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y=mx+c m = gradient of the line c = the y intercept x and y are variables

THe potassium would move around on the water and fizz. This is because it is an alkali metal that reacts with the water. 2K + 2H2O --> 2KOH + H2. The fizzing is the result of this reaction. Discussion ...

In an exam you shouldn't spend too much time on your introduction and conclusion as most of your marks come from the main bulk of the essay. A good place to start with an introduction is looking at the ke...

In Spanish, the direct object pronoun replaces the object you are talking about. In a sentence, it is always placed before the verb. For example, '(Tú)llevas el libro' = you carry the book. This becomes, ...

Efficiency=useful energy /input energy x 100, so for the kettle, efficiency = 65/100 x 100 = 65% efficient. The rest of the energy is wasted as heat energy in the kettle/sound energy.