Chemistry Semester Review #1

Front

What is the name for NaH?

Back

Sodium hydride.

Front

How do you convert from Particles to Moles?

Back

Divide by 6.02 x 10^23.

Front

What is a mole?

Back

The SI unit for the amount of a substance.

Front

What type of reaction is C_{11}H_{24}+17O_2-> 11CO_2 + 12H_2O?

Back

Combustion.

Front

What is the name of K2O?

Back

Potassium oxide.

Front

What is the formula for calculating moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

18.02 g/mol.

Front

What is the difference between an ionic bond and a covalent bond?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the pH scale?

Back

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

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.