What is an element?

• A pure substance that cannot be broken down into any other substance.

• A combination of many different elements that are not chemically combined.

• A pure substance made up of 2 or more elements that have chemically bonded together.

What is a compound?

• A pure substance that cannot be broken down into any other substance.

• A pure substance made up of 2 or more elements that have chemically bonded together.

• A combination of many different elements that are not chemically combined.

Tags

NGSS.MS-PS1-1

What is a mixture?

• A pure substance that cannot be broken down into any other substance.

• A pure substance made up of 2 or more elements that have chemically bonded together.

• A combination of many different elements that are not chemically combined and can be separated.

Fill in the blank: An element is represented on the periodic table by a _________.

• chemical symbol

• chemical equation

• atomic mass

• molecular formula

Fill in the blank: A compound is represented by a _________.

• chemical formula

• chemical symbol

• atomic number

• physical state

True or False: A mixture is a combination of many different elements that are chemically combined.

• True

• False

Which of the following is represented by only 1 capital letter?

• Element

• Compound

• Mixture

Which of the following can be separated by physical means?

• Element

• Compound

• Mixture

Which of the following models represents compounds?

• A. [Diagram with different shapes not connected]

• B. [Diagram with different shapes connected in pairs]

• C. [Diagram with same shapes connected in pairs]

• D. [Diagram with only triangles not connected]

Tags

NGSS.MS-PS1-1

Which of the following is an example of a chemical change?

• Cutting

• Burning

• Folding

• Freezing

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5