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