Chemistry - Review

Front

What do Roman numerals indicate when naming ionic compounds with transition metals?

Back

The charge of the metal.

Front

What is the correct name for the compound Ca(CO₃)?

Back

Calcium carbonate.

Front

What element is represented by the PES spectrum if the answer is O?

Back

Oxygen.

Front

What happens to the pressure of a gas at constant temperature when the volume is doubled?

Back

The pressure is halved.

Front

Which of the following reactions is balanced? 2Na + 2H₂O → 2NaOH + H₂?

Back

Yes, this reaction is balanced.

Front

What is an ionic compound?

Back

A compound formed by the electrostatic attraction between oppositely charged ions.

Front

Define the term 'molar mass'.

Back

The mass of one mole of a substance, usually expressed in grams per mole (g/mol).

Front

What is the principle behind the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.