Atoms, Chemical Bonding and Acid-Bases

Front

What is a base?

Back

A substance that contains a higher concentration of OH- ions than pure water, resulting in a pH value above 7.

Front

What is an electron?

Back

A subatomic particle with a negative charge that orbits the nucleus of an atom.

Front

What occurs when two atoms share two electrons?

Back

A single covalent bond is formed.

Front

What is an acid?

Back

A substance that contains a higher concentration of H+ ions than pure water, resulting in a pH value below 7.

Front

What is the pH of a substance that is classified as an acid?

Back

A substance with a pH of less than 7.

Front

What is the pH scale?

Back

A scale that measures the acidity or basicity of a solution, ranging from 0 (most acidic) to 14 (most basic), with 7 being neutral.

Front

What is a covalent bond?

Back

A chemical bond formed when two atoms share one or more pairs of electrons.

Front

What is the difference between an acid and a base?

Back

Acids release H+ ions in solution, while bases release OH- ions.

Front

What is a neutral solution?

Back

A solution with a pH of 7, where the concentrations of H+ and OH- ions are equal.

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.