Exploring the Physical Properties of Conductivity

What must be observed to determine the density of a substance?

• Temperature and pressure

• Mass and temperature

• Volume and temperature

• Mass and volume

Why is density considered a physical property?

• Because it involves chemical reactions

• Because it does not change the substance

• Because it alters the atomic structure

• Because it changes the substance

What is the scientific definition of conductivity?

• The ability to conduct heat and electricity

• The ability to change the atomic structure

• The ability to change the substance

• The ability to conduct sound

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Which type of conductivity is based on the freedom of electrons to move?

• Magnetic conductivity

• Sound conductivity

• Electrical conductivity

• Thermal conductivity

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Why is copper a great conductor of electricity?

• Because it has a complex crystal structure

• Because it has a lot of free electrons

• Because it is a non-metal

• Because it changes its atomic structure

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What happens to copper atoms when electricity is run through them?

• They become non-conductive

• They remain bonded the same way

• They change into a new substance

• They change their bonding

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What primarily affects thermal conductivity?

• The color of the substance

• The temperature of the environment

• The freedom of electrons and crystal structure

• The weight of the substance

How does the simplicity of a crystal structure affect thermal conductivity?

• Simpler structures conduct heat better

• It makes the substance non-conductive

• More complex structures conduct heat better

• It has no effect

Why is tungsten not as good a conductor of heat as copper?

• Because it has a simpler crystal structure

• Because it has a more complex crystal structure

• Because it has more free electrons

• Because it changes its atomic structure

Why is conductivity considered a physical property?

• Because it changes the substance

• Because it does not change the substance

• Because it involves chemical reactions

• Because it alters the atomic structure

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