Answer Key: Self-Test C-1.11
- A mixture is chemically combined molecules of different matter.
- false
- True or False. Calcium carbonate is classified as a compound.
- true
- True or false. All matter is made of elements.
- true
- Anything that occupies space and has mass can be classified as
- matter
- The number of different forms or states in which matter exists is
- C
- The ratio of an object’s mass to its volume is called the density of the object.
- A block of ice weighs 2,208 g and has a volume of 2,400 cm3. Find the density of the ice.
- 0.92 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]
- A piece of insulation has a density of 2 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]. It has a volume of 420 cm3. What is the mass of the insulation?
- 840 g
- A stone weighs 440 g. The density of the stone is 2,200 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]. What is the volume of the stone?
- 0.2 cm3
- Magnesium has a density of 174 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]. A bar of magnesium has a volume of 12 cm3. What is the mass of the magnesium bar?
- 2.088 kg
- A plywood plank measures [latex]1\text{ cm} \times 8\text{ cm} \times 90\text{ cm}[/latex] and weighs 396 g.
- What is the volume of the plank?
- 720 cm3
- What is the volume of the plank?
-
- What is the density of the plank?
- 0.55 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]
- What is the density of the plank?
- Copper is supplied in a rectangular block with dimensions of [latex]10\text{ cm} \times 8\text{ cm} \times 5\text{ cm}[/latex]. The density of the block is 8.9 [latex]\frac{\text{g}}{\text{cm}^3}[/latex]. What is the mass of the block?
- 3.56 kg
- The density of water is given as 62.4 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex] What is the weight of a 12-ft.3 volume of water?
- 748.8 lb.
- A block of solid copper weighs 119,880 lb. The density of copper is 555.0 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex]. What is the volume of the block of copper?
- 216 ft.3
- A container, [latex]4\text{ in.} \times 3\text{ in.} \text 7\text{ in.}[/latex], is filled with water. Given that the density of water is 0.0361 [latex]\frac{\text{lb.}}{\text{in.}^3}[/latex], what is the weight of the water in the container, to the nearest pound?
- 3 lb.
- Air has a density of 0.0807 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex]; butane has a density of 0.162 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex] How many times denser than air is butane?
- 2
- What would be the volume of 22 lb. of water, given its density of 62.4 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex]?
- 0.35 ft.3
- The density of porcelain is 2403 [latex]\frac{\text{kg}}{\text{m}^3}[/latex]. What would be the mass of 0.75 m3 of porcelain?
- 1,802.25 kg
- Three cubic feet of liquid propane weighs 95.47 lb. What is its density?
- 31.82 [latex]\frac{\text{lb.}}{\text{ft.}^3}[/latex]
- When an external force tries to stretch a body, the body is said to be under the stress of
- A
- A material that can be drawn into permanent wires is said to have high
- C
- The maximum force a solid can withstand without becoming permanently deformed is called its
- D
- Elasticity is the ability to
- B
- The attractive force between two dissimilar materials is known as
- adhesion
- The attractive force between two similar materials is known as
- cohesion
- What term is used to describe the ability of a material to transfer energy from one place to another?
- conductivity
- An insulation material with a high R-value would have a low thermal conductivity value.
- What term describes the forces that oppose the flow of electrical current in a conductor?
- resistance
- What is the unit used to measure the opposition to current flow in a conductor?
- ohm
