Chemical and Physical Changes and The Code

Front

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

Back

Reactants

Front

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

Back

Products

Front

What is the little number after an element in a chemical equation called?
Example: H₂

Back

Subscript

Front

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

Back

Coefficient

Front

How many Al atoms are in this compound? 4Al₂O₃

Back

8

Front

What is a chemical equation?

Back

A written description of a chemical reaction.

Front

Number eight (8) is indicating ____ of the equation.

Back

gas

Front

When matter changes size, shape or state of matter it is called...

Back

a physical change

Front

When two or more different substances are mixed, a new substance with different properties may be formed.

Back

chemical change

Front

Ripping a piece of paper is an example of a

Back

Physical Change