Elements VS Compounds

Which of the following is not a compound?

• HCl

• Cl

• NaCl

• CO2

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O

• H₂

• NaCl

• CaCO₃

Tags

NGSS.MS-PS1-1

What cannot be broken down into other substances?

• Compound

• Mixture

• Solids

• Element

Tags

NGSS.MS-PS1-5

What is made up two or more elements that are chemically combined?

• Element

• Mixture

• Compound

• Solids

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols is written correctly?

• ee

• hE

• C

• CL

Tags

NGSS.MS-PS1-1

Which of the following chemical formulas represents a compound? 

• C₃

• O₂

• CH₃CHO

• H₂

Tags

NGSS.MS-PS1-1

Which statement best describes an element?

• made from mixture 

• thousands in the world

• pure, made of only one atom

• can be separated 

This picture represents which of the following?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1