Chemistry Unit 1 Review

Unit Conversion

100

Convert 340 g to kg

340 g = 0.340 kg

200

Convert 34 hL to L

34 hL = 3400 L

300

Convert 33 km to cm

33 km = 3300000 cm (5 zeros)

400

Convert 52 mL to L

52 mL = 0.052 L

500

Convert 33 dL to daL

30 dL = 0.33 daL

Sci Not w/ sig figs

100

4905 to scientific notation with proper sig figs

4905 = 4.905 * 10³

200

1.200 * 10⁴ to standard

12000

300

5.33 * 10^-3

0.00533

400

126.50 to scientific notation w/ proper sig figs

126.50 = 1.2650 * 10²

500

0.01502460

1.502460 * 10^-2

Sig Figs- Counting

100

50500

50500 has 3 sig figs

200

0.00021

0.00021 has 2 sig figs

300

0.000000005670

0.000000005670 has 4 sig fig

400

02.5120

02.5120 has 5 sig figs

500

7.68010 * 10^-2

7.68010 * 10^-2 has 6 sig figs

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 SI unit for mass?

kg

200

Accurate or Precise? Both or Neither?

Actual Volume of water in a graduated cylinder: 15mL

Readings (in mL):

15.1, 15.2, 14.9, 14.8, 15.0, 14.7

Accurate and Precise

300

Physical Change or Chemical Change?

Combing Baking Soda and Vinegar forms bubbles and heats up

Chemical

400

1.45 * 10⁴ cm to km

1.45 * 10⁴ cm = 0.145 km

500

Convert 50 km/hr to m/s

50 km/hr = 13.888889 m/s