.png){kind=logo}
Test Bank for Achieve for Interactive General Chemistry, 1e by Macmillan Learning (All Chapters) IGC_Chapter_1_Free_Response 1.What is the name and symbol for the SI unit of length?
ANSWER: meter, m
2.Give the symbol and numerical meaning for the prefix micro-.
ANSWER: μ, 10
6
3.How many significant digits are in the following value? 156.100
ANSWER: six
4.Solve the following problem and round the answer to the correct number of significant digits.
ANSWER: 0.010
5.The average life expectancy in the United States is 78.7 years. Given that there are 365.25 days in a year, exactly 24 hours in a day, exactly 60 minutes in an hour, and exactly 60 seconds in a minute, calculate the number of minutes that the average American lives.
ANSWER: 4.14 × 10
7 min 6.Standard-sized dice that are used in games and gambling are approximately cubic in shape and 16 mm in length on each side. Given that there are exactly 10 mm in 1 cm, calculate the volume of a die in units of cubic centimeters. Assume that the die is completely cubic in shape.
ANSWER: 4.1 cm
3 7.Cooking oil has a density of 0.92 g/mL. Calculate the mass of a teaspoon of cooking oil, which is equivalent to 4.93 mL.
ANSWER: 4.5 g
8.When added to water, octane will form a layer on the surface of the water. Iron will sink when added to water. Rank the densities of these substances from lowest to highest.
ANSWER: octane < water < iron
9.Helium's boiling point is 4.222 K. Calculate helium's boiling point in degrees Fahrenheit.
ANSWER: –452.07 °F 1 / 4
- The lowest recorded temperature on Earth was –89.2 °C at the Soviet Vostok Station in Antarctica in 1983.
Calculate this temperature in degrees Fahrenheit.
ANSWER: –128.6 °F
- Crater Lake in Oregon is approximately 9.7 km long and 8.0 km wide, and has an average depth of 350 m.
Assuming that the lake has the three-dimensional shape of a rectangular prism, calculate the volume of Crater Lake and round the answer to the correct number of significant figures.
ANSWER: 27 km
3
- The surface area of the Caspian Sea is approximately 1.4 × 10
5 square miles. Given that there are 1.609 km in one mile, calculate the surface area of the Caspian Sea in square meters and round the answer to the correct number of significant figures.
ANSWER: 3.6 × 10
11 m 2
- / 4
IGC_Chapter_1_Multiple_Choice
- Select the pure substance.
- air (a mixture of nitrogen and oxygen)
- seawater (water with dissolved salts)
- water (a compound of hydrogen and oxygen)
- brass (a mixture of copper and zinc)
ANSWER: c
- Which are considered pure substances?
- elements only
- compounds only
- elements and compounds
- elements, compounds, and homogeneous mixtures
- elements, compounds, homogeneous mixtures, and heterogeneous mixtures
ANSWER: c
- Select the true statement.
- All compounds are mixtures.
- Only elements are pure substances.
- Pure substances cannot consist of more than one type of element.
- A compound consists of two or more elements.
ANSWER: d
- Suppose you have two different brands of baking powder that are each uniform throughout. However, the
- element
- compound
- homogeneous mixture
- heterogeneous mixture
labels show that one brand has a higher sodium content than the other. Classify baking powder.
ANSWER: c
- In a cup, there is orange juice containing pulp and a few ice cubes. Which choice best describes the contents
- element
- compound
- homogeneous mixture
- heterogeneous mixture
of the cup?
ANSWER: d
- Select the chemical property.
- color
- melting point
- flammability 3 / 4
- density
- conductivity
ANSWER: c
- Select the extensive property.
- volume
- density
- color
- freezing point
ANSWER: a
- Select the chemical change.
- ice melting
- crushing an aluminum can
- breaking glass
- water condensing on a cool glass
- burning wood
ANSWER: e
- A sample of potassium explodes when dropped into a swimming pool. This property is
- extensive and physical.
- extensive and chemical.
- intensive and chemical.
- intensive and physical.
ANSWER: c
- Select the choice that is not an example of energy.
- a beam of light
- a loud noise
- an atom
- heat from a fire
- radiation from a microwave oven
ANSWER: c
- A log burns in a fireplace. Which choice best describes the energy conversion?
- Potential energy is converted to nuclear energy.
- Matter is converted to potential energy.
- Kinetic energy is converted to electrical energy.
- Nuclear energy is converted to heat energy.
- Chemical energy is converted to heat energy.
ANSWER: e
- Select the correct sequence of events in the scientific method.
- hypothesis → observation → experiment → theory → scientific law
- / 4
.png)