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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
M3.1 ANOTHER REACTION ON MIXING AT ROOM TEMPERATURE
LINKS
The video shows the reaction between calcium and water.
Watch the video:
What changes do you see?
What evidence is there that
at least
one of the products is in the gas state?
Why is the white reaction product left for several hours?
Notes: see Teachers’ Guide
Practical notes: see Teachers’ Guide
teachers’ guide m4
teachers’ guide hs3
more info
m1: changing
m2: mixing reaction
m3: calcium water
m4: heating reaction
m5: in solution
m6: decomposition
m7: dehydration
more info
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a Science Enhancement Programme CD-ROM 2005
user guide
