@leponline viruses have always been immune to antibiotics. Antibiotics do not work against viruses!!
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GCSEScience
376 posts
GCSEScience
@GCSEScience_
Providing key revision tweets for all aspects of GCSE Science. RT to help your friends revision. Tweet questions to reinforce understanding.
Se unió Mart 2015
10 Siguiendo233 Seguidores
..and application required. Whether you did three, six or nine exams well done to everybody. Enjoy your summer.
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That's it. All done. Well done to everybody. Science GCSEs can't be compared with any other in terms of amount of knowledge, understanding..
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@callingthetw @HaygroveScience if you scroll down the tweets to 19/05 you will see a full explanation and assistance
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GCSEScience retuiteado
@GCSEScience_ YEAR11!! Ice creams on sale after mass tomorrow to raise money for St Catherines!! Bring in some extra pennies!! :)
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Will contain full information on each topic followed by past paper questions for that topic. Test yourself.
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@leeza2799 vegetable oil has a higher boiling point than water. Petrol has a boiling point of 95C.
They are not enzymes.
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Some tricky parts to C1 - Fuel Oil question and suspension of limestone on H. Nothing in there to purposely confuse you like previous exams.
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@LivGrimshaw viscous is a word to describe a thick liquid. (Think Gloopy being a less scientific word) less viscous means it isn't as thick.
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Nitrogen oxides are produced at very high temps and Nitrogen reacts with Oxygen.
Sulfur Dioxide can be produced if fuel has impurities.
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COMBUSTION:
Complete - only produces CO2 and H2O
Incomplete - produces CO2, H2O, CO and C
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Fractional Distillation
Crude Oil heated (vaporised into a gas) and evaporates
Condenses inside the column
At different temperatures
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The central block of the periodic table is called the TRANSITION METALS
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Atoms in the same group have the same number of electrons in their outer shell.
Atoms in the NOBLE GASES have a full outer shell.
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TEST FOR UNSATURATION:
Add BROMINE WATER (ORANGE)
If it goes colourless then it means the substance you have added it to is UNSATURATED.
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TEST FOR CARBON DIOXIDE:
Bubble the gas through limewater and if it turns cloudy then its is CO2.
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@Tarun99Kumar n represents any number. Notice how bonds of polymer go through the brackets and the n has moved
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