Mixing substances of different temperatures

12 questions

1. A rectangular block of steel has a length of 8 cm, a width of 4 cm and a height of 3 cm. What is the volume of the block in cm³?
2. Which of the following pieces of equipment can measure the volume of a liquid most precisely?
3. In which state of matter do the particles in water move the fastest?
4. How close together are the particles of a liquid?
5. What happens to the particles that make up a gas when it is heated to a higher temperature?
6. Why would touching a very hot piece of solid metal burn your skin?
7. 50 cm³ of water at 80°C is mixed with 50 cm³ of water at 40°C. What will be the resulting temperature of the mixture?
8. 100 cm³ of water at 60°C is mixed with 50 cm³ of water at 30°C. What will be the resulting temperature of the mixture?
9. 100 cm³ of water at 80°C is mixed with 300 cm³ of water at 40°C. What will be the resulting temperature of the mixture?
10. What word describes the directions in which particles of water move in the liquid or gas state?
11. What happens when faster moving particles of a hot solid collide with slower moving particles of a cold liquid?
12. Why does a cube of solid water (ice) melt when it is put into a glass of lemonade at room temperature?

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