Conservation of Matter

Sarah and Jake were each given a ball of clay that has a mass of 400 grams. Both students used all their clay to make an object. Sarah rolled hers into a ball, and Jake made a long, skinny rope. What is the mass of the clay figures now?

• Sarah's weighs more because it is round

• Jake's weighs more because it is long

• There is no way of knowing

• They figures would have equal masses.

Matter must have weight and _________.

• be visible

• take up space

• be a solid

• all of these

What evidence was found for conservation of matter in the fire snake demo?

• looked the same before and after

• about the same weight before and after

• smelled the same before and after

• matter was not conserved

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Matter must have weight and _________.

• be visible

• take up space

• be a solid

• all of these

Tags

NGSS.5-PS1-2

NGSS.5-PS1-3

The fire snake weighed slightly less after it burned. Where did that matter go?

• disappeared

• burned up

• escaped as gas

• soaked into sand

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why does the weight of the dry ice go down while it's sitting on the scale?

• it's melting

• it's disappearing

• turning into a gas

• none of these

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

As the balloon collects gas, what happens to the weight reading on the scale?

• increases

• decreases

• stays the same

• goes to zero

Tags

NGSS.MS-PS1-5

Which of the following best describes the Law of Conservation of Matter?

• Matter can be created and destroyed.

• Matter can change forms but is neither created nor destroyed.

• Matter is always conserved in chemical reactions but not in physical changes.

• Matter is only conserved in closed systems.

Tags

NGSS.MS-PS1-5

In a closed system, a chemical reaction occurs where 10 grams of reactant A reacts with 15 grams of reactant B. What is the total mass of the products?

• 10 grams

• 15 grams

• 25 grams

• 30 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During a laboratory experiment, a student dissolves 5 grams of salt in 100 grams of water. What is the total mass of the saltwater solution?

• 95 grams

• 100 grams

• 105 grams

• 110 grams

Tags

NGSS.MS-PS1-5