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Science revision

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damomaja's version from 2015-11-16 23:18

Section

Material world - What's the Matter?

Changes of state

Question Answer
Liquid to solidSolidification
Solid to liquidLiquefaction
Solid to gas/vice versaSublimation
Gas to liquidCondensation
Liquid to gasEvaporation
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Physical and chemical changes

Question Answer
Change to properties e.g. shape/tempPhysical
ReversiblePhysical
Non-reversibleChemical
New substanceChemical
Old substance goneChemical
Heat or light given offChemical
Gas or solid producedChemical
Explosion or burningChemical
SmellChemical
Colour changeChemical
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Test for gasses

Question Answer
OxygenGlowing splint test - if re-ignites it is present
HydrogenPlace a lit splint in a test tube - if a pop sound it is present
Carbon DioxideBlow bubbles in limewater - if cloudy white it is present
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Formula for moleculese

Question Answer
WaterH2O
Carbon DioxideCO2
HydrogenH2
OxygenO2
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Electrons, protons and neutrons

Question Answer
1st shell2 electrons
2nd shell8 electrons
3rd shell8 electrons
4th shellThe rest
# neutronsmass # - atomic #
# protonsmass # - # neutrons
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Physical world - Energy

Types of energy

Question Answer
KineticActive
RadiantActive
SoundActive
ElectricalActive
HeatActive
ElasticPotential
GravitationalPotential
ChemicalPotential
NuclearPotential
MagneticPotential
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Misc about energy

Question Answer
Laws of energy conservationEnergy cannot be created or destroyed, only transformed or transferred.
Energy efficiency %(Useful energy * 100) / Energy input
Measurement for energyJ (Joules)
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Living world - It's Alive!

Parts of a cell

Question Answer Column 3
Cell membraneplant and animalControl what goes in/out of the cell
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