Chem 105 SI :)

Prefix

100

kilo

10³

200

micro

10^-6

300

mega

10⁶

400

pico

10^-12

500

femto

10^-15

Ions

100

How many protons in Cl-?

17

200

How many electrons in Cd2+?

46

300

How many electrons in Pb4+?

78

400

How many protons in Ra3-?

88

500

Charge on Sulfate?

SO₄^2-

Answer: 2-

Conversion

100

Convert 50.7 L to kL

0.0507 kL

200

Convert 97,900 dm to m

9,790 m

300

Convert 46 inches to miles (there are 5280 feet in one mile).

0.000726 miles

400

Convert one million seconds to years.

0.032 years

500

Calculate how many moles of Ni are present in 25.0 grams of Ni (molar mass = 58.69 g/mol).

0.426 moles 

Periodic Table

100

Name the element: 

Na

Sodium (11)

200

Name the element:

Ba

Barium (56)

300

Name the element and its number on the periodic table:

C

Carbon (4)

400

Name the element and its number on the periodic table:

Li

Lithium (3)

500

Name the element and its number on the periodic table:

Al

Aluminum (13)

Sig Figs

100

How many sig figs in:

0.00

Zero

200

How many sig figs in:

956780

Five

300

How many sig figs in:

10.6790

Five

400

How many sig figs in:

1.076 x 10^12

Four

500

How many sig figs in:

0.000567

Seven