Matter Quiz 2

Select all the pure substances below (pick 2).

• element

• compound

• homogeneous

• mixture

A ________ is made up of different kinds of atoms chemically combined.

• element

• mixture

• compound

• molecule

Which of the following is the chemical formula for salt (sodium chloride)?

• H₂O

• NaCl

• HCl

• SaLt

Tags

NGSS.MS-PS1-1

What is an example of a mixture?

• Iron

• Soil

• ice

• gold

Which of the following is classified as a pure substance?

• Lemonade

• Fruit punch

• ketchup

• Helium

A water molecule is made up of one oxygen atom and two hydrogen atoms. Why is water considered a pure substance?

• Water can be broken down by physical means.

• Water can be combined with other substances by physical means.

• Each water molecule is identical.

• Water molecules are made up of different types of atoms.

Tags

NGSS.MS-PS1-1

When there is 2 or more atoms combined together

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

Water is known as a compound. Click on the images that are also known as compounds.

• Gold

• Carbon Dioxide

• Carbon

• Salt (Sodium Chloride)

Tags

NGSS.MS-PS1-1

True of False: Compounds are when two or more of the same elements are chemically combined.

• True

• False

What compound would be a great topic on a basket of fries?

• Salt

• Nitrogen

• Water

• Sweet relish