REVIEW CHEMISTRY FINAL PREP for Dec 2024

Front

What is a phase diagram?

Back

A graphical representation showing the phases of a substance at different temperatures and pressures.

Front

What occurs during evaporation?

Back

The process where a liquid turns into vapor when it gains enough energy.

Front

What is sublimation?

Back

The transition of a substance from solid to gas without passing through the liquid phase.

Front

What happens during condensation?

Back

The process where vapor turns into liquid as it loses energy.

Front

What is deposition in terms of phase changes?

Back

The process where gas turns directly into solid without becoming liquid.

Front

What indicates the presence of oxygen gas in a combustion reaction?

Back

A glowing wood splint reignites or burns brighter when placed in oxygen.

Front

What is emitted when an electron transitions from a higher to a lower energy level in an atom?

Back

Energy in the form of light, with the specific wavelength depending on the energy levels involved.

Front

What is the formula for diluting a concentrated solution?

Back

C1V1 = C2V2, where C is concentration and V is volume.

Front

How do you calculate the volume of a concentrated solution needed to make a diluted solution?

Back

Rearrange the dilution formula to find V1: V1 = (C2V2) / C1.

Front

What is the significance of the n=3 to n=2 transition in a hydrogen atom?

Back

It represents an electron moving to a lower energy level, emitting visible light.