1. 14.1 Chemical Reactions
A chemical reaction is the process of breaking of
Atoms are
Chemical properties of new substances
When you make pizza, which changes are

2. Physical vs. Chemical Change
The process of making pizza involves some
The processes used by yeast in the dough or by the gas stove to bake the pizza are
Baking, burning, rusting, rotting, digestion are

3. Observations of a Chemical Change

4. Reactants and Products
In chemical reactions, we start with
The Reactants are the substances.
The Products are the substances which result from the chemical reaction.
Basic format of chemical equation:

5. Writing word equations and switching to chemical equations
When beryllium chloride reacts with sodium bromide, beryllium bromide and sodium chloride are formed.

6. Law of Conservation of Mass
The combined mass is any Burning wood and oxygen is converted into carbon dioxide and water.
1000g g g g