Law of Conservation of Matter/Mass

Front

Matter can never be __________ __________

Back

created nor destroyed

Front

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

Back

Subscript

Front

What is a Chemical Equation?

Back

A representation of a chemical reaction

Front

If Ms. Cookson adds 15 grams of M&M's, 10 grams of cashews, and 5 grams of Golden Grams cereal, how much does the mixture weigh?

Back

30 grams

Front

A chemical reaction is balanced when...

Back

Both sides have the same number of atoms

Front

What does the Law of Conservation of Matter state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

What is a Coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are present.

Front

What is the purpose of balancing a chemical equation?

Back

To ensure that the same number of each type of atom is present on both sides of the equation.

Front

What happens to the mass of reactants in a chemical reaction?

Back

The mass of the reactants equals the mass of the products.

Front

What is an example of a physical change?

Back

Melting ice is a physical change, as it does not alter the chemical composition.