Chemistry Unit 1

All of the following are good conductors of heat except ____.

• copper

• aluminum

• wood

• silver

Of the following materials, which is the best conductor of heat?

• cotton

• aluminum foil

• air

• silicone

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Which park bench will feel colder in winter?

• metal bench

• wooden bench

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The ability of a metal to allow heat or electricity to pass through it.

• conductivity
• insulator
• mass
• density

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Gloves help keep your hands warm in winter because:

• They are conductors of heat.
• They are fuzzy.
• They are conductors of electrical energy.
• They are insulators.

Which form of energy causes water to boil?

• sound energy
• mechanical energy
• thermal energy
• light energy

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On a cold rainy day a baby is touching a cold window.  It feels so cold. Which way is the heat moving moving? 

• Cold is moving from the window to the hand.
• Heat is moving from the hand to the window.
• Heat doesn't move.
• It moves in currents

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Which ice cube will melt first?

• The large cube
• The small cube
• They will melt at the same rate

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Heat transfer occurs

• in many directions
• both from warm objects to colder ones and from cold objects to warmer ones.
• only from warm objects to colder ones.
• only from cold objects to warmer ones.

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A cup of tea with a temperature of 80 degrees Celsius is placed on a table in a 20 degree Celsius room.  What happens to the thermal energy and the molecular motion of the tea when it is left on the table?

• The thermal energy increases and the molecules move faster.
• The thermal energy decreases and molecules move more slowly.
• The thermal energy increases and the molecules move more slowly.

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