Lab: Experiment 1

Question 1

Describe:
Hydrate

Answer 1

A hydrated compound, has a specific number of water molecules associated with it, as part of the crystal structure

Question 2

Describe:
Anhydrous

Answer 2

Has no water molecules

Question 3

Define:
Density

Answer 3

The relationship between mass and volume

Question 4

Give the formula and units for density

Answer 4

Density = Mass/Volume

Usually measured in grams per milliliter (solids and liquids)
Usually measured in grams per liter (gas)

Question 5

What affects the density of a substance?

Answer 5

Temperature and pressure

Density of a solid or liquid may change significantly with temperature, but very little with pressure

Density of a gas varies greatly with both temperature and pressure

Question 6

Formula for mass percent of water removed from a hydrated salt

Answer 6

Mass of water removed / Initial mass of sample * 100

Question 7

Formula for mass of water removed

Answer 7

Initial mass of sample - Final mass of sample