Chemistry Unit 1 Review

Experimental Variables

100

The variable you change

Independent Variable

200

The variable you measure

Dependent Variable

300

The independent variable in an experiment to see if listening to Classical Music makes plant grow taller

Music (or no music)

400

What is controlled in an experiment to see if listening to music makes plants grow taller

soil, water, sunlight, soil conditions...etc

500

Why do we try to control the variables that are not the independent variable?

We don't want more than one change (cause) which could affect the dependent variable (effect)

Physical or Chemical properties and Change

100

The table top is black.

Chemical or Physical Property?

Physical Property

200

Is FLAMABLIITY a chemical or physical propery?

Chemical Property

300

Chopping up a log.

Physical or Chemical Change?

Physical Change

400

Is density a physical or chemical property?

Physical Property

500

Dissolving sugar in water.

Chemical or Physical Change

Physical Change

Scientific Notation in calculations

100

Convert 56,000.00 to scientific notation

5.6 x 10⁴

200

Convert 0.000425 to scientific notation

4.25 x 10^-4

300

(3.0 x 10³) + (3.0 x 10⁴) = ?

3.3 x 10⁴

400

Convert 2.25 x 10-3 to standard format

0.00225

500

(5 x 10³) x (3 x 10²) =?

1.5 x 10⁶ 

Sig Figs

100

How many Sig Figs?

0.01090

4

200

150

2

300

Round to the correct no. of Sig Figs

5.20 x 0.90 = 4.7

4.7

400

Round to the correct no of Sig Figs

3.5 + 2.75 = ?

6.3

500

Give the answer in the correct no. of Sig Figs and the correct units:

0.025 m/s x 55.125 s = ?

1.4 m

Misc Stuff???

100

Convert 1250.00 cm to m

12.5 m

200

Convert 25,000.00 cg to kg

0.25 kg

300

convert 67 deg F to deg C

19.4 deg C

400

Convert -10 deg C to Kelvin

263.15 K

500

What is speed limit on hwy 13 in m/s

24.6 m/s