9a) Classify objects based on physical properties

What do groups of people and materials have in common?

• They both are made of metal.

• They both have common properties.

• They both have unique colors.

• They both are transparent.

What are the smallest units of a substance?

• Molecules and atoms

• Plants and animals

• Cells and tissues

• Water and air

What is an element?

• A type of metal

• The simplest form of a substance

• A substance that can be broken down

• A type of molecule

Which property was NOT used in the experiment?

• Transparency

• Magnetism

• Reflectivity

• Color

What did the experiment show about objects with similar properties?

• They are always transparent.

• They are always shiny.

• They are often made of similar substances.

• They are always magnetic.