Counting Atoms Review

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Element or compound?
O₂

• Element
• Compound

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

Tags

NGSS.MS-PS1-1

The blue numbers in the image below represent ________

• I don't know, and don't want to try
• coefficients
• subscripts
• none of the answers are correct

Tags

NGSS.HS-PS1-7

How many valence electrons does Barium (Ba) have?

• 1
• 2
• 5
• 6

Tags

NGSS.MS-PS1-1

What is a valence electron?

• An electron in the outer most occupied energy level of an atom
• An electron that has properties similar to a transition metal
  
• Electrons with high reactivity
• Noble gases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

5CO_{2      
How many molecules are there?  How many elements?}

• 5 molecules, 2 elements
• 2 elements, 5 molecules
• 10 atoms, 5 elements
• 15 elements, 2 molecules

Tags

NGSS.MS-PS1-1