Physical Science - 9 Weeks #1 Study Guide - Part 4

Front 1

From the gold foid experiment, Rutherford concluded that the positive charges in an atom are concentrated in a small, central area that Rutherford called the ____.

Back 1

nucleus

Front 2

Which subatomic particle has a POSITIVE charge?

Back 2

proton

Front 3

Which subatomic particle has a NO charge, or a charge of 0?

Back 3

neutron

Front 4

Which subatomic particle has a NEGATIVE charge?

Back 4

electron

Front 5

Which subatomic particle is NOT found in the nucleus, but rather in the space outside the nucleus?

Back 5

electron

Front 6

The ____ number of an element equals the number of protons in the nucleus of the atoms of that element.

Back 6

atomic

Front 7

The ____ number of an atom is the sum of the protons and neutrons in the nucleus of the atom.

Back 7

mass

Front 8

Atoms of the same element that have different numbers of neutrons are called ____.

Back 8

isotopes

Front 9

An ____ is a visual model of the most likely locations for electrons in an atom.

Back 9

electron cloud

Front 10

The most stable electron configuration is the one in which the electrons are in orbitals with the ____ possible energies.

Back 10

lowest

Front 11

When all the electrons in an atom have the lowest possible energies, the atom is said to be in its ____.

Back 11

ground state

Front 12

Which state of electron configuration is more stable: an excited state of the ground state?

Back 12

ground state