Q.1
All elements and compounds are made from what?
  • Atoms
  • Molecules
  • Ions
  • Varying quantities of fire, earth, air and water
Q.2
Which of the following is the correct definition of a compound?
  • A substance containing atoms of one element
  • A substance containing atoms of two elements
  • A substance containing atoms of two elements chemically bonded
  • A substance containing atoms of two or more elements chemically bonded
Q.3
In chemical equations the atoms of each element are represented by what?
  • Numbers
  • Colours
  • Shapes
  • Symbols
Q.4
Elements are listed on the periodic table and can be classified as metals and non-metals. Where are they found on the periodic table?
  • Metals on the right, non-metals on the left
  • Metals on the left, non-metals on the right
  • They are not arranged in any particular order
  • The non-metals are at the centre with metals around the outside
Q.5
When atoms join together to form molecules what happens to their electrons?
  • A pair of electrons is transferred from one atom to the other
  • The atoms lose at least one pair of electrons
  • The atoms gain at least one pair of electrons
  • The atoms share at least one pair of electrons
Q.6
Elements normally exist as atoms but they can form charged particles called ions. How do they do this?
  • It happens when the atoms are rubbed on a piece of fabric
  • They lose or gain at least one electron
  • It can only happen to them in a Van-der-Graaf machine
  • They are only formed in space where there are cosmic rays
Q.7
Which of the following best describes the atoms of an element?
  • The atoms of an element are round
  • The atoms of an element are the same colour
  • The atoms of an element are the same type
  • The atoms of an element are solid
Q.8
Which of the following is a compound containing non-metals ?
  • Sodium carbonate
  • Methane
  • Calcium chloride
  • Iron fluoride
Q.9
Which of the following lists contains metallic elements?
  • Al, CO, Fe, Mg, Au
  • Na, Li, I, Zn, Fe
  • Fe, Al, Na, Mg, Zn
  • Cu, Pt, Fe, Ag, Br
Q.10
Which of the following lists contains the missing words from the following passage in the right order? There are over a __________ different types of atom, called __________. The atoms of a particular element are ___________ to each other. They cannot be changed ____________ into any different element. _________ are substances that contain atoms of at least two elements chemically combined.
  • hundred, elements, identical, chemically, compounds
  • lot, hundred, compounds, elements, joined
  • hundred, compounds, identical, chemically, elements
  • elements, hundred, compound, same, joined, ions
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