Classification of Matter Concepts

What is matter?

• Anything that has mass and takes up space

• Anything that can be touched

• Anything that can be seen

• Anything that is alive

Which of the following is NOT considered matter?

• A plant

• Air

• Water

• Heat

What is a pure substance?

• A substance that changes its composition

• A substance that can be physically separated

• A substance made up of only one kind of particle

• A mixture of different elements

Which of the following is an example of a compound?

• Water (H2O)

• Iron (Fe)

• Gold (Au)

• Oxygen (O2)

In a compound, the ratio of elements is:

• Variable

• Fixed

• Non-existent

• Random

What distinguishes a mixture from a compound?

• Mixtures are chemically combined

• Mixtures have fixed ratios

• Mixtures are physically combined

• Mixtures are pure substances

Which of the following is a heterogeneous mixture?

• Salt water

• Vinegar

• Air

• Salad

What is a homogeneous mixture also known as?

• Element

• Solution

• Suspension

• Compound

Is a chocolate chip cookie a homogeneous or heterogeneous mixture?

• Homogeneous

• Heterogeneous

• Compound

• Pure substance

Which type of matter is represented by pure gold?

• Element

• Heterogeneous mixture

• Compound

• Homogeneous mixture