Definitions
A water molecule is made up of one oxygen particle and two hydrogen particles. The O is negative and H is positive.
irrigate- to supply water to crops or land
Water- is a colourless, tasteless and odourless substance.
Water is the universal solvent because many substances dissolve in water. This is part of why it is so necessary for life.
Living things (plants and animals are mostly made up of water).
Water is important in the human body ( essential for our health) because:
1. Over half of the human body is made up of water.
2. Water is the transport system that carries nutrients and substances to all the cells (tissues and organs) of the body.
3. Important chemical reactions can only take place in water.
4. Water keeps us cool since as we sweat we lose heat energy.
Particle Theory of Matter states:
1.Everything is made of particles.
2. Those particles are constantly moving.
3. There are spaces between the particles.
4. When heated, the particles move faster as they have more energy.
States of Water
Water can be a gas ( water vapour), liquid or solid (ice).
Water particles have in most energy when they are in the vapour state. And they have the least when they are the solid state.
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