Q.1
Al+3The +3 tell you the
  • number of protons.
  • atomic mass.
  • charge of the atom.
Q.2
Iodine-131The -tells you the
  • number of protons.
  • atomic mass.
  • charge of the atom.
Q.3
The atomic mass of an atom is equal to
  • number of protons plus number of neutrons
  • number of protons plus number of electrons
  • number of electrons plus the number of neutrons
Q.4
What two subatomic particles must be equal for an atom to have no charge (neutral).
  • protons and neutrons
  • protons and electrons
  • electrons and neutrons
Q.5
Matter that is made up on only one type of atom is called
  • a compound
  • a subatomic particle
  • an element
  • water
Q.6
The term "neutral" means
  • having only a little bit of charge
  • having a positive charge
  • having a negative charge
  • having no charge at all
Q.7
Atoms are neutral because they have the same number of
  • protons and neutrons
  • protons and electrons
  • electrons and neutrons
Q.8
What is true about an atom?
  • Most of the space in an atom is taken up by the nucleus
  • Atoms are mostly empty space
  • Atoms have no mass
  • Electrons have much more mass that protons or neutrons.
Q.9
The positively charged parts of an atom are the
  • protons
  • electron clouds
  • neutrons
  • electrons
Q.10
Which of the following particles has the smallest mass?
  • neutron
  • proton
  • nucleus
  • electron
0 h : 0 m : 1 s