Atoms & Elements

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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

• 2

• 1

• 3

• 6

The subatomic particle with a negative charge is the

• electron
• proton
• neutron
• nucleus 

What does the atomic number represent?

• the number of protons and usually electrons too

• the number of protons and neutrons

• the number of neutrons

True or False? Neutrons have a negative charge

• True

• False

The electrons in the outermost level are called

• protons

• valence

• charged

• periodic

Tags

NGSS.MS-PS1-1

The vertical columns of the periodic table are called...

• Periods

• Families

• Chemical Symbols

• Groups

An element with 4 protons and an atomic mass of 9 has

• 4 neutrons

• 5 neutrons

• 5 electrons

Tags

NGSS.MS-PS1-1

What two subatomic particles are contained in the nucleus?

• Protons + Electrons

• Neutrons + Electrons

• Atoms

• Protons + Neutrons

Which part represents the SYMBOL for this element?

• 14

• 7

• N

• Nitrogen