Law of Conservation of Mass

Front

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

Back

380 grams

Front

Matter can not be created nor destroyed: it can only be

Back

Transformed, changed

Tags

NGSS.MS-PS1-5

Front

If reaction starts with 20g of reactants, what is the total mass of products produced?

Back

a total of 20g of products

Tags

NGSS.MS-PS1-5

Front

What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?

Back

They both will weigh the same

Tags

NGSS.MS-PS1-5

Front

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

Back

products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are the starting substances in a chemical equation?

Back

Reactants

Tags

NGSS.MS-PS1-5

Front

The law of conservation of mass states that

Back

the mass of a chemical reaction remains constant

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Copper (Cu) and sulfur (S) were heated in a covered container. After the reaction was complete, the unreacted sulfur was removed. How much sulfur in grams failed to react with the copper? Options: 1.32 g, 4.54 g, 5.02 g, 10.88 g

Back

1.32 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How many of each substance are present after the coefficient has been added in 3Pb(SO₄)₂? Options: 3 Pb and 3 SO₄, 3 Pb and 6 SO₄, 6 Pb and 24 SO₄, 6 Pb and 6 SO₄

Back

3 Pb and 6 SO₄

Tags

NGSS.MS-PS1-1

Front

Which of the following equations is balanced?
Options: Equation (a), Equation (b), Equation (c), Equation (d)

Back

Equation (d)

Tags

NGSS.MS-PS1-5