Conservation of Mass

What is the Law of Conservation of Mass?

• Mass is created in a chemical reaction

• Mass is created in a physical change

• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants

• Mass is never created or destroyed

Tags

NGSS.MS-PS1-5

In reaction A +B --> C, reactants A + B have a total mass of 9g. What is the mass of product C?

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

In reaction A +B --> C, reactant A has a mass of 4g and product C has a mass of 9g. What is the mass of reactant B

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

In reaction A +B --> C, reactant B has a mass of 9g and product C has a mass of 14g. What is the mass of reactant A?

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

24 g of magnesium reacts with 38 g of fluorine to produce ______ g of magnesium fluoride

• 14

• 24

• 38

• 62

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

7 g of hydrogen reacts with 17 g of oxygen to produce ______ g of water

• 14

• 24

• 38

• 62

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

12.67 g of Carbon reacts with 25.33 g of oxygen to produce ______ g of Carbon Dioxide

• 14

• 24

• 38

• 62

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

• 2

• 3

• 4

• 8

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

• 2

• 3

• 4

• 8

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

During a chemical reaction matter cannot be created or destroyed.

• True

• False

Tags

NGSS.MS-PS1-5