Matter Unit Review

Front

In which of the following classifications would an iron nail and a copper wire be placed in different groups? Float in Water/Sink in Water, Magnetic/Nonmagnetic, Conducts Electricity/Does Not Conduct Electricity, Good Conductor of Heat/Poor Conductor of Heat

Back

Magnetic/Nonmagnetic

Front

Sugar is added to water and stirred until it completely dissolves. Which of the following correctly describes something that has happened to the sugar?

Back

The sugar is evenly distributed in the water.

Front

A student was asked to help pass out cups of hot chocolate to two other students. A teacher poured the steaming liquid into cups. Once cup was made of stainless steel and the other was made of thick plastic. As the student walked across the room, he suddenly put one of the cups on a desk and exclaimed "Ouch". Which cup did he put down and why?

Back

He put down the steel cup because it was conducting thermal energy from the liquid to his hand.

Front

Which technique could students use to separate aluminum and steel cans? Options: Put the cans in water, the steel cans will float. Crush the cans, the aluminum cans will be a different shape. Test the cans for their ability to conduct electricity. Use a magnet to find and remove the steel cans.

Back

Use a magnet to find and remove the steel cans.

Front

Which statement is true? Options: Oil is the most dense substance., Corn syrup is less dense than water., Oil is less dense than water., Oil and corn syrup have the same density but different masses.

Back

Oil is less dense than water.

Front

The boiling point of water is -

Back

100° C

Front

Which property would best separate a mixture of sand and iron filings? Options: density, electrical conductivity, melting point, magnetism

Back

magnetism

Front

Two objects are placed in water. One sinks and the other floats. Which conclusion can be drawn from this data?

Back

one object has a greater density than the other

Front

A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?

Back

the metal spoon conducted heat to the cook's hand

Front

If a box of crayons was left in a hot car which would not happen? Options: the crayons would change shape, the wax would become liquid, the paper wrappers would melt

Back

the paper wrappers would melt