Chem Stuff

Question 1

Filtration

Answer 1

Separation of liquids from solids (mechanical mixtures only)

Question 2

Distillation

Answer 2

• A liquid in liquid solution is heated, lowest boiling point boils first and is collected
• Liquid in solid may be distilled to collect the liquid.

Question 3

Evaporation

Answer 3

Solid in liquid solution, boiling away the liquid leaving the solid.

Question 4

Solvent Extraction:

Answer 4

• Extraction of solid from mechanical mixture (dissolve certain solids)
• Extraction of dissolved liquid or solid from a liquid solution (add solvent)

Question 5

Recrystallization

Answer 5

Solid in a liquid-solid solution is separated in a pure crystalline state.

Question 6

Gravity separation

Answer 6

Separates desired solids from a mechanical mixture based on their density

Question 7

Chromatography

Answer 7

Separate small amounts of solid in liquid solution containing 2 or more dissolved solids.

Question 8

What happens when solids melt into liquids?

Answer 8

• Allows molecules to break out of solid phase

- molecules possess increasing amounts of vibrational and translational energy

Question 9

When liquids boil into gas?

Answer 9

• Allows molecules to break out of the liquid phase

- Possess increasing amount of vibrational, rotational, and translational energy

Question 10

Endothermic

Answer 10

Getting hotter

Question 11

Exothermic

Answer 11

Getting colder.

Question 12

Avogadro’s Hypothesis?

Answer 12

Equal volume of 2 gases have equal number of molecules.

Question 13

Hand separation:

Answer 13

A mechanical mixture (solids)