Chemistry Unit 2 Review

A neutral atom may contain 8 protons,

• 9 neutrons and 10 electrons.

• 9 neutrons and 8 electrons.

• 8 neutrons and 10 electrons.

• 10 neutrons and 9 electrons.

Tags

NGSS.MS-PS1-1

You can determine the identity of an element if you know how many _______ it has.

• protons

• neutrons

• electrons

• energy levels

The nucleus of an atom has all of the following characteristics EXCEPT that it

• is positively charged.

• contains nearly all of the atom’s mass.

• is very dense.

• contains nearly all of the atom’s volume.

Tags

NGSS.HS-PS1-8

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of ____.

• 5

• 6

• 8

• 11

Tags

NGSS.MS-PS1-1

How many valence electrons does an atom of magnesium typically have?

• 2

• 3

• 12

• 24

The name of the force that is able to overcome the repulsive force between protons in an atom is the _______.

• weak nuclear force

• gravitational force

• electromagnetic force

• strong nuclear force

• strong atomic force

The number of energy levels an atom will have is based on the number of _______ it has.

• protons

• neutrons

• electrons

• quarks

Which of the following would NOT be found in the nucleus of an atom?

• protons

• neutrons

• electrons

• quarks

Which statement about the arrangement of the periodic table is not true?

• Noble gases are on the right side of the periodic table.

• Metals are found on the right side of the periodic table.

• Halogens are on the right side of the periodic table.

• Transition metals are in the center of the periodic table.

What kind of charge does an ion have?

• Positive

• Negative

• Neutral

• Can be + or -