Matter and Measurement Review

Classification of Matter

100

Trail mix is an example of a _______________ type of mixture.

heterogeneous

200

Which of the following is a compound?

A. salt water

B. zinc

C. lead

D. baking soda

D. baking soda

300

Which of the following is not a chemical change?

A. rusting

B. igniting

C. melting

D. burning

C. melting

400

Which of the following is a homogeneous mixture?

A. blood

B. ground beef

C. the air trapped inside of a balloon

D. chocolate chip cookies

C. the air trapped inside of a balloon

500

Draw out the flow chart for the classification of matter. Include the following:

     element, compound, homogeneous, heterogeneous, pure substance, and mixture

                    Classification of Matter

          Pure Substance            Mixture

Element  Compound     Heterogeneous Homogeneous

Dimensional Analysis

100

Convert 17km to meters. Use the proper technique to calculate. 

17,000 meters

200

Convert 12 years to minutes. Use the proper technique to calculate. 

6,307,200 minutes

     significant figures = 6,300,000 minutes

300

Convert 15.9 mm to km. Be sure to set the problem up with the correct technique. Provide answer in scientific notation. 

1.59 x 10^-5 km

400

The volume of a balloon is 4.0 ft³. What is the volume of the same balloon in m³?

1 ft = 0.3048 m

0.11 m³

500

The fuel efficiency of a Hyundai Accent is 36 miles per gallon, calculate this in kilometers per liter. 

1609.34 meters = 1 miles

1 gallons = 3.79 liter

= 15.286

     correct significant figures    = 15 km / L

Significant Figures

100

How many significant figures are in the number 4,230?

3 significant figures

200

How many significant figures are in the number 0.000000020490?

5 significant figures

300

Answer the following with the proper number of significant figures:

(14.57) / (0.50) = ?

29 - multiplication and division - the lowest number of significant figures determines the number of significant figures.

400

Solve the following equation with the proper number of significant figures:

91.456 + 121.1 = ?

212.6 - addition and subtraction - the lowest place value determines the number of significant figures.

500

Calculate the following with the appropriate number of significant figures:

     (14.50 + 22.156) / 5.15 = ?

7.12

Scientific Notation

100

Convert the following number from standard form to scientific notation:

     6,000,000,000

6 x 10⁹

200

Convert the following number from standard form to scientific notation:

     0.000256

2.5 x 10^-4

300

Convert the following number from scientific notation to standard form:

     6.08 x 10^-5

0.0000608

400

Solve the following equation, answer with the correct number of significant figures:

(6.02 x 10²³) / (1.23 x 10¹⁰) = ?

4.89 x 10¹³

500

Calculate the following:

(6.02 x 10²³ + 5.4 x 10^-3) / (1.25 x 10¹⁵) = ?

481,600,000

     significant figures = 480,000,000

Percent Error & Density

100

A student uses a scale to measure the mass of a sample of NaCl, they record it as 18.3 grams. The actual mass of the salt is 20.0 grams. What is the percent error of the students measurement?

8.5%

200

The mass of an unknown sample was found to be 15.6 grams and the volume 32.2 milliliters. What is the density of the unknown sample?

0.484 g/mL

300

The volume of a sheet of aluminum foil is calculated to be 15 mL. The accepted density of aluminum is 2.7 g/mL. What is the mass of the sample of aluminum foil?

40.5 grams

400

A classroom conducted an experiment and found that the density of a small lump of iron was 8.011 g/mL. The accepted density of iron is 7.874 g/mL. What is the percent error of the experiment conducted?

1.74%

500

The density of carbon dioxide in air is 0.65 mg/L, what volume is occupied by 12g of carbon dioxide?

= 18461.54 L

     significant figures = 18,000 L