Chemistry Vocabulary

An acid is:

• a substance that donates protons or accepts electrons

• a substance that donates electrons or accepts protons

• a substance that neither donates nor accepts protons or electrons

• a substance that only donates electrons

What are hydronium ions?

• Hydronium ions are H2O molecules.

• Hydronium ions are H+ ions.

• Hydronium ions are H3O+ ions.

• Hydronium ions are OH- ions.

An indicator in chemistry is used to:

• measure temperature

• indicate the end point of a titration

• determine the density of a substance

• calculate molecular weight

Hydroxide ions are:

• positively charged ions

• negatively charged ions

• neutral molecules

• complex compounds

What does a base produce when dissolved in water?

• Hydrogen ions

• Hydroxide ions

• Salt

• Water

What happens to a strong acid upon dissolving in water?

• It forms a weak acid.

• It completely ionizes.

• It remains unchanged.

• It forms a precipitate.

A weak acid is:

• an acid that completely dissociates in water

• an acid that partially dissociates in water

• an acid that does not dissociate in water

• an acid that is stronger than a base

What happens to a strong base upon dissolving in water?

• It forms a weak acid.

• It dissociates completely into ions.

• It remains undissolved.

• It forms a precipitate.

A weak base is:

• a substance that completely dissociates in water

• a substance that partially dissociates in water

• a substance that does not dissociate in water

• a substance that reacts violently with acids

What does pH measure?

• The concentration of hydrogen ions in a solution

• The temperature of a solution

• The density of a solution

• The color of a solution