Page 1 Notes: Water, Ionic/Covalent, and Electrolyte Concepts

Vocabulary flashcards covering key concepts from Page 1 notes about water, ionic/covalent substances, and electrolytes.

Water (H2O)

A polar molecule with two hydrogen atoms covalently bonded to one oxygen; its polarity helps dissolve many ionic compounds by attracting and separating ions.

Ionic compound

A compound that dissociates into cations and anions in water, producing ions that conduct electricity.

Covalent substance

A substance held together by covalent bonds; does not form ions in water and typically does not conduct electricity.

Ionization (ionize)

The process by which a substance forms ions in solution; covalent substances in this context do not ionize.

Electrolyte

A substance that dissolves in water to yield ions and can conduct electricity.

Nonelectrolyte

A substance that does not form ions in water and does not conduct electricity.

Strong electrolyte

An electrolyte that completely ionizes in water, producing many ions and conducting electricity efficiently.

Question: Which term describes a substance that dissolves in water to produce ions and conduct electricity?

Electrolyte.

Fill in the Blank: If a substance dissolves in water, it is said to be an __.

electrolyte.

Ca(NO3)2 (Calcium nitrate) dissociates in water to form which ions?

Ca2+ and NO3- ions.

NaC2H3O2 (Sodium acetate) dissociates in water to form which ions?

Na+ and C2H3O2- ions.

Do covalent substances ionize in water according to these notes?

No; covalent substances do not have ions, so they cannot be ionized.

Fill in the Blank: Covalent substances do not have ions, so they cannot be .

ionized.

Nonelectrolyte (definition)

A substance that does not ionize in water and does not conduct electricity.