Question 7
Work in pairs. Pour 100 cm³ of warm (not boiling) water into a beaker. Place a metal teaspoon and a plastic teaspoon into the beaker and leave them for three minutes.
Caution: Do not use water that is too hot. Use caution when testing the temperature of the spoons to avoid getting burns.
Diagram labels / Nhãn hình: beaker = cốc thủy tinh; warm water = nước ấm; metal teaspoon = thìa cà phê kim loại; plastic teaspoon = thìa cà phê nhựa.
In step 4, after three minutes, carefully feel the spoons and compare their temperatures with when you placed them in the beaker. Explain your observation in step 4. Why did this happen?
Caution: Do not use water that is too hot. Use caution when testing the temperature of the spoons to avoid getting burns.
Diagram labels / Nhãn hình: beaker = cốc thủy tinh; warm water = nước ấm; metal teaspoon = thìa cà phê kim loại; plastic teaspoon = thìa cà phê nhựa.
In step 4, after three minutes, carefully feel the spoons and compare their temperatures with when you placed them in the beaker. Explain your observation in step 4. Why did this happen?
