Chemical Reactions Review

Chemical Reactions Review

Multiple Choice

What is the only coefficient in the following equation?

• 1

• 2

Multiple Choice

Name the second reactant

• Li2O

• MgCl2

Multiple Choice

Name the first product

• MgCl2

• 2LiCl

Multiple Choice

How many Li's are on the product side?

• 1

• 2

Multiple Choice

Name the first reactant

• 2AlCl3

• 3Na2CO3

Multiple Choice

What is the subscript for Oxygen (O) in the reactants?

• 2

• 3

Multiple Choice

Name the last product

• Al2(CO3)3

• 6NaCl

Multiple Choice

How many sodium atoms on the reactant side?

• 4

• 6

Multiple Choice

How many Oxygen (O) atoms on the product side?

• 3

• 9

Multiple Choice

How many potassium (K) atoms are on the reactant side?

• 6

• 4

Multiple Choice

How many Oxygen (O) atoms are on the product side?

• 4

• 3

Multiple Choice

What is the formula for the second reactant?

• 3CaCrO4

• Ca3N2

Multiple Choice

Name the first reactant

• Fe2O3

• 3CO

Multiple Choice

How many total atoms are on the reactants side?

• 2

• 8

Multiple Choice

Is the following equation balanced or unbalanced?

• balanced

• unbalanced

Multiple Choice

A reaction that produces more energy than it uses, and gives off heat is classified as an...

• exothermic reaction

• endothermic reaction

Multiple Choice

A reaction that uses more energy than it makes, so it feels cold is classified as an...

• exothermic reaction

• endothermic reaction

Multiple Choice

If energy is transferred from one form to another and is never destroyed, it is known as...

• conservation of energy

• destruction of property

Multiple Choice

How many different elements are there in the following equation?

• 3

• 12

Multiple Choice

How many TOTAL atoms are there in the following equation?

• 3

• 16

Multiple Choice

How do we know a chemical reaction has occurred?

• No changes or indicators of a chemical change

• We observe indicators of a chemical change

Multiple Choice

Which state of matter has no definite shape or volume?

• gas

• liquid

Multiple Choice

A state of matter that has no definite shape BUT has a definite volume

• Solid

• liquid

Multiple Choice

Which state of matter, has a definite shape and volume

• Gas

• solid

Multiple Choice

How do we represent a chemical reaction?

• Chemical Change

• Chemical Equation