Chemistry Unit 1 Review

Unit Conversion

100

Convert 340 g to kg

340 g = 0.340 kg

200

Convert 33 DL to dL

3300 dL

300

convert 523.4 Hg to dg

523400 dg

400

2.56 x 10¹⁸ cm to km

2.56 x 10¹³ km

500

0.0008097 mL to DL

0.00000008097 DL

Sci Not

100

4905 to scientific notation with proper sig figs

4905 = 4.905 * 10³

200

1.200 * 10⁴ to standard

12000

300

5.5 x 10^-3  /  5.000 x 10^-8

1.1 x 10⁵

400

1.2650 * 10²  +  1.23 x 10⁰

1.2773 x 10²

500

150,000,000 + 1.5 x 10⁸ - 2.9 x 10⁸

1 x 10⁷

Sig Figs- Counting

100

50500

50500 has 3 sig figs

200

0.00021

0.00021 has 2 sig figs

300

0.005670 x 2.5

0.014175 but can only keep 2 sig figs

0.014 is the answer. 

400

1.245 + 10 + 0.0025356

11.2475356 but only precise to the tens place.

11 is the answer

500

7.68010 * 10^-2  /  2.03 x 10^-1

3.783300493 x 10^-1

but only get to keep 3 sig figs

3.78 x 10^-1

Sig Figs- Rounding

100

Round 25123 to two sig figs

25000

200

Round 0.0112191 to 4 sig figs

0.0112191 to 4 sig figs -> 0.01122

300

Round 3,311,945 to 4 sig figs

3,311,945 to 4 sig figs -> 3,312,000

400

Round 0.00758830 to 3 sig figs

0.00758830 to 3 sig figs -> 0.00759

500

Round 5.010 * 10⁶ to 1 sig fig

5.0100 * 10⁶ to 1 sig fig -> 5 * 10⁶

Random

100

What is the order of the colors of the rainbow ?

ROYGBIV

200

How many dozens are in 288 eggs

20

300

How many yards are in a mile if a mile is 5280 feet and a yard is 3 feet?

1760 yards in a mile.

400

Johnny has 4000 ounces of fools gold and thinks he has struck it rich. how many pounds of the useless mineral does he have if a pound is 16 ounces?

250 pounds

500

Johnny thinks he has struck it rich and has way too much pykrete. If pykrete is $0.02 per pound and he has 400,000 pounds how much is his amount worth?

$8,000