Matter

Lance wants to separate out the salt from a solution of salt water. How can he do this?

• Boil the solution until the water evaporates
• Freeze the solution
• Filter the salt water through a strainer
• Use a magnet to attract the salt

What is the boiling point of water under normal pressure at sea level?

• 0℃
• 98.6℃
• 100℃
• 145℃

When peas, carrots, and corn are combined, they form

• a mixture.
• a solvent.
• a solution.
• a new substance.

Luke is using filtration to separate a mixture. What is he most likely trying to separate?

• Oil and vinegar
• Sand and water
• Paperclips and erasers
• Sugar and salt

What happens when the temperature of water changes from 10°C to -5°C?

• The water changes from a gas to a liquid.
• The water changes from a solid to a gas.
• The water changes from a liquid to a solid.
• The water changes from a liquid to a gas.

Which of the following is true about a gas?

• It has a definite shape.
• It has a definite volume.
• It has a definite shape and volume.
• None of the other answer choices

What happens when water vapor cools to below 100°C?

• It becomes a gas.
• It becomes a liquid.
• It freezes.
• It melts.

What happens to the particles of a substance when the boiling point for that substance is reached?

• Liquid particles change to a gas.
• Solid particles change to a liquid.
• Liquid particles begin to rise and sink.
• None of the other answer choices

Sabrina is mixing a solution and wants to make it more concentrated. What can she do to achieve this?

• Increase the amount of solvent in the solution.
• Increase the amount of solute in the solution.
• Increase the amounts of solvent and solute equally.
• Change the solvent to a different material, but keep the same solute.

Look at the picture of the blow-up toys in the pool. What states of matter are present in this scene?

• Solid and liquid
• Liquid and gas
• Solid, liquid, and gas
• None of the other answer choices