Chapter 2/3 Review

The ability to dissolve in water and conduct electricity are examples of:

• chemical changes
• chemical properties
• physical properties
• chemical bonding

Water is a(n)

• element
• homogeneous mixture
• heterogeneous mixture
• compound

New substances form when matter undergoes a...

• change in shape
• physical change
• change in temperature
• chemical change

A wet towel dries in the sun by the process of:

• boiling
• condensation
• evaporation
• sublimation

Which of the following describes a gas?

• The particles do not move.
• The particles are locked into place.
• The particles are free to move and independent.
• The particles slide past one another.

Which state of matter has both definite volume and shape?

• Solid
• Liquid
• Gas
• Plasma

As water vapor condenses back into liquid water, the relative motion of the water molecules...

• increases.
• decreases.
• stays the same.
• drops to zero.

A gas is at constant temperature.  You decrease the volume of the gas and the pressure increases.  What are the 2 variables in this lab?

• Temperature and time
• Time and volume
• Volume and pressure
• Pressure and temperature

Which of the pictures is a mixture?

• X
• Y
• Z
• W

Which of the pictures contains atoms of one type of element?

• A
• B
• C
• D