Matter and its Interactions - Review

Which type of change can be easily reversed?

• Chemical

• Physical

• Both

• Neither

If components are evenly distributed throughout a mixture, how would you describe it?

• Heterogeneous

• Homogeneous

Oxygen (O₂) is classified as:

• An element

• A mixture

• A compound

• A solution

What property tells how much matter is found in a substance?

• Volume

• Physical

• Mass

• Chemical

What is the formula for density?

• $D=\frac{M}{V}$

• $D=\frac{V}{M}$

• $M=\frac{D}{V}$

• $V=\frac{M}{D}$

When acetic acid comes into contact with sodium bicarbonate a gas is created. Why type of change is this?

• Physical

• Chemical

Water (H₂O) is classified as:

• An element

• A compound

• A mixture

• A solution

The transfer of thermal energy from one substance to another is also known as

• Physical change

• Chemical change

• Heat

Which part of an atom floats around the outer shell?

• Neutron

• Electron

• Proton

What property measures how closely together particles are packed into a substance?

• Density

• Mass

• Volume

• Freezing Point