Chapter 1

Density is defined as mass _____________ volume. A) added to B) subtracted from C) multiplied by D) divided by

divided by

Which one of the following is NOT an example of a physical change? A) distilling water to remove impurities B) filtration of sand out of water C) mixing water and sugar D) electrolysis of water to form hydrogen and oxygen gas.

electrolysis of water to form hydrogen and oxygen gas

A gold bar is an example of a(n) A) Element B) Compound C) Mixture

element

Calcium is an example of a(n) A) element B) compound C) homogeneous mixture D) heterogeneous mixture

element

Which of the following metric prefixes corresponds to 10³? A) centi- B) kilo- C) mega- D) micro- E) milli-

kilo-

Which of the following lists metric prefixes in order from largest to smallest? A) kilo-, centi-, deci-, milli B) kilo-, deci-, centi-, milli- C) milli-, centi-, deci-, kilo- D) centi-, kilo-, milli-, deci- E) deci-, milli-, centi-, kilo-

kilo-, deci-, centi-, milli-

Which of the following is an extensive physical property of matter? A) Boiling point B) Reactivity C) Density D) Length E) Freezing point

length

Which of the following states of matter is portrayed by the following description: assumes the shape of its container because it has a definite volume but no specific shape? A) solid B) liquid C) gas

liquid

The following picture would be best described as

liquid mixture

Which of the following metric prefixes corresponds to 10⁻⁶? A) centi- B) kilo- C) mega- D) micro- E) milli-

micro-

A bar of soap is an example of a(n) A) Element B) Compound C) Mixture

mixture

Which of the following states of matter is pictured below?

solid

Gasoline is composed of a variety of different liquid hydrocarbons, which do not separate as time passes. Gasoline is an example of a: A) heterogeneous mixture B) Chemical compound C) Chemical element D) Solution

solution

A chemist has a block of copper metal (density is 8.96 g/mL). The block weighs 2.10 g. What is the volume of the copper block in mL?

0.234 mL

The answer to the calculation 67.2(45.67-44.98) with the correct number of significant figures is

46

The answer to the calculation 0.0180-0.0059/0.03168 with the correct number of significant figures is

0.382

A race car has a maximum speed of 0.104 km/s. What is this speed in miles per hour?

233 mph

The answer to the calculation 15.4+9.87+0.002 with the correct number of significant figures is

25.3

How many significant figures does the number 67,200 have?

3

A chemist has a block of aluminum metal (density is 2.7 g/mL). They drop the metal into a graduated cylinder containing water, and find the volume change is 1.1 mL. What is the mass of the block, in grams?

3g

The number 0.01060 has ___ significant figures.

4

How many significant figures does the number 0.054901 have?

5

You have a 100 gram sample of each of the following metals. Which sample has the smallest volume? A) Aluminum, d = 2.7 g/cm³ B) Gold, d = 19.3 g/cm³ C) Iron, d = 7.86 g/cm³ D) Magnesium, d = 1.74 g/cm³ E) Silver, d = 10.5 g/cm³

Gold, d = 19.3 g/cm³

Which of the following describes a chemical change involving water? A) H₂O(l) → H₂O(s) B) H₂O(s) → H₂O(g) C) H₂O(l) → H₂(g) + ½O₂(g) D) H₂O(g) → H₂O(l)

H₂O(l) → H₂(g) + ½O₂(g)

A white powder mixture is placed into water. Some of the powder sinks to the bottom of the container, some rises to the top. The separation of the powder mixture is an example of A) a chemical change B) a chemical reaction C) a physical change D) an extensive property

a physical change

Which of the following is an intensive physical property of a lump of coal? A) Width B) Flammability C) Chemical potential energy D) Mass E) Color

color

"Table salt" (sodium chloride) is an example of a(n) A) Element B) Compound C) Mixture

compound

Baking soda (sodium bicarbonate) is an example of a(n) A) Element B) Compound C) Mixture

compound

Which of the following is a pure substance that can be broken down into simpler substances by chemical means? A) element B) homogeneous mixture C) solution D) compound E) heterogeneous mixture

compound

Which of the following is a chemical change? A) cooking an egg B) mixing oil and water C) tearing a piece of paper D) watching a DVD

cooking an egg

Which of the following are physical properties of matter? A) stability B) reactivity C) density D) flammability

density

Why is the dissolving of salt in water a chemical change? A) the salt dissociates into ions B) the water gets saltier C) the water surrounds the salt compound D) the salt molecule does not dissociate into ions

the salt dissociates into ions

A cup of coffee contains 95.0 milligrams of caffeine. How many grams is this?

0.0950 g

Convert 34.0 mm to inches.

1.34 in

A full truckload of garbage has a mass of 26370 pounds. What is this mass in kilograms?

11960 kg

A city block is 0.161 km long. How many cm is this?

16100 cm

The number 4.0 × 10⁵ has ___ significant figures.

2

A patient is prescribed Tigan capsules for vomiting. The drug is available in the form of 3.0 × 10² mg Tigan/capsule, and is administered 4.0 doses/day of 1 capsule/dose. How many g Tigan does the patient receive in 2.0 days?

2.4 g

Which of the following numbers contains five significant figures? A) 50.260 B) 0.07246 C) 9935.10 D) 1000.01 E) 2.02470

50.260

Convert 0.587 L to milliliters.

587 mL

A fuel tank holds 22.3 gallons of gasoline. If the density of gasoline is 0.8206 g/mL, what is the mass in kilograms of gasoline in a full tank?

69.3 kg

Convert 28.4 in to centimeters.

72.1 cm

Convert 7.54 × 10⁻⁸ m to nanometers.

75.4 nm

Which of the following options correctly rounds 92.00579 to three significant figures? A) 92.006 B) 92.0 C) 92.00000 D) 93

92.0

Which of the following is an example of an extensive property of copper nugget? A) It is copper colored. B) It has a density of 8.96 g/cm³. C) It has a melting point of 1085 °C. D) It has a mass of 52.3 g.

It has a mass of 52.3 g.

Which of the following are chemical properties of matter? A) mass B) volume C) density D) flammability

flammability

The following picture would be best described as

gaseous compound

A human is an example of a(n) A) element B) compound C) homogeneous mixture D) heterogeneous mixture

heterogeneous mixture

Italian dressing contains olive oil and vinegar, which will separate out from each other if left to sit. This makes the dressing a: A) heterogeneous mixture B) Homogeneous mixture C) Both (A) and (B) D) None of the above

heterogeneous mixture