Conservation of Matter 15?S8P1.F

Front

What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction. The total mass of reactants must equal the total mass of products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

In the reaction A + B -> C, if A is 5g and C is 9g, how much is B?

Back

4g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

If a reaction starts with 20g of reactants, what should be the total mass of products?

Back

20g

Tags

NGSS.MS-PS1-5

Front

Identify the reactants in the reaction: 2Mg + O2 -> 2MgO.

Back

Mg and O2

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

In the equation 3H2O, what does the coefficient 3 signify?

Back

It signifies that there are three molecules of water (H2O).

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Tags

NGSS.MS-PS1-1

Front

How do you calculate the total mass of products in a reaction?

Back

By adding the masses of all reactants together, which should equal the total mass of products.

Tags

NGSS.MS-PS1-5

Front

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

Back

The mass of reactants remains constant and is equal to the mass of the products.

Tags

NGSS.MS-PS1-5