When two or more substances are combined so each substance can be separated by physical means, the result is a(n)______________.

• chemical change

• element

• compound

• mixture

_____________ is a heterogeneous mixture.

• Salad

• Glue

• Brass

• Lemonade (no pulp)

Which of the following is a small particle that is the building block of matter?

• substance

• mixture

• atom

• molecule

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• soda

• water

• gold

• pizza

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• nickel

• water

• salad

• salt

Which of the following can be used to separate a heterogeneous mixture?

• your hands

• boiling

• evaporating

• you cannot separate a mixture

During science class, students combined 1 kg of iron filings with 1 kg of sand to create a mixture. Which of the following methods would be best for separating the iron filings from the sand?

• Stir the mixture into hot water to dissolve the sand.

• Strain the mixture through a paper filter to collect the sand.

• Drag a magnet through the mixture to attract the iron filings.

• Shake the mixture to cause the iron filings to settle to the bottom.

Which diagram shows an element?

• A

• B

• C

Tags

NGSS.MS-PS1-1

Which diagram shows a compound?

• A

• B

• C

Tags

NGSS.MS-PS1-1

Which diagram shows a mixture?

• A

• B

• C