2024-2025 Chemistry Fall Final Review

Approved eye protection devices, such as goggles, are worn in the laboratory

• any time chemicals, heat, or glassware are used.

• to avoid eye strain.

• to improve your vision.

• only if you don't have corrective glasses.

All chemicals in the lab are to be treated as if they're dangerous.

• true

• false

Lab work areas should be kept clean and tidy.

• True

• False

Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.

• True

• False

Students are allowed to enter the chemical preparation and storage area any time they need to get an item.

• True

• False

Never leave a lit burner unattended.

• True

• False

A pot of water is brought to a boil until all the water is changed to water vapor. Which of the following describes the changes in the water molecules? Select TWO correct answers.

• The molecules slow down.

• The molecules speed up.

• The molecules move closer together.

• The molecules move farther apart.

• The molecules remain at the same distance.

Tags

NGSS.HS-PS3-2

The following containers have the same number of molecules and temperature. Which container has the least collisions?

• Container 1

• Container 2

• Container 3

• Container 4

Tags

NGSS.HS-PS2-2

Complete the statement below about gas volume and the ideal gas laws. Move the answers to the correct boxes. The relationship between temperature and gas volume is known as ___ law. This law states that the volume of a mass of gas at a constant ___ varies directly with the temperature.

• Charles', pressure

• Avogadro's, moles

• Boyle's, volume

• Dalton's, pressure

The graph shows the pressure of an ideal gas compared to its volume. Between which TWO points does the pressure decrease most rapidly per unit of volume? Select the appropriate circles.

• 5.0 and 7.5 mL

• 7.5 and 10.0 mL

• 10.0 and 12.5 mL

• 12.5 and 15.0 mL

• 15.0 and 17.5 mL