Matter as mixtures

Multiple Choice

Which of the following is a reason why scientists study the process of mixing matter?

• To discover new materials

• To improve cooking recipes

• To understand weather patterns

• To create art projects

Multiple Choice

What is the difference between a chemical change and a physical change when mixing matter?

• A chemical change creates new materials, while a physical change does not change the molecules.

• A physical change creates new materials, while a chemical change does not.

• Both chemical and physical changes create new materials.

• Neither chemical nor physical changes create new materials.

Multiple Select

Which of the following pairs can be mixed together as a physical change?

• Solid + Solid

• Liquid + Solid

• Gas + Liquid

• Plasma + Solid

Multiple Choice

Why can the different pieces in a dried fruit mix be separated back out easily?

• Because it is a physical change and the molecules do not change.

• Because it is a chemical change and new materials are formed.

• Because the fruit pieces dissolve in each other.

• Because the mixture is a solution.

Multiple Choice

Which of the following best describes a suspension?

• A solid dissolves completely in a liquid

• A solid keeps its form in a liquid and can be separated out

• Two liquids mix and cannot be separated

• A chemical reaction occurs between a solid and a liquid

Multiple Choice

What would be left in a glass after salt water evaporates?

• Water

• Salt

• Sugar

• Pepper

Multiple Choice

When two liquids with very different densities are combined, what type of mixture is formed?

• Homogeneous mixture

• Suspension

• Emulsion

• Solution

Multiple Choice

Which of the following is a mixture of two liquids that is not homogeneous?

• Emulsion

• Solution

• Suspension

• Mixture

Open Ended

What are some different ways matter can be mixed?