Stoichiometry

Question 1

Stoichiometry

Answer 1

The study of the quantitative aspect of chemical reactions

Question 2

Avogadro’s number

Answer 2

6.022 x 1023

Question 3

Mole

Answer 3

A mole is a unit in chemistry used to measure the amount of a substance. It represents 6.022 × 10²³ particles

Question 4

Law of Definite Proportions

Answer 4

Different samples of the same compound always contain its constituent elements in the same proportions by mass.

Question 5

Law of Conservation of Mass

Answer 5

Mass can neither be created nor destroyed in a chemical reaction

Question 6

Molar mass

Answer 6

The sum of the atomic weight of an element/elements

Question 7

Excess Reagent

Answer 7

This is the reactant that is left over after a chemical reaction

Question 8

Limiting Reagent

Answer 8

This is the reactant that gets completely used up in a chemical reaction.

Question 9

Percent Yield

Answer 9

This is the reactant that remains after the reaction is complete.

Question 10

Theoretical Yield

Answer 10

This is the amount predicted based on stoichiometric calculations.

Question 11

Empirical Formula

Answer 11

Shows the simplest whole-number ratio of atoms in a compound.

Question 12

Molecular Formula

Answer 12

Shows the actual number of atoms in a molecule.

Question 13

Actual Yield

Answer 13

This is the amount of product collected from the actual experiment.