Unit 2 Test Review

The _____ describes the atoms in a compound.

• Chemical Equation

• Chemical Formula

• Chemical Symbol

• Coefficient

How many elements are in C₆H₁₂O_6?

• 1

• 2

• 3

• 4

How many atoms of carbon (C) are in C₆H₁₂O_6?

• 3

• 6

• 12

• 24

Element or Compound?

H₂O

• Element

• Compound

Which of the following is a compound?

• Co

• O₂

• C

• CO₂

Which is the correct formula for:

3 Hydrogen (H)

1 Sulfur (S)

4 Oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

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

How many TOTAL atoms are in:

H₂SO₄

• 6

• 5

• 7

• 3

How many atoms of Sodium (Na) are in 6NaCl?

• 1

• 12

• 3

• 6

The substances at the beginning of a chemical equation are called the ______

• product

• yield

• chemical symbol

• reactants