Chem-CP Review

Measurements

100

2.20 g to mg

2,200 mg

200

820 cm —> m

8.2 m

300

0.000321

3.21x10^-4

400

2.98x10^7

29800000

500

3.0x10^8 m/s —> miles per hour

(1 mile = 1609.34 meters)

(1 hour = 3600 seconds)

6.71x10^8 mph

Atoms & Substances

100

This pure substance is made of only one type of atom and cannot be broken down by a chemical reaction 

Element

200

This type of matter can be physically separated, unlike a compound

Mixture

300

This type of mixture appears uniform throughout, even though it is still a mixture

Homogeneous

400

This type of substance forms when two or more elements chemically combine in fixed ratios

Compound

500

The ability to sample two different portions and get different compositions is a feature of this mixture

heterogeneous

Atomic Structure

100

The spin quantum number can only have one of these two values

+/- 1/2

200

What rule states that no two electrons in an atom can have this in common

PEP

300

Bohr explained spectral lines by stating that electrons emit or absorb energy when doing this

Energy level transitions

400

To determine a molecular formula you must compare the empirical formula mass to this quantity

Molar mass of compound

500

If the empirical molar mass is 30 g/mol and the molecular molar mass is 120 g/mol, what is the multiplier for the molecular formula

4