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Water (Understanding what is water? (a very precious substance (living…
Water
Understanding what is water?
a very precious substance
living things need it for survival
plants need it to make food
our daily life depend a lot on it
a good solvent
exist in 3 states
solid
ice, snow, hail, sleet
liquid
rain drops, clouds
gas
water vapour, steam
is a matter
has mass & occupy space
colourless / transparent
How water can change state?
Gaining heat
Melting
from solid to liquid
evaporation
Liquid to gas
boiling
liquid to gas
Losing heat
freezing
liquid to solid
condensation
gas to liquid