Atomic Structure and Average Atomic Mass

Front

All of the mass of an atom comes from what location?

Back

nucleus

Front

An isotope has three forms. 30% have a mass of 4 amu, 20% have a mass of 5 amu and 50% have a mass of 3 amu. Average atomic mass will be closest to?

Back

3 amu

Front

What causes the mass of the nucleus to increase?

Back

adding a neutron

Front

A neutral atom of Carbon-13 has how many electrons and how many neutrons?

Back

6 electrons and 7 neutrons

Front

An electron has what type of charge?

Back

negative

Front

What is the average atomic mass?

Back

The weighted average of the masses of an element's isotopes.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the charge of a proton?

Back

positive

Front

What is the charge of a neutron?

Back

neutral

Front

What is the charge of an electron?

Back

negative