Science: Matter Study Guide

What is matter?

• A substance

• Anything that takes up space and has mass.

• Any type of energy such as heat, electricity, etc.

• Water in different forms.

Students are debating matter and non-matter. Which three students are correct?

• Sam- Sound is matter because the phone has mass.

• Donna- Light is not matter because it has no volume.

• Chris- Water is not matter because it doesn't have a definite shape.

Properties of matter can be observed and ___

• seen

• measured

• identified

• toxic

Students completed four investigations where they combined two different substances. Which investigation shows evidence that the chemical properties of the substance changed?

• Sand sinks in water when water and sand are combined.

• Salt dissolves in water when salt and water are combined.

• Bubbles form when baking soda and vinegar are combined.

• Vegetable oil coats the surface of lettuce when oil and lettuce are combined.

Substance R has a freezing point of 32 degrees Celsius and a boiling point of 100 degrees Celsius. If Substance R is current at 74 degree Celsius, what state of matter is this substance?

• solid

• liquid

• gas

Looking at the picture, what state of matter is this represtenting?

• solid

• liquid

• gas

The pictures show butter and water in solid states. The melting point of each substance is shown.

Students put solid butter and solid water on a table. The air temperature around the table is 20°C.

Which statement describes the most likely state of each substance after 2 hours?

• The butter and water will both remain solids.

• The butter and water will both become liquids.

• The butter will remain a solid, and the water will become a liquid.

• The butter will become a liquid, and the water will remain a solid.

What happened to the powder and sugar in the Kool Aid?

• They chemically reacted with the water, creating a new compound.

• They dissolved into the water, which is a physical change.

• They melted into the water, which is a physical change.

When the ice appeared to vanish, was this a chemical or physical change?

• physical

• chemical