Physical Chemistry Review Quiz # 3

 

Is frying an egg a physical or chemical change?

• Chemical

• Physical

Which of the following is true?

• A physical property can only be seen.

• A physical property describes how matter can change when exposed to air.

• A physical property is something that can be observed about the substance by itself.

• A physical property can only be observed when two types of matter interact.

Which of the following are physical properties of the matter pictured?

Check all that are true

• reacts to oxygen

• malleable (bendable)

• Oxidized in air

• Tarnish with humidity

A chemical property describes how matter __________.

• smells

• reacts with another type of matte

• looks under a microscope

• dissolves when made into a solution

Jack leaves solid butter near a warm surface. When Jack returns, the butter has turned into a liquid. Jack's friend Elijah insists this is a chemical change. Is Elijah right?

• yes, because melted butter is a new type of matter

• no, because the butter didn’t have enough time to go through a chemical change

• yes, because the matter changed states

• no, because no new matter was formed

Is spoiling food a physical or chemical change?

• Physical

• Chemical

Is this an example of a physical or chemical change?

• Physical

• Chemical

Salt water, a mixture, is made by dissolving salt in water. Mixtures like this can be separated by using the physical properties of the mixture. Which would be the best way to separate a mixture made of salt and water?

• Evaporation

• Chromatography

• Magnetism

• Filtering

Use the basic properties of solids, liquids, and gases to identify the correct state of matter in the image.

• (A) gas, (B) liquid, (C) solid

• (A) solid, (B) liquid, (C) gas

• (A) liquid, (B) solid, (C) gas

• (A) solid, (B) gas, (C) liquid

What is physical change?

• How two chemicals react with one another when combined

• A property that we can measure or observe with our 5 senses or other tools

• When two chemicals react with one another to form a new substance

• When a change occurs but it does not result in the formation of a new substance