Chapter 3 quiz Matter and Energy

If it takes 4958 joules to change a sample of ethanol from 20.5 °C to 59.0 °C, what is the mass of that ethanol sample in grams?

Convert 87.6 °C to °F.

When wood burns, it is converted to carbon dioxide and water and it releases heat to the surroundings. What kind of process is this?

• exothermic physical change

• exothermic chemical change

• endothermic chemical change

• endothermic physical change

Which of the following are physical properties? (select all that apply.)

• oxygen and gasoline react to form water and carbon dioxide

• silver tarnishes

• gasoline evaporates quickly

• iron rusts

• water boils at 100.0^oC

Which of the following are pure substances? (Select all that apply.)

• salt water

• nitrogen dioxide (NO₂)

• water

• sulfur

• blood

Which of the following statements is FALSE?

• a solid has a definite shape and a definite volume

• a gas has neither definite volume nor definite shape

• a liquid has a definite volume, but it has no definite shape

• the particles in a solid substance are not in motion

• both solids and liquids are not compressible, while gases are compressible

What happens at 0 degree celcius?

• water boils

• water freezes

• blood boils

• butter melts

What is energy?

• ability to change shape

• measurement of matter

• the ability to do work

• none of the above

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

To change a solid to a liquid, what do you add?

• heat
• water
• cold
• mass