Global: HW: create a new file flip:
Vocab cards: 14
Concept cards:5
ES: continue to study for your Energy Test for tomorrow.
Extra credit for ES is due tomorrow; you should try it.
What happens to the temperature of a block of ice when you put a Bunsen burner underneath it?
You might think that the temperature goes up smoothly, but that's not what happens. The graph of temperature against time is called a heating curve. Let's look at the heating curve for water.
A heating curve for water notice that, in general, the temperature goes up the longer the heating continues. However, there are two horizontal flat parts to the graph. These happen when there is a change of state. The first change of state is melting (changing from a solid to a liquid). The temperature stays the same while a substance melts. For water, this temperature is 0°C because the melting point for water is 0°C. The second change of state is boiling (changing from a liquid to a gas). The temperature stays the same while a substance boils. For water, this temperature is 100°C because the boiling point for water is 100°C.
Click the Macbeth image to connect to a site to read and quiz yourself.
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