CHEMISTRY FALL 2023-24 REVIEW V2

Front

How many moles are in 3.01 x 10^22 atoms of magnesium?

Back

0.050 moles

Front

What are the units for molar mass?

Back

grams per mole

Front

Which type of compounds have a high melting point (1000°C-3000°C)?

Back

Ionic compounds

Front

Which of these pairs are covalently bonded?

Back

F and Cl

Front

How are the bonds in Na2O best described?

Back

Ionic, because valence electrons are transferred.

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit that measures the amount of substance, defined as exactly 6.022 x 10^23 particles.

Front

What is the difference between ionic and covalent bonds?

Back

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

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole.

Front

What is the significance of Avogadro's number?

Back

Avogadro's number (6.022 x 10^23) is used to convert between moles and number of particles.

Front

What type of bond is formed between metals and nonmetals?

Back

Ionic bond.