1 - Getting Started ~4 mins
Look at this square of chocolate and this piece of butter. They feel firm and hold their shape.
What do you think would happen if we warmed them gently: would they stay the same, or change?
2 - Warming and Cooling ~4 mins
Think about chocolate in a warm coat pocket, or butter left on a sunny windowsill. Everyday warmth can change how some materials look and feel.
Today we will find out: what happens to chocolate and butter when we warm them gently, and then let them cool?
3 - Our Question and Predictions ~5 mins
Our question: what happens to chocolate and butter when we warm them gently, and then let them cool?
On your Investigation Journal page, write or draw what you think will happen to each one when it is warmed, and what you think will happen when it cools. Say why.
4 - Warming on the Tray ~8 mins
Watch the warm-water tray carefully. Keep your hands and faces back.
First we warm the chocolate. Then we warm the butter. Look for changes in shape, shine and how runny each one becomes.
5 - Watching Them Cool ~6 mins
Watch as your teacher lifts the dishes off the warm water and leaves them on a cool plate.
Look for early signs of cooling: a thicker edge, less shine, or a slower drip when the dish is tipped. Use your eyes only. Do not touch.
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