Quiz on Compounds and Mixtures

What is a compound?

• A solution of a solid in a liquid

• A mixture of two or more substances

• A pure substance made of two or more elements chemically bonded

• A heterogeneous mixture

Which of the following is a characteristic of mixtures?

• They are always homogeneous

• They are chemically bonded

• They have a fixed composition

• They can be separated by physical methods

What is an example of a pure substance?

• Sand

• Air

• Table salt

• Seawater

What type of mixture is uniform throughout?

• Homogeneous mixture

• Heterogeneous mixture

• Element

• Compound

What is the solute in a solution?

• The mixture of two liquids

• The solid that dissolves

• The gas that dissolves

• The liquid that dissolves

Which of the following is a property of compounds?

• They have a fixed composition

• They have properties similar to their constituent elements

• They can be separated by physical methods

• They are always mixtures

What happens to the properties of substances in a mixture?

• They change completely

• They remain the same

• They become more complex

• They disappear

Which of the following is a characteristic of a solution?

• It can be separated by filtration

• It contains only one substance

• It is a homogeneous mixture

• It is always a solid

What is the term for a mixture that is not uniform throughout?

• Compound

• Homogeneous mixture

• Solution

• Heterogeneous mixture

How does temperature affect the solubility of a substance?

• It makes substances insoluble

• It increases solubility

• It has no effect

• It decreases solubility