General Chemistry Concepts Review

These flashcards cover key concepts related to moles, chemical reactions, stoichiometry, bonding, and molecular structure in chemistry.

Avogadro’s Number is __ particles/mol.

6.022 × 10²³

The formula to calculate moles from mass is __.

moles = mass / molar mass

Mass Percent is calculated using the formula __.

% element = (mass of element / molar mass compound) × 100

An Example of Molar Mass for H₂O is __ g/mol.

18.02 g/mol

To find the Empirical Formula, you convert percentage to __.

grams

The Molecular Formula can be determined using the formula n = __ / empirical formula mass.

molar mass

In a balanced equation, there are the same number of __ on both sides.

atoms

When balancing equations, you balance __ last.

Hydrogen and Oxygen

The types of chemical reactions include Combination, Decomposition, __, Double Replacement, and Combustion.

Single Replacement

Oxidation is defined as the __ of electrons.

loss

According to the Law of Conservation of Mass, total reactant mass equals total __ mass.

product

Mole–Mole Conversion uses __ as ratios.

balanced coefficients

The __ Reactant determines the yield of a chemical reaction.

limiting

Percent Yield is calculated using the formula __.

(actual / theoretical) × 100

The Heat of Reaction for exothermic reactions is represented as __.

∆H < 0

To draw Lewis Structures, you must count __.

valence electrons

VSEPR theory predicts that a Linear shape has an angle of __ degrees.

180°

Bond Polarity is considered nonpolar when ∆EN is less than __.

0.4

A __ molecule is symmetrical.

nonpolar

The order of Intermolecular Forces from strongest to weakest is __.

Ionic > H-bond > Dipole > Dispersion

Phase Changes include melting, freezing, vaporization, condensation, and __.

sublimation