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f3: air
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User guide
Teachers’ Guide
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Substances
A1 Melting/Freezing
B1 The particle theory
C1 The gas state
D1 The three states
E1 Density
Mixtures
F1 Melting behaviour
G1 Evaporation of water
H1 Condensation of water
I1 Recognising dissolving
J1 Solubility
K1 Separating mixtures
Changing substances
L1 Structures
M1 Chemical change
Advanced substances
N1 Crystals
O1 Change of state
P1 Gas and pressure
Advanced mixtures
Q1 Diffusion
R1 Rate of evaporation
S1 Rate of dissolving
T1 Chromatography
Advanced changes
U1 Formulae
V1 Fire
W1 Acids
F3.2 QUESTIONS
LINKS
Watch the animation, which represents air:
Think for Yourself...
The animation shows only a few particles and these are nitrogen and oxygen. Why?
Which particles are the oxygen particles? How did you decide?
Notes: see Teachers’ Guide
teachers’ guide f2
more info
f1: melting
f2: stuff
f3: air
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a Science Enhancement Programme CD-ROM 2005
user guide
