Law of Conservation of Matter

Matter is anything that takes up space and has mass. All matter is made up of tiny particles called atoms.

• True

• False

Tags

NGSS.MS-PS1-1

Which of the follow is NOT an example of matter

• Ice

• Air

• Light

• Water

10. The law of conservation of mass states that, in a chemical reaction, matter is never created nor ____________.

• destroyed

• reused

• recycled

• repeated

Tags

NGSS.MS-PS1-5

A __________ change is when a chemical reaction takes place and at least one new product is made.

• reversible

• chemical

• physical

• product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...

• 250 grams

• 380 grams

• 375 grams

• 400 grams

Tags

NGSS.MS-PS1-5

Which of these is not a chemical reaction?

• Burning of wood
• Milk going bad
• Mixing vinegar and baking soda
• Melting of ice

Tags

NGSS.MS-PS1-2

If reaction starts with 20g of reactants it should produce 

• a total of 40g of products
• a total of 10g of products
• a total of 80 g of products
• a total of 20g of products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What do we call the chemicals that result from a chemical reaction?

• reactants

• products

• subscripts

• coefficients

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?

• The wood disappears.

• It stays the same chemically.

• The atoms in the wood and oxygen rearrange and form smoke and ash.

• Nothing.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

________ are the starting substances in a chemical equation.

• Reactants

• Producer

• Reaction

• Products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5