Atomic Math Practice

What is the mass # of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many ELECTRONS are in an ATOM with an atomic # of 50.

• 5

• 8

• 50

• 2

Silicon has a mass number of 28 and an atomic number of 14. How many protons does it have?

• 28

• 14

• 42

• 7

Tags

NGSS.MS-PS1-1

How many protons, neutrons, and electrons does sulfur have? It's atomic number is 16 and it's atomic mass is 32.

• 16 protons, 16 neutrons, and 16 electrons

• 16 protons, 32 neutrons, and 16 electrons

• 16 protons, 16 neutrons, and 32 electrons

• 32 protons, 16 neutrons, and 16 electrons.

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.MS-PS1-1

which atom has  4 neutrons?

• Li-6

• Li-7

• Li-8

• they have the same # of neutrons

Tags

NGSS.MS-PS1-1

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• the mass #

Tags

NGSS.MS-PS1-1

How many electrons does Oxygen have?

• 16

• 8

• 15.99

• O

Tags

NGSS.MS-PS1-1

• Protons + Electrons
• Atomic Number - Mass
• Mass - Atomic Number 

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

• 6

• 10

• 4

• 8