Practice: Periodic Table

The number of protons in an atom is determined by:

• the atomic number

• the mass number

• the number of neutrons

• the number of electrons

The number of neutrons in an atom is determined by:

• Subtracting the atomic number from the mass number

• Adding the atomic number and the mass number

• Dividing the mass number by the atomic number

• Multiplying the atomic number by the mass number

The number of electrons is determined by which of the following?

• The atomic number of the element

• The mass number of the element

• The number of neutrons in the nucleus

• The number of protons and neutrons combined

Match the following

• sum of protons and neutrons

• proton

• determines the element identity

• electrons

• neutral charge, # makes isotopes

• nuetrons

• negative charge found in the cloud

• atomic mass

• element with different neutron numbers

• isotope

Tags

NGSS.MS-PS1-1

What does the mass number of an atom represent?

• The number of neutrons only

• The number of protons only

• The number of electrons

• The total number of protons and neutrons

If an atom has 8 protons, 8 neutrons, and 8 electrons, what is its atomic number?

• 8

• 16

• 0

• 24

Tags

NGSS.MS-PS1-1