Conclusion of 'Water and Its Three States'

This is a conclusion of 'Water and Its Three States'. I will be doing 'Electricity' next. Note that this conclusion is about water, I would not put everything I have posted. I will only put some important facts for the exam.

• Water expands as it freezes to ice.
• Solids(ice) have definite shape and definite volume.
• Liquids(water) have no definite shape but have definite volume.
• Gas(air) have no definite shape and no definite volume.  
• Water loses heat, evaporates(at any temperature, below freezing point) and become water vapour.(water =>air)
• Water loses heat, freezes(at 0 degrees) and become a solid(ice) (water => ice)
• Water gains heat, boils(at 100 degrees) and become steam.
• Ice gains heat and melts, to become water.
• Steam/Water vapour lose heat, condenses and becomes liquid(water).
• Conditions for photosynthesis: Light, Water and Carbon Dioxide.
• The Water Cycle ensures a constant supply of water for all living things of the Earth.
• Water droplets => visible
• Water vapour => invisible
• Water, air and solids occupies space and have mass. They are matter.

Factors that affect rate of evaporation
Low Humidity, High temperature, Area of exposed area and Presence of Wind.
Water cycle
Water cycle in Earth
1. Water evaporates from the ground and water bodies, living things also release water vapour into the air through respiration.
2.Warm air cools as it rises to the sky =>Water vapour in warm air condenses into tiny water droplets => gather to form clouds.
3.Water droplets become big and heavy =>fall as rain, snow or hail. Rain falls onto Earth as fresh water.
4. Back to step 1.( Cycle continues)


You might want to revise my daily posts for one more time.