1) If H2O was to change state from solid (ice) to liquid (water), would that be a physical or chemical change? Explain your answer.
2)
a) Draw the arrangement of the particles in a solid.
b) Describe the arrangement of the particles in a solid and explain why the particles have this arrangement.
c) What happens to the particles in a solid as the temperature of the solid increases? The temperature is not increased beyond the melting point, which means that no change of state takes place.
3)
a) Draw the arrangement of the particles in a liquid.
b) Draw the arrangement of the particles in a gas.
4) We are now going to look at water in the three states; solid, liquid and gas.
a) In which state do the water molecules have the most energy?
b) In which state do the water molecules have the least energy?