elements and compounds

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6

• 8

• 2

• 4

Tags

NGSS.MS-PS1-1

 Which of the following atomic symbols is written correctly? 

• OH

• oH

• fe

• H

Tags

NGSS.MS-PS1-1

Can be found on the periodic table

• Element

• Compound

• MIxture

Tags

NGSS.5-PS1-3

What is water?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

When two or more elements chemically combine

• element

• compound

• mixture

• solution

Tags

NGSS.MS-PS1-1

Which item on this element square is the chemical symbol?

• Copper

• 29

• Cu

• 63.546

Tags

NGSS.MS-PS1-1

What element is found in all four areas of the earth that we studied?

• Sodium (Na)

• Oxygen (O)

• Carbon (C)

• Nitrogen (N)

Which of the following is not a compound?

• HCl

• Cl

• NaCl

• CO2

Tags

NGSS.MS-PS1-1

A pure substance containing only one kind of atom.

• element

• mixture

• compound

Tags

NGSS.MS-PS1-1

What is the picture displayed?

• atom

• element

• mixture

• compound