Test 1.2

Name:

Which of the following can cause water to change from solid to liquid?

• Time and temperature
• Time and volume
• Temperature and volume
• Weather and volume

An investigation was set up to explore what causes a solid to change into a liquid. Each lab group used four ice cubes in a sealable bag. Two groups taped the bags of ice cubes on a window where sunlight would shine through. The other two groups placed the bags inside a desk. Students then recorded their observations every half hour to determine what caused the change in state of matter. What is the variable within the experiment? (5.2A)

• Sealable bag
• Four ice cubes
• Sunlight
• Length of time observed

A student conducted an investigation to learn how materials conduct heat. The student placed a wooden spoon and a metal spoon in identical containers of hot water. Then, the Student took the temperature of the water in each container to make sure both were the same temperature. What is the variable in the student's investigation? (5.2A)

• The temperature of the water
• The type of container
• The length of time the student left the spoons in the water
• The type of spoon

Which of the following mixtures can be separated using a magnet?

• Sand and salt
• Sand and iron filings
• Sugar and water
• Saltwater

Which substance is NOT soluble in water?

• Powdered drink mix
• Sugar
• Salt
• Sand

Which of these materials would NOT be a good insulator of electricity?

• Metal
• Plastic
• Glass
• Wood

Which physical property is used to identify matter based on solubility?

• Ability to evaporate
• Volume
• Ability to dissolve
• Mass

A student was preparing an investigation / on mixtures using water, sand, and gravel. While stirring the mixture into the container of water, the sand and water mixture accidentally splashed into the student's eyes. What safety precaution should the student have followed? (5.1A)

• Wash hands before investigating.
• Wait for the other students before starting the investigation.
• Wear safety goggles.
• Use a spoon to stir the mixture.

Students taped a bag of ice cubes on a window in the classroom. After 20 minutes, students observed droplets of water forming on the outside of the bag. Which process caused the droplets of water to appear?

• Condensation
• Evaporation
• Precipitation
• Accumulation