Speed it up
You all enjoyed investigating ice cubes and ice cores today and discovered you could speed up melting by holding the ice in your hands. If you have an ice cube tray at home, fill it up, freeze it and continue experimenting.
How else can you speed up melting? Which room in your house does ice melt quickest in? What happens when you add salt to your ice? Remember to keep your ice in a cup or bowl to avoid puddles inside!
Slow it down
How can you stop the ice from melting? Can you cool your ice down, or protect it from the heat? Can you cover your cup or bowl in different materials such as paper or tinfoil to see if this makes a difference to melting speed?
More ice fun
Try freezing water balloons filled with water to create ice baubles. You can add different coloured food colouring to warm water and drip it on to create some great effects. Try adding salt now and watch what happens.
Try mixing some baking powder or bicarbonate of soda with water (about 3/4 powder to 1/4 of water). Put into ice cube trays, moulds or any spare plastic container you have handy, such as a cleaned yogurt pot. When frozen (overnight is best), tip out your ice onto a tray, washing up bowl or bucket. Add vinegar drop by drop and watch it fizz. What happens when you add more vinegar?