Elements Compounds Mixture

A substance that cannot be broken down into any other substance by ordinarychemical means is called —

• molecule

• mixture

• element

• compound

Two or more physically combined substances form —

• a compoud

• an acid

• an element

• a mixture

What is an example of a mixture?

• Table salt

• Salt water

• Oxygen

• Air

Which of the following is a way in which elements and compounds are similar?

• Elements and compounds are pure substances.

• Elements and compounds are both made up of different kinds of atoms.

• Elements and compounds can both be broken down by physical means.

• Elements and compounds are listed on the periodic table.

What is an example of an element?

• Oxygen

• Pure water

• Air

• Table salt

Two or more substances in the same place but NOT chemically combined or in a specific ratio is called —

• compound 

• pure substance

• element

• mixture

Which of the following represents an element?

• H₂O

• H₂

• NaCl

• CaCO₃

Tags

NGSS.MS-PS1-1

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

• I

• II

• III

• IV

Beatriz wants to make a mixture out of her bowl of blueberries. Which of the following would turn her bowl of blueberries into a mixture?

• adding more blueberries to the bowl

• adding raspberries to the bowl

• cutting up the blueberries

• mashing the blueberries

This diagram represents a _____.

• pure substance that is a compound

• mixture of elements

• pure substance that is an element

• mixture of compounds

Tags

NGSS.MS-PS1-1