Chemistry 1st 9 Wks Review

Front

What model of the atom shows electrons in specific, fixed orbits?

Back

Bohr Model

Front

How many neutrons are in an atom with a mass number of 19 and an atomic number of 9?

Back

10 neutrons

Front

What is the atomic number of Barium?

Back

56

Front

What is the molar mass of Potassium Bromide (KBr)?

Back

119 g/mol

Front

What is the charge of a neutron?

Back

Neutrons are neutrally charged.

Front

What is the charge of a proton?

Back

Protons have a positive charge.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom.

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Mass number - Atomic number.

Front

What is the difference between atomic mass and molar mass?

Back

Atomic mass is the mass of a single atom, while molar mass is the mass of one mole of a substance.