Chemistry Basics

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?

• 19

• 39

• 20

• Impossible to tell

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic mass?

• 19

• 39

• 20

• Impossible to tell

The image shows the periodic grid for POTASSIUM. How many PROTONS are found in a potassium atom?

• 19

• 39

• 20

• Impossible to tell

Tags

NGSS.MS-PS1-1

The image shows the periodic grid for POTASSIUM. How many ELECTRONS are found in a potassium atom?

• 19

• 39

• 20

• Impossible to tell

Tags

NGSS.MS-PS1-1

A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.

• Element

• Compound

• Molecule

• Mixture

How many electrons would an atom of Krypton have?

• 83.80

• 36

• 12

• none

Tags

NGSS.MS-PS1-1

If a Carbon atom has 6 protons, how many electrons will it have?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

How many protons are in this element?

• 79

• 196

• 117

• Cannot be determined

Tags

NGSS.MS-PS1-1

The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.

• 9

• 10

• 19

• 28

Tags

NGSS.MS-PS1-1

The number at the top of each square on the periodic table tells us the...

• number of protons in the atom.

• The number of electrons in the atom. 

• The number of nuetrons in the atom.

• The number of protons and electrons in the atom.

Tags

NGSS.MS-PS1-1