Unit 4 Practice Test ALL

Front

What is a mole in chemistry?

Back

A mole is a unit of quantity equal to 6.02 x 10^23 particles, known as Avogadro's number.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which represents the number of particles in one mole.

Front

How is the atomic mass of an element related to the mole?

Back

A mole of particles of an element is numerically equal to the atomic mass of the element in grams.

Front

What is the charge of titanium in the compound TiO2?

Back

The charge of titanium in TiO2 is 4+.

Front

What is the name of the ionic compound Cs2S?

Back

The name of the ionic compound Cs2S is cesium sulfide.

Front

What is a binary compound?

Back

A binary compound is a chemical compound that consists of exactly two different elements.

Front

Which of the following is not a binary compound: NaCl, KSCN, Li2O, Ca3P2?

Back

KSCN is not a binary compound.

Front

How many atoms of carbon are in C3H8?

Back

There are 3 atoms of carbon in C3H8.

Front

What is the formula for calculating the number of moles?

Back

The formula for calculating the number of moles is: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water (H2O) is approximately 18 g/mol.