Q.1
The Greek word means ______.
  • atomic number
  • number of neutrons
  • negative and positive charges
  • uncuttable or something that cannot be divided
Q.2
A substance that consists of a single type of atom is _________.
  • a chemical element
  • an element
  • a nuclei
  • an isotope
Q.3
This is a particle that carries a negative electrical charge.
  • Ion
  • Electron
  • Proton
  • Neutron
Q.4
Any substance that cannot be broken into two or more simpler substances is known as _______.
  • an element
  • a subatomic hadron particle
  • a chemical element
  • an isotope
Q.5
The center or core of an atom is called ______.
  • an atomos
  • a neutron
  • a nucleus
  • a nucleon
Q.6
These have the same number of protons in each atom but the neutron numbers can vary.
  • Elements
  • Isotopes
  • Atomic numbers
  • Subatomic hadron particles
Q.7
This contains a dense central nucleus that is surrounded by a cloud of negatively charged electrons.
  • Proton
  • Electron
  • Neutron
  • Atom
Q.8
The number of protons in the nucleus of an atom is known as the ________.
  • subatomic hadron particle
  • atomic number
  • nucleon
  • neutron factor
Q.9
This is a particle that carries a positive electrical charge.
  • Neutron
  • Ion
  • Proton
  • Electron
Q.10
The study of the composition, structure, properties and change of matter is known as _______.
  • matter
  • atoms
  • physics
  • chemistry
0 h : 0 m : 1 s