Elements, Compounds and Molecules

Which of the following is not a compound?

• HCl

• Cl₂

• NaCl

• CO₂

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Name this compound: H₂O

• Water
• Carbon dioxide
• Hydrogen peroxide 
• Sulfuric acid

Tags

NGSS.MS-PS1-1

A molecule is

• two or more atoms bonded together
• one type of atom
• smaller than an atom 
• an element

Tags

NGSS.MS-PS1-1

How many Oxygen atoms are in H₂O?

• 1

• 2

• 0

• 4

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

(Element or Compound)
       C₂H₈O 

• Element
• Letters
• Numbers
• Compound

Tags

NGSS.MS-PS1-1

What is krypton?

• element
• compound
• mixture

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Can be found on the periodic table

• Element
• Compound
• MIxture