Q.1
An element is made up from what?
  • Molecules
  • Compounds
  • Two or more different types of atom
  • One type of atom
Q.2
Which of the following elements is not found in CaHCO ?
  • Calcium
  • Carbon
  • Cobalt
  • Oxygen
Q.3
What particles are present in the nucleus of an atom?
  • Protons only
  • Neutrons only
  • Electrons only
  • Protons and neutrons
Q.4
Where are the electrons found?
  • In a single group close to the nucleus
  • Orbiting the nucleus like the planets of the Solar System
  • In 'shells' surrounding the nucleus
  • Fixed in place at different distances from the nucleus
Q.5
Which of the following give the charges in order for the proton, neutron and electron?
  • +1, 0, -1
  • 0, +1, -1
  • -1, +1, +1
  • +1, +1, -1
Q.6
Which of the following statements is true in an atom?
  • The number of protons is always equal to the number of electrons
  • The number of protons is always equal to the number of neutrons
  • The number of protons is sometimes equal to the number of electrons
  • The number of protons is never equal to the number of electrons
Q.7
Atoms of a particular element all have the same number of what?
  • Particles
  • Nuclei
  • Neutrons
  • Protons
Q.8
The element Argon has an atomic number of 18 and a mass number ofWhich of the following statements is .
  • Argon has 18 protons and 22 neutrons
  • Argon has 18 neutrons and therefore 18 electrons
  • Argon has 18 electrons and 22 protons
  • Argon has 18 neutrons and 22 protons
Q.9
Which of the following represents the arrangement of the 18 electrons in the Argon atom?
  • 2.8.6.2
  • 2.8.2.6
  • 8.10
  • 2.8.8
Q.10
The element sodium has an atomic number 11 and mass numberWhich of the following gives the correct number of protons, neutrons and the electron arrangement in the correct order?
  • 23, 11, (2.8.1)
  • 12, 11, (2.6.3)
  • 11, 12, (2.8.1)
  • 11,12, (8.2.1)
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