How do bubbles support the atomic theory?

• The bubbles are lighter than air

• There is matter that cannot be seen inside the bubbles.

• The bubbles will burst before long.

• The bubbles cannot be broken into smaller pieces.

Tags

NGSS.MS-PS1-1

Based on the picture, which statement best compares the space taken up by the rock and the orange juice?

• The rock and the orange juice seem to fill about the same amount of space in the glass.

• The rock takes up less space because it is a solid and does not fill the glass completely.

• The orange juice takes up more space because it spreads out to fill the glass.

• The rock takes up more space because it is heavier than the orange juice.

Jackson has two jars. Jar A is filled with air, and Jar B is filled with water. Compare the volume of the air in jar A with the volume of the water in jar B. Which statement is supported by the evidence shown?

• If the lids are removed, the volume of the air in Jar A will change, but the volume of water in Jar B will not change.

• If lids are removed, the volume of air in Jar A will not change, but the volume of water in Jar B will change.

• The volume of the air in Jar A is less than the volume of water in Jar B.

• The volume of the air in Jar A is greater than the volume of water in Jar B.

Tags

NGSS.MS-PS1-2

Why do wet clothes dry even when the temperature is not high enough to boil water?

• The sun melts the water into the air.

• Water molecules at the surface escape into the air after gaining enough energy.

• The wind freezes the water, making it disappear.

• Clothes absorb the water and turn it into a solid.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Look at the science supplies. Which set of tools would be most effective for separating a mixture of iron filings, marbles, salt, and water?

• hand lens, hammer, and beakers

• magnet, strainer, and evaporating dish

• filter, beakers, and hand lens

• strainer, hammer, and funnel

A gas

• does not have a definite volume.

• does not have a definite shape.

• fills its container.

• all of the above.

Which of the following is correct about molecules?

• Molecules are made of atoms joined together.

• Molecules are the smallest unit of an element.

• Molecules cannot be broken down into atoms.

• Molecules contain only one type of atom.

Tags

NGSS.MS-PS1-1

Kai is conducting an experiment to see how quickly a chemical reaction happens. What can Kai change to affect the rate of the chemical change?

• color

• texture

• temperature

• gas bubbles

Tags

NGSS.MS-PS1-2

Which arrow points to the protons?

Tags

NGSS.MS-PS1-1

Label this atom's particles.

a

b

c

d

Nucleus

Protons

Electrons

Neutrons

Tags

NGSS.MS-PS1-1