Liquid Mastery Check

Harper, Isla, and Mason were doing an experiment in their science class. They noticed that water drops stay together on a piece of wax paper and don’t break apart easily. According to their observations, this is mainly because:

• Water molecules are small

• Water molecules are in motion

• Water molecules are attracted to each other

• Water molecules are wet

Aiden and Sophia were playing with water balloons in their backyard. When Aiden's balloon burst, two drops of water were left on his hand. He noticed that when he brought these two drops near each other and allowed them to touch, they combined immediately and became one drop. Daniel, who was watching them, explained that this is mainly because:

• Water molecules are made of atoms

• Water molecules are attracted to each other

• Water molecules are magnetic

• Water is a liquid

Tags

NGSS.MS-PS2-5

Benjamin and James were conducting an experiment in their science class. They added food coloring to a glass of room temperature water and observed that the coloring spread throughout the water. According to their observation, 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

Avery noticed that when she added food coloring to her hot water, it spread out faster than when she added it to Henry's iced water. This is mainly because:

• The water molecules in hot tea move more quickly

• The molecules in hot tea are larger

• The food coloring molecules are small

• Hot tea is less dense

Tags

NGSS.MS-PS1-4

During a science experiment, Michael heated a thermometer and observed that the red liquid inside the thermometer moved up. Elijah asked why this happened. Mia explained that this is mainly because:

• The red liquid is thin

• The molecules of the liquid move faster and get a little further apart

• Hot liquid is lighter

• The glass of the thermometer gets hot

Tags

NGSS.MS-PS1-4

During a winter day, Noah, Evelyn, and Michael noticed that when they left a thermometer outside, the red liquid inside the thermometer moved down. This is mainly because:

• Cold liquids sink

• The glass of the thermometer gets cold

• The molecules of the liquid move slower and get a little closer together

• The red liquid is thick

Tags

NGSS.MS-PS1-4

Harper, Ethan, and Elijah are studying the properties of liquids. They are trying to describe how the particles in a glass of water behave. Which of the following statements could they use?

• The particles of the water in the glass are attracted to one another but don't move

• The particles of the water in the glass vibrate, are able to move past one another, and are attracted to one another

• The particles of the water in the glass are not attracted to one another and are very far apart from each other

• The particles of the water in the glass vibrate but don't move past one another

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Mia was conducting an experiment in her science class. She noticed that the molecules of the liquid inside the thermometer increased in speed when the thermometer was _______.

• heated

• cooled

• turned upside down

• frozen

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Arjun, Oliver, and Nora are conducting a science experiment in their science lab. They are observing what happens when they heat a beaker of water. What do they observe?

• the particles of the water get bigger

• the particles get closer together

• the total number of particles increases

• the space between the particles increases

Tags

NGSS.MS-PS1-4

Grace, William, and Henry were conducting an experiment in their science class. They cooled a glass of water and observed the changes. What happens to the kinetic energy of the water particles when they cooled it?

• the average kinetic energy increases

• the average kinetic energy decreases

• the average kinetic energy stays the same

• the kinetic energy changes into chemical energy

Tags

NGSS.MS-PS1-4