Chemistry of Materials review 2023

Mineral oil is less dense than water. Mercury, a liquid metal, is more dense than water. If mineral oil, mercury, and water were mixed together, which liquid would float to the top?

• Mercury

• Mineral oil

• Water

• Both mercury and mineral oil would Float to the top.

If you place a solid in water, you can determine:

• If the solid is more or less dense than water.

• If the solid is more or less toxic than water.

• The Flammability of the solid.

• The mass of the solid.

• 20 g/cm³

• 10 g/cm³

• 5 g/cm³

• 0.2 g/cm³

What safety rules should you always follow while doing a science laboratory?

• Wear safety goggles at all times.

• no silliness or horseplay.

• Tell your teacher immediately if a spill occurs.

• All of the them.

Your teacher holds up a solid and informs you that this non-malleable solid is less dense than zinc. Based on this information, the solid could be:

• Zinc

• Nickel

• Carbon

• None of the above.

Which of the following is a chemical property of a substance? The substance ____________ .

• dissolves in water (solubility)

• reacts with hydrochloric acid

• bends easily (malleable)

• is more dense than water

Plastics are made from

• hydrogen and carbon compounds

• sand, soda ash, and limestone

• bauxite

• none of the above

Tags

NGSS.MS-PS1-3

Which of the following is NOT a property that can be used to identify a material?

• flexibility

• color

• shape

• density

Which of the following is a list of physical properties only?

• density, melting point, reaction with acid

• flexibility, reaction with acid, color

• flammability, color, density

• flexibility, color, density

You must identify an unknown substance using only the information shown in the table. Which one of the following tests could help you narrow down the identity of the substance?

• Placing the substance in water.

• Carefully bend the substance.

• Observing that the substance is a solid.

• Carefully smelling the substance.