lab 2.1 Practice Flashcard: Properties

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent at a given temperature and pressure, usually expressed in grams of solute per 100 mL of solvent.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume, where mass is measured in grams and volume in milliliters.

Front

What does it mean if a substance is saturated?

Back

A saturated solution is one in which no more solute can dissolve at a given temperature, meaning it has reached its maximum solubility.

Front

How do you determine the volume of liquid in a graduated cylinder?

Back

Read the bottom of the meniscus at eye level to determine the volume of liquid in the graduated cylinder.

Front

What is the density of a liquid with a mass of 8.25 g and a volume of 9.0 mL?

Back

0.92 g/mL.

Front

If a substance has a solubility of 40g/100mL at 60 degrees C, how much more solute is needed to saturate a solution that already contains 25g?

Back

20g more is needed to reach saturation.

Front

What is the significance of comparing densities of two substances?

Back

Comparing densities helps determine which substance is heavier or lighter, which can indicate purity or composition.

Front

What is the unit of measurement for density?

Back

The unit of measurement for density is typically grams per milliliter (g/mL).

Front

What happens to the solubility of most solids as temperature increases?

Back

For most solids, solubility increases as temperature increases.

Front

What is the relationship between mass and volume in determining density?

Back

Density is directly related to mass and inversely related to volume; as mass increases, density increases if volume remains constant.