Review: Chapter 4

Front

What is a neutron?

Back

A neutron is a neutrally charged particle found in the nucleus of an atom.

Front

How do electrons move in Niels Bohr’s model of the atom?

Back

Electrons move like planets orbiting the sun.

Front

What is the mass number of an atom with 34 protons and 40 neutrons?

Back

The mass number is 74.

Front

What does the atomic number of an element represent?

Back

The atomic number represents the number of protons in the nucleus.

Front

What is electron configuration?

Back

Electron configuration is the arrangement of electrons in the orbitals of an atom.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in an atom.

Front

What is an isotope?

Back

An isotope is a variant of an element that has the same number of protons but a different number of neutrons.