Chemical Reactions

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In a chemical reaction, the starting substances on the left side of the equation is called

In a chemical reaction, the ending substances on the right side of the equation is called

Rust is a combination of what two elements

When a chemical reaction gives off heat after the reaction occurs, it is called

When substances undergo chemical changes, a chemical reaction occurs and new substances are formed.

An example of a physical change is

Which of the following is a chemical reaction?

What coefficent can be added to this equation to balance it? 3. N2 + __H2 -----------→ 2NH3