Isotope Practice

How many neutrons in C-14?

• 6
• 7
• 14
• 8

Tags

NGSS.HS-PS1-8

An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?

• 15

• 31

• 16

• 47

Tags

NGSS.MS-PS1-1

Tell me how many neutrons Co 60 has.

• 27

• 33

• 0

• 59

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Tags

NGSS.MS-PS1-1

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Two different isotopes have the same number of neutrons.

• True

• False

Tags

NGSS.HS-PS1-8

How do you find the mass number of an atom?

• # of protons + # of electrons

• # of protons

• # of protons + # of neutrons

• # of neutrons + # of electrons

How do you find the atomic number of an atom?

• # of protons + # of electrons

• # of protons + neutrons

• # of neutrons

• # of protons