What is at the center of every atom?
  • An electron
  • A compound
  • A molecule
  • A nucleus
Which two particles make up the nucleus of an atom?
  • Protons and Electrons
  • Protons and Neutrons
  • Molecules and Compounds
  • Neutrons and Electrons
In an atom, what is the number of protons equal to?
  • The number of electrons.
  • The number of neutrons.
  • The number of molecules.
  • The number of nuclei.
The particles with no charge in an atom are the _______.
sc-5 sb-6-Structure of an Atomimg_no 189.jpg
  • electrons
  • neutrons
  • protons
  • protons and neutrons
The positively charged particles of an atom are the ________.
sc-5 sb-6-Structure of an Atomimg_no 190.jpg
  • electrons
  • protons
  • neutrons
  • protons & neutrons
The negatively charged particles of an atom are the ______.
sc-5 sb-6-Structure of an Atomimg_no 191.jpg
  • electrons
  • protons
  • neutrons
  • protons & neutrons
An electron has this charge
  • positive
  • negative
  • neutral
A neutron has this charge
  • negative
  • positive
  • neutral
A proton has this charge
  • negative
  • positive
  • neutral
An atom with atomic number 6 would have how many protons?
  • 6
  • 12
  • 3
  • cannot be determined 
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