Atoms and Elements

Protons and neutrons clump together to form the __________ of an atom.

• nucleus

• centrosome

• outer shell

• orbital

Tags

NGSS.MS-PS1-1

This subatomic particle of an atom has a NEGATIVE charge.

• electron

• proton

• atom

• neutron

Tags

NGSS.MS-PS1-1

The image shows the periodic grid of potassium. How many electrons are found in the potassium atom?

• 19

• 20

• 39

• 40

Tags

NGSS.MS-PS1-1

Which part of an atom is represented by the blue circles?

• electrons

• neutrons

• protons

Tags

NGSS.MS-PS1-1

Each column in the periodic table is called a _________ .

• period

• group

• cluster

• unit

Periods on the periodic table are __________.

• Horizontal Rows

• Vertical Columns

Elements are made of 

• many types of atoms 

• the periodic table

• one type of atom 

• molecules 

Tags

NGSS.MS-PS1-1

All matter is made of 

• energy 

• atoms 

• electrons 

• compounds 

Tags

NGSS.MS-PS1-1

This subatomic particle of an atom has NO charge.

• electron

• proton

• atom

• neutron

Tags

NGSS.MS-PS1-1

These are found on the Periodic Table.

• Compounds

• Elements

• Mixtures