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G7.Midterm revision 1

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  • Electron shell has .................. charge
    negative
  • Which subatomic particle has negative charge?
    Electron
  • Which particle moves around nucleus?
    Electrons
  • How many electrons are there in this atom?
    19
  • How many periods are there in a periodic table?
    7
  • Which subatomic particle has positive charge?
    Proton
  • Which metal is liquid at room temperature?
    Mercury
  • Which one below is a noble gas?
    Oxygen
    Bromine
    Helium
    Carbon
  • X: 11 protons, Y: 12 electrons, Z: 11 electrons. Which 2 atoms are of the same element?
    X and Z
  • An atom has 8 protons. How many electrons does it have?
    8
  • What are three sub-atomic particles?
    Proton, neutron, electron
  • Which one below is an alkali metal?
    Bromine
    Sodium
    Hydrogen
    Iron
  • Inside nucleus, there are protons and .............
    neutrons
  • What type of element is Carbon?
    Non-metal
  • Mass number is the total number of ................... and .....................
    protons and neutrons
  • Nucleus has ...................... charge because it has protons
    positive
  • In an atom, what is the relationship between the number of protons and electrons?
    Equal/Same
  • An atom has 6 electrons and 8 neutrons. How many protons does it have?
    6
  • What is the mass number of Bromine atom with 35 protons and 45 neutrons?
    80
  • Elements have the same number of ......................
    protons
  • How many neutrons are there in this atom?
    20
  • What type of element is Iron?
    Metal
  • Proton number is also called ............. number
    atomic
  • Metals are on the .................... of the periodic table
    left
  • How many protons are there in this atom?
    19
  • Non-metals are on the .................... of the periodic table
    right
  • Which one is a property of metals?
    Dull
    Soft
    Malleable
    Poor electrical conductor
  • Which subatomic particle has no charge?
    Neutron
  • What is the atomic number of oxygen atom with 8 protons?
    8
  • What type of element is bromine?
    Non-metal
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