Molecules in Motion

Food coloring spreads out faster in hot water than in cold water. This is mainly because:

• The water molecules in hot water move more quickly
• The molecules in hot water are larger
• The food coloring molecules are small
• Hot water is less dense

Tags

NGSS.MS-PS1-4

If you put food coloring in room temperature water, the coloring spreads throughout the water. The water causes the color to spread mainly because:

• Water molecules are warm
• Water molecules are in motion
• Water is more dense than food coloring
• Food coloring molecules are small

Tags

NGSS.MS-PS2-2

Which of the following describes what happens as a substance changes state?

• the type of molecules change

• the mass of the molecules change

• the shape of the molecules change

• the attraction between molecules change

Tags

NGSS.MS-PS1-4

If you had a cup of soda with ice in it, which of the following explains the solid, liquid, and gas:

• the soda is the solid, the ice is the liquid, and the bubbles are the gas

• the ice is the solid, the bubbles are the liquid, and the soda is the gas

• the bubbles are the solids, the soda is the liquid, and the and the ice is the gas

• the ice is the solid, the cola is the liquid, and the bubbles are the gas

Tags

NGSS.MS-PS1-4

Which of the following describes one way that solids are different from liquids?

• Solids have weights and liquids do not

• solids take up space and liquids do not

• solids have a definite shape and liquids do not

• solids have a definite volume and liquids do not

Tags

NGSS.5-PS1-3

If your teacher opens a can of food in the front of the classroom, soon the room will smell like this food. Which statement identifies a property of a gas that allows all of the students to smell the food?

• a gas has no mass

• a gas has a large mass

• a gas takes the shape of the container

• a gas keeps its shape when places in a container

What happens when the temperature of water changes from 50 degrees to -50 degrees?

• the water changes from a solid into a gas

• the water changes from a liquid into a solid

• the water changes from a liquid into a gas

• the water changes from a solid into a liquid

Tags

NGSS.MS-PS1-4

What happens as water boils?

• the molecules are destroyed

• the mass of the molecules decreases

• the molecules become separated from each other

• the molecules break down into hydrogen and oxygen atoms

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As molecule or particle motion increases, the space between molecules

• decreases
• increases
• stays the same

Tags

NGSS.MS-PS1-4

Heating a substance___________ molecule motion. 

• increases
• does not affect
• decreases

Tags

NGSS.MS-PS1-4