Physical Science chap. 22

D.) chemical compounds may be found in a chemical mixture

A chemical mixture is distinguished from a chemical compound in that

An alloy

Atoms or ions can be blended in any proportion within

C.) a suspension will separate into different phases when centrifuged

By what means can a solution and a suspension be distinguished?

C.) homogeneous mixture

Clean dry air is an example of a

Similar b/c they are both pure substances. They are different b/c element has one kind of atom while compound has multiple.

Compare element to compound

Same b/c they are both mixtures of two or more things. Different b/c homogeneous are evenly mixed. For example, Kool-Aid.

Compare homogenous mixture and heterogeneous mixture

Similar b/c they're both homogeneous mixtures. They're different b/c in a solution all of the parts are in the same places

Compare solution and suspension

Separated by distillation. Gasoline comes out, diesel comes out, chemicals come out.

Describe how crude oil is separated into multiple components

Stir mixture w/ a magnet, pour salt/sand into filter, run water through it because sand can't filter through. Boil water to get only salt.

Describe how you could separate a mixture of salt, sand, and iron fillings.

B.) a very large number

If you had one mole of marbles, how many would you have?

1. Filtration; separate based on particle size 2. Distillation; separate liquids based on boiling points 3. Centrifuge; separate according to density 4. Magnet

Name and describe 3 different separation techniques.

A.) d only

Of the four boxes (not pictured), which contain a chemical mixture?

D.) a, c, and d

Of the four boxes (not shown), which contains elements?

D.) b and d

Of the four boxes below (not pictured) which contains a chemical compound?

A.) a, b, and c

Pure material is found in boxes (not shown)

C.) it is a mixture of different elements

Steel is not listed in the periodic table because

D.) differences in chemical properties

The components of a mixture are most effeciently separated from one another based upon their

D.) volume and concentration of the solution

To calculate the amount of solute in a solution, we need to know the

C.) large amounts of solute are dissolved in solvent

When a solution is concentrated

C.) increases because material is being added to it

When sugar is dissolved in water, the volume of water

C.) d only

Which of the submicroscopic views in the boxes are most likely for a heterogenous mixture?

B.) it is a homogeneous mixture of chromium in aluminum oxide

Why is a ruby gemstone considered to be a solution?