Unit 3 -LOCOM TCAP Review

Multiple Choice

Which is one reason for this observed trend?

Multiple Choice

What evidence is best used to identify the unknown element?

Multiple Choice

Multiple Choice

When 2 reactants are mixed, they interact to form products. Based on the Law of Conservation of Mass, which statement is correct?

Law of Conservation of Mass

Multiple Choice

A subscript gives the # of _____ in that particular element.

• protons

• neutrons

• electrons

• atoms

A # that comes at the beginning of the chemical formula. It indicates the # of units (total molecules).

Coefficient

Multiple Choice

A coefficient indicates the # of units (total _________).

• atoms

• molecules

• subscripts

• parenthesis

Multiple Choice

How many total atoms are in the following chemical formula?

• 1

• 2

• 4

• 8

Multiple Choice

How many Magnesium atoms are in the following chemical formula?

• 1

• 2

• 3

• 4

Multiple Choice

How many Oxygen atoms are in the following chemical formula?

• 1

• 2

• 4

• 6

Multiple Choice

How many total atoms are in the following chemical formula?

• 2

• 7

• 9

• 17

Multiple Choice

How many total atoms are in the following chemical formula?

• 20

• 11

• 24

• 8

Multiple Choice

How many Iron atoms are in the following chemical formula?

• 1

• 2

• 3

• 9

Multiple Choice

How many total atoms are in the following chemical formula?

• 3

• 5

• 6

• 9

Multiple Choice

How many Copper atoms are in the following chemical formula?

• 1

• 2

• 3

• 4