Atomic Math

What does the atomic number represent?

• the number of protons

• the number of protons and neutrons

• the number of nuetrons

• the weighted average of isotopes

What is the mass number described as?

• the number of protons

• the number of protons and neutrons

• the number of electrons

• the number of protons and electrons

What is the atomic # of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the mass # of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the atomic number of Barium, Ba? (you can enlarge table)

• 20

• 137

• 38

• 56

Tags

NGSS.MS-PS1-1

How many protons are in a sodium atom (Na)?

• 1

• 3

• 11

• 0

Tags

NGSS.MS-PS1-1

Atoms of the same element which have a different number of neutrons are called _________________.

• ions

• isotopes

• quarks

• molecules

This subatomic particle discovered by Thomson has a negative charge.

• proton

• quark

• electron

• neutron

How many neutrons does Carbon - 14 contain?

• 7

• 6

• 14

• 8

How many neutrons does an atom of the isotope Neon-22 have?

• 12

• 10

• 22

• 20

Tags

NGSS.MS-PS1-1