The products of electrolysis can be predicted for a given electrolyte. Sample exam questions - chemical changes - AQA Understanding how to approach exam questions helps to boost exam performance.

Instead, the atoms rearrange themselves to form new chemicals. This is known as a chemical change. The other kind of change in chemistry is a physical change, which is when a substance changes ...

Since there is a flame in this experiment, be sure that a teacher, parent, or other adult works with you. Wear goggles when doing this experiment as well as when cleaning up. Tealight candles are used ...

She then moved to more complex experiments with a mixed-species ... not account for the potential impacts of global climate change. A chemical deemed safe under normal conditions might become ...

The activities they did were the same physical and chemical changes experiment that the 6th graders did and a second experiment that showed what happens to the brain when the head is hit.