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"The science exam tomorow..."

Hey Ho, tomorow the bulk of the GCSE exams sets in, so as a confidence booster (or a last minute revision aid) i am making this thread, post your science question's and we can answer eachothers, testing how ready we are. I'll start the questions...

CHEMISTRY

1) Name the three parts of an atom

2) What is a compound?

3)What properties (name at least 2) do Ionic compounds have?

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BIOLOGY

1) What are the four components that make up blood?

2) Explain Gene therapy

3) What are the products of photosynthisis?

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PHYSICS

1) What are the two types of waves? (in earth quakes)

2) What was Gallelao's (sp?) therory?

3) What is static electricity caused by?

um.. it's biology tomorrow so..

BIOLOGY

1) What are the four components that make up blood?

plasma, red blood cells, white blood cells and platlets

2) Explain Gene therapy

like what part of it? how it contain the genotype of someone's attributes? hair colour eyes colour?

3) What are the products of photosynthisis?

Carbon Dioxide + Water ====> (sunlight and chlorophyll) Oxygen,water and energy
6CO2+ 12H2O ====> 602+ 6h2o+ c6h12o6

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that should be it...

I am more worried about Geography!! :S

?

Oxygen is made of oxygen?

Isn't water H2O?

yea, i think thats oxygen is H2o (1 part hydrogen and 2 parts oxygen) and water is O2( 2 parts oxygen)...

The product of photosynthesis is oxygen, no?

I dunno the symbol though.

Yea El Robin got it right second time round.

The rival wrote:
> Oxygen.

Is that H2o and water O2...

Oxygen.

3) What are the products of photosynthisis?


Im not too sure, but is it sun light, water and air...

Or what I said...

As appose to a mixture which isn't chemically bound.

A compound is two elements mixed that have reacted