8th Unit 1 Bellringer 4

The diagram above shows four identical magnets that have been dipped into piles of shavings of four different metals. What can be concluded from the diagram above?

• All metals have magnetic properties.

• All metals are good conductors of electricity.

• Some metals have magnetic properties.

• Aluminum and copper are not metals.

The elements iron (Fe), copper (Cu), and mercury (Hg) are classified as metals. Which physical property of metals do they all share?

• They are all magnetic.

• They are all shiny, reddish color.

• They all have the same melting points.

• They all have thermal and electrical conductivity.

The table above shows some of the properties of samples of the elements zinc and iron. A scientist has a sample of metal that could be either iron (Fe) or Zinc (Zn). Which of the following properties could be tested to classify the metal sample?

• Electrical conductivity

• Reactivity with a strong acid

• Melting Point

• Volume

Which of the following characteristics is independent of sample size?

• Mass

• Density

• Heat content

• Volume

Thomas performed an experiment to measure the temperature of water as he heated it on a hotplate. At the end of his experiment, he plotted the results as shown in the graph above. Which of the following physical properties of water did Thomas measure?

• Solubility and electrical conductivity.

• Densities and physical states of matter.

• Volume and thermal conductivity.

• Melting point and boiling point.