is

Most living things obtain energy through a process that is very similar to a combustion reaction. This process is called

The breakdown of water molecules (H2O) into hydrogen (H2) and oxygen (O2) molecules is an example of a

To balance a chemical equation, you can change

In the chemical equation 2H2 + O2 -- 2H2O, the arrow indicates

Which of the following best describes an endothermic reaction?

Which of the following best describes an exothermic reaction?

A mixture where you can see the different parts is called

A mixture where you cannot see the parts is called

C6H12O6 + 6O2 ---- 6CO2 + 6H2O + ATP is which equation

6CO2 + 6H2O +energy----- C6H12O6 + 6O2 is which equation

Is this equation balanced? CF4 + 2Br2 ---- CBr4 + 2F2

Is this equation balanced? N2 + H2 ---- NH3

Which of the following DOES NOT affect the rate of a chemical change

Baking bread is a ___________ change

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