Classification of Matter

What is an element?

• A type of animal

• A substance that cannot be broken down into simpler substances by chemical means.

• A form of energy

• A type of rock

Give an example of an element.

• Rock

• Oxygen

• Water

• Sun

What is a compound?

• A type of clothing

• A substance formed when two or more chemical elements are chemically bonded together

• A type of animal

• A type of music

Provide an example of a compound.

• Carbon dioxide (CO2)

• Nitrogen (N)

• Water (H2O)

• Oxygen (O)

What is a mixture?

• A mixture is not a real thing

• A combination of two or more substances that are not chemically combined

• A single substance with uniform composition

• A combination of two or more substances that are chemically combined

Give an example of a homogeneous mixture.

• Vegetable soup

• Saltwater

• Sand and water

• Iron filings and sulfur

Give an example of a heterogeneous mixture.

• Salt and water

• Vinegar and water

• Oil and water

• Sugar and water

What are the three states of matter?

• solid, liquid, and plasma

• solid, liquid, and gas

• round, square, and triangle

• hot, cold, and warm

Explain the concept of solid state of matter.

• Particles are closely packed together and have a variable shape and volume.

• Particles are loosely packed together and have a fixed shape and volume.

• Particles are closely packed together and have a fixed shape and volume.

• Particles are closely packed together and have a fixed volume but variable shape.

Describe the properties of gases.

• Gases have properties of expansion, compression, diffusion, and low density.

• Gases have properties of expansion, freezing, sublimation, and high density.

• Gases have properties of expansion, evaporation, condensation, and high density.

• Gases have properties of expansion, contraction, solid state, and high density.