Atom test

The atomic number is the number of....

• neutrons
• protons
• electrons
• mass number

Protons carry what charge? 

• neutral 
• negative
• positive

Electrons carry what charge? 

• neutral 
• negative
• positive

Tags

NGSS.MS-PS2-3

Neutrons carry what charge? 

• neutral 
• negative
• positive

The middle of the atom, which contains protons and neutrons, is called _____

• the shell
• the nucleus
• the cell
• the control center

Tags

NGSS.HS-PS1-8

In terms of matter, the atom is almost entirely filled with _____

• orbiting electrons
• charged protons
• heavy neutrons
• empty space

Tags

NGSS.MS-PS1-1

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

Tags

NGSS.MS-PS2-3

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

Different isotopes have...

• different masses

• different protons

• different electrons

Tags

NGSS.HS-PS1-8

24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?

• 74.92 amu
• 24.97 amu
• 75.01 amu
• 74.51 amu