Unit 4

Question 1

Single replacement

Answer 1

When one element replaces another in a compound

Question 2

Empirical Formula

Answer 2

The symbols for the elements combined in a compound, with subscripts showing the smallest whole number mole ratio of the different atoms in the compound.

Question 3

Decomposition

Answer 3

When a single compound reacts to produce 2 or more substances

Question 4

Combustion

Answer 4

When a substance combines with O gas

Question 5

Mole Ratio

Answer 5

Relates the amount of moles of any two substances in a reaction

Question 6

Stoichiometry

Answer 6

The study of quantities of materials consumed and produced in Chemical reactions

Question 7

Limited reactant

Answer 7

Substance that is used up in the reaction

Question 8

Synthesis

Answer 8

When 2 or more substances combine to form a new one

Question 9

Percent Composition

Answer 9

Mass of element in sample compound divided by Mass of sample of compound X 100

Question 10

Double Displacement

Answer 10

When the ions of 2 compounds exchange places