Elements
Acids and Bases
Solutions
Organic Chemistry
Nuclear Reactions
400

Atoms of the same element with differing numbers of neutrons

What is an isotope?

400

Substances that can donate protons (H+ ions) when dissolved in water, increasing the concentration of hydronium ions (H3O+)

What is an acid?

400

The medium in which the solute is dissolved to create a homogeneous mixture

What is a solvent?

400

A compound that contains carbon

What is an organic compound?

400

The time required for half of a radioactive substance to decay

What is a half-life?

800

A relative mass unit of an isotope of an element based on the standard for carbon-12 isotope

What is the atomic mass unit (amu)?

800

Substances that can accept protons (H+ ions) when dissolved in water, increasing the concentration of hydroxide ions (OH-)

What is a base?

800

Water containing calcium or magnesium ions, making it less effective at lathering with soap

What is hard water?

800

Organic compounds consisting of only hydrogen (H) and carbon (C) atoms

What are hydrocarbons?

800

A high-energy electron or positron emitted during decay

What is a beta particle?

1200

A planetary (shell) model describing how electrons revolve around a positively charged nucleus in well-defined circular orbits

What is the Bohr Model?

1200

A scale used to measure the acidity or alkalinity of a solution, ranging from 0 (most acidic) to 14 (most alkaline), with 7 being neutral

What is the pH scale?

1200

Substances that, when dissolved in water, produce ions and can conduct electricity

What are electrolytes?

1200

A group of atoms responsible for the characteristic reactions of a particular compound

What is a functional group?

1200

High-energy electromagnetic radiation emitted from an excited nucleus

What is a gamma ray?

1600

Atoms of the same element with differing numbers of electrons?

What are ions?

1600

A water molecule with an attached hydrogen ion, often associated with the acidity of a solution

What is a hydronium ion?

1600

The maximum amount of a substance that can dissolve in a given solvent at a particular temperature

What is solubility?

1600

A series of compounds that contain carbon and hydrogen atoms with single covalent bonds

What is an alkane?

1600

The process of splitting a massive nucleus into multiple, more stable nuclei

What is fission?

2000

Organized array of all the chemical elements in order of increasing atomic number

What is the periodic table of elements?

2000

A chemical reaction in which an acid and a base react to form water and a salt, effectively neutralizing the acidic or basic properties of the reactants

What is neutralization?

2000

A solution in which no more solute can dissolve at a given temperature and pressure

What is a saturated solution?

2000

A figure indicating the antiknock properties of a fuel, based on a comparison with a mixture of isooctane and heptane.

What is an octane number/rating?

2000

The radiation present in the environment from natural sources

What is background radiation?