Science Flashcard

Front

What is the chemical formula for Sodium Acetate?

Back

C₂H₃NaO₂

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

A change in matter that doesn’t make a new substance, like cutting paper or melting ice is a _________ change.

Back

Physical

Front

What is a subscript in a chemical formula?

Back

A small number written below and to the right of a chemical symbol.

Front

What is the chemical formula for water?

Back

H₂O

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is a molecule?

Back

Two or more atoms bonded together.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is the pH scale used for?

Back

To measure how acidic or basic a solution is.