Unit 1

Lab Equipment & Safety

100

When do we use goggles in the lab?

anytime heat, chemicals, or glassware are in use

200

What 2 things should you do every time you finish a lab?

clean your glassware/station & wash your hands

300

What piece of lab equipment accurately measures liquids?

graduated cylinder

400

What piece of lab equipment is used to heat solids? (made of porcelain)

crucible

500

What color should you flame be when using the Bunsen Burner and why?

blue, hotter & cleaner

Scientific Method & % Error

100

Julia wanted to know which brand of soda goes flat faster.  She opened 12 ounce cans of Coke, Sprite, and Root Beer and recorded the mass of the cans every hour.  What is the independent variable?

type (or brand) of soda

200

Julia wanted to know which brand of soda goes flat faster.  She opened 12 ounce cans of Coke, Sprite, and Root Beer and recorded the mass of the cans every hour.  What is the dependent variable?

mass of cans

300

Julia wanted to know which brand of soda goes flat faster.  She opened 12 ounce cans of Coke, Sprite, and Root Beer and recorded the mass of the cans every hour. List 2 constants.

size of can, time of recording

400

Julia wanted to know which brand of soda goes flat faster.  She opened 12 ounce cans of Coke, Sprite, and Root Beer and recorded the mass of the cans every hour.  What is the control?

mass of can before opening

500

The density of ethanol is 0.79 g/mL. A student performs an experiment to find the density of ethanol and records 0.58 g/mL in her data table. What is her % error?

27%

Metric Conversions

100

Convert 53.6 g to mg

53,600 mg

200

What is the SI base unit for energy? Give the full name and the abbreviation.

Joules (J)

300

Convert 4000 nm to cm.

0.0004 cm

400

If you were converting 0.005 TL to mL, how many zeros would you put after the decimal?

12

500

Convert 856.2 pL to TL. Round your answer to 2 s.f. and write your answer in scientific notation.

8.6 x 10^-22

Scientific Notation & Significant Figures

100

How many sig figs are in 0.0020020?

5

200

Round 12590 to 2 sig figs.

13,000 or 1.3 x 10⁴

300

Put 0.000531 into scientific notation

5.31 x 10^-4

400

Report the answer in scientific notation & with correct sig figs:

9010 x 4200

3.8 x 10⁷

500

Report the answer with correct sig figs:

85.920 + 4.5 + 8 = 

98

Dimensional Analysis

100

Convert 9610 seconds into minutes.

160.

200

Convert 3.35 feet into centimeters. (2.54 cm = 1 in)

102

300

Convert 120 ounces into kilograms. (1 oz = 28.3 g)

3.4

400

If it takes 7 minutes to run 1 mile, how many minutes would it take to run 2000 feet? (5280 ft = 1 mi)

3

500

Convert 25.0 miles/hr to ft/sec. (5280 ft = 1 mile)

36.7