2.9

Question 1

Heterogenous mixture

Answer 1

has one or more visible boundaries among the components. its composition is not uniform (varies from one region of the mixture to another)

Question 2

Homogenous mixture/solution

Answer 2

has no visible boundaries because components are individual atoms ions or molecules

composition is uniform

Question 3

what are the three ways mixtures differ from compounds?

Answer 3

1. proportions of mixtures components can vary
2. the individual properties of a mixture are observable
3. the components of a mixture can be separated by physical means

Question 4

Filtration and what its often used to separate

Answer 4

method of separating components of a mixture by particle size

often used to separate a solid from a liquid

Question 5

Crystallization

Answer 5

used to separate and purify components based on difference in solubility resulting in one component coming out of the solution as crystals

solubility of the substance is the amount that dissolves in a fixed volume of solvent at a given temp

Question 6

Distillation

Answer 6

more volatile component of mixture vaporizes and condenses separately from the less volatile components

votality= tendency of a substance to become gas

Question 7

Chromatography

Answer 7

mixture is dissolved in a gas or liquid and the components are separated as this solution mobile phase flows through the solid stationary phase

the component with the lower solubility in the stationary phase moves through it faster than a component with a higher solubility