1. materials materials materials
Q1 Q2 Q3
Name four materials that can What is an element?
be recycled How many elements do we know
about?
A1 A2 A substance that cannot A3
Glass, paper or card, plastic, be split up into anything simpler 117 elements—90 of which are
metal by chemical reactions found naturally.
materials materials materials
Q4 Q5 Q6
What is the proper name for the What is the periodic table? Why is Demitri Mendeleev
particles in a substance? famous?
A4 A5 A6 He invented the Periodic
Atoms A table showing all the elements Table AND predicted what
in order of atomic mass would be in the gaps
materials materials materials
Q7 Q8 Q9
Describe two properties of Describe two properties of non What does brittle mean?
metals. metals.
A7 A8 Brittle, gases or solids that A9
Shiny, good conductors of heat melt easily, good insulator or Substances that shatter when
+ electricity, flexible, solid heat and electricity broken.

2. materials materials materials
Q10 Describe two tests you Q11 Q12
could carry out to find out if a What two chemicals are used Name one use of chlorine.
substance is a metal or non when recycling paper?
metal
A10 A11 A12
Testing electrical conductivity, Oxygen and chlorine Kill bacteria in swimming pools,
hit it with a hammer bleach recycled paper.
materials materials materials
Q13 Q14 Q15
What is a compound? What is a molecule? How can you show the number
of atoms in a compound?
A13 A14 A15
Two or more elements Two or more atoms joined By using a chemical formulae
chemically joined together together
materials materials materials
Q16 Q17 Q18
Iron + oxygen = Magnesium + oxygen = What is the formula of water
and how many of each element
is there?
A16 A17 A18
Iron oxide Magnesium oxide H2O and
2 hydrogen, 1 oxygen

3. materials materials materials
Q19 Q20 H2SO4 Q21
Describe a molecule of what are the elements in this What is the symbol for
Polythene. compound and how many atoms Iron?
of each?
A19 A20 A21
A long chain of carbon and 2 hydrogen atoms, 1 sulphur Fe
hydrogen atoms joined together atom and 4 oxygen atoms
materials materials materials
Q22 Q23 Q24
What is an ore? Describe the difference between What does renewable mean?
reuse and recycling.
A23 Recycling involves melting
A22 and reshaping the material, A24
A metal mixed up with other reuse involves using the object An energy resource that will not
elements and compounds again run out.
materials materials materials
Q25 Q26 Q27
What does sustainable mean? What are the benefits of Describe how to make
recycling? magnesium oxide
A25 A26 Less energy used, less A27
A way of living that does not carbon dioxide produced, saves Heat magnesium ribbon in a
harm the planet or living things limited materials. flame.

4. materials materials materials
Q28 Q29 Q30
Name two materials that are Name the non metal that When solid iodine is heated it
magnetic. conducts electricity changes to a gas—what is this
change called?
A28 A29 A30
Iron, steel, nickel, cobalt Carbon Sublimation
(graphite—pencil lead)
materials materials materials
Q31 Q32 Q33
What element has the symbol What are the symbols for silver Describe the atoms in an
Na and gold? element.
A22 A23 A24
Sodium Au = gold All the atoms are the same in
Ag = silver an element
materials materials materials
Q34 Q35 Q36
Describe the atoms in a mixture The columns down in the The rows across the periodic
periodic table are called.. table are called...
A34 There are two or more A35 A36
different atoms mixed together Groups Periods
but not joined