Counting Atoms

Counting Atoms

Multiple Choice

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Multiple Choice

How many atoms of Hydrogen are in this compound

• 1
• 2
• 3
• 4

Multiple Choice

How many total atoms are in the compound C₂H₈O ?

• 11

• 2

• 8

• 1

Multiple Choice

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

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Multiple Choice

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

• element symbol; atoms
• atom; element symbol
• subscript; protons
• compound; elements

Multiple Choice

How many atoms are there TOTAL in:

H₂SO₄

• 6

• 5

• 7

• 3

Multiple Choice

How many Hydrogen are in 4H₂O?

• 6

• 8

• 2

• 4

Multiple Choice

Which element has the greatest number of atoms?  $AgNO_3$  

• Silver

• Gold

• Nitrogen

• Oxygen

Multiple Choice

Is this an element or a compound?  $CaSO_4$  

• Element

• Compound

Multiple Choice

Which of the following is a molecule of a compound?

• $H_2$

• $Cl_2$

• $H_2O$

• $F_2$

Multiple Choice

What does the subscript in a chemical formula tell you?

• How many molecules are present

• How many atoms are present

• How many elements are present

• How many neutrons are present

Multiple Choice

A ______ is a number written in front of a chemical formula.

• Coefficient

• Subscript

• Exponent

• Coordinator

Multiple Choice

4CF₂Cl₂

• C = 4, F = 4, Cl = 2

• C = 1, F = 8, Cl = 8

• C = 4, F = 8, Cl = 8

• C = 1, F = 4, Cl = 8

Multiple Choice

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

Multiple Choice

How many O's are in Al₂(SO₄)₃

• 4

• 12

• 7

• 24

Multiple Choice

How many O's are in Al₂(SO₄)₃

• 4

• 12

• 7

• 24

Multiple Choice

Which chemical formula has 21 atoms.

• C₉H₈O₄

• H₂SO₄

• CH₃COCH₃

• H₂SO₃

Multiple Choice

What do you multiply by when you have parenthesis.

• a subscript outside of the parenthesis

• a subscript inside of the parenthesis

• a coefficient

Multiple Choice

How many atoms are present if there is no subscript following the element symbol?

• 0

• 1

• 2

Multiple Choice

Which one is the coefficient 4H₂O?

• 4

• H

• 2

• O

Multiple Select

Which formulas have the same number of HYDROGENs?

Multiple Select

Which formulas have the same number of HYDROGENs?