Types of Chemical Reactions and Balancing Equations

Front

What must be true about the number of atoms in a chemical reaction?

Back

The number of atoms you begin with must be the same as the number of atoms you end with.

Front

Balance the following equation: ____ Fe + ____ Cl2 → ____ FeCl3

Back

2, 3, 2

Front

What do the red numbers in a chemical equation represent?

Back

Coefficients.

Front

What mathematical function do coefficients perform in a balanced equation?

Back

Multiplication.

Front

What is a common sign that a chemical change has occurred?

Back

A chemical has turned a different color, bubbled, and/or changed temperature.

Front

Define a chemical reaction.

Back

A process in which substances (reactants) are transformed into different substances (products).

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change.

Front

What are products in a chemical equation?

Back

Substances that are formed as a result of a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A number placed before a compound to indicate how many molecules are involved.