Science Year 9 Revision

Question	Answer
What is an Isotope?	An Isotope is another word for a different type of atom.
Describe the Plum Pudding Model	The plum pudding model was positively charged atoms with negative electrons inside of it.
What was the Alpha Scattering Experiement?	The Alpha scattering experiment was the experiement of which scientists shot Alpha Particles into a thing strip of gold. They discovered that the beam went through the strip of gold, but only in certain areas. Some bounced off as they put sensors in front of and behind the strip of gold and some of the particles were detected in the sensor behind the strip, and some in front.
Describe Filteration	Filtration is the separating of a insoluble solid from a liquid. To do this you simply just grab a funnel and some filter paper and pour the solution in. The liquid will be small enough to pass through the funnel but the solid will not be. So as of such, you will get the solid left in the funnel and the liquid in a container that you would be pouring it into.
Describe Crystallisation	Crystallisation is just simply when you put a solution into a bowl and wait overnight for the liquid to evaporate. Once the liquid has evaporated then you have little Crystals of the element remaining.

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