Q1 Chem. Test #3

Particles in an atom that are neutral and have no charge are 

• megatrons 

• electrons 
• neutrons 
• protons 

How many neutron are in the atom "K"?

• 29

• 19

• 58

• 20

The atomic number is equal to _.

• the number of protons and electrons

• the number of protons only

• the total number of protons and neutrons

• the number of electrons only

The atomic mass is equal to _.

• the number of protons only
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons, neutrons, and electrons.

This picture shows different isotopes of hydrogen written in isotope notation. How many protons does tritium have?

• 1

• 2

• 3

This picture shows different isotopes of hydrogen written in isotope notation. How many neutrons does tritium have? (remember-- mass number is protons plus neutrons)

• 1

• 2

• 3

What property determines if an atom is identified as Chlorine?

• it has 18 neutrons

• it has an atomic mass of 35

• it has 17 protons

• Its element symbol is Cl

How many neutrons are present in the Sodium atom ?

• 12

• 11

• 34

• 23

How many PROTONS does nitrogen have if it has the following charge: N^3- ?

• 14

• 7

• 10

• 4

How many ELECTRONS will iron have if it has the following charge: Fe³⁺ ?