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State Of Matter
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What is the difference between carbon and diamond?
carbon soft and good conductor, diamond hard and cannot conduct electricity
example of giant molecular
silicon(IV) oxide, graphite and diamond
example of simple molecular lattices
iodine, buckminsterfullerene and ice
Why is an alloy stronger than pure metals
because in alloy there is another atom that interupt and make it stick together so the cannot slide very easily
What is alloy
MIxture of two or more metal with a non metals
What is giant ionic structure
compounds with ionic lattice
What is the difference between vaporization and boiling?
vaporization under temperature of boiling point
The changes from gases to liquid?
condensation
The changes from liquid to gas?
vaporization
What happen when we cool a liquid?
lose kinetic energy, force kinethic energy increases , particles change to solid
What happens when we heat a solid?
energy transfer and particles vibrate more, forces attraction weaken and solid changes to liquid
A flask volume of 2 dm3 was found to contain 5,28 of a gas. The pressure in the flask was 200 kpa and the temperature was 20 C. calculate the relative molecular mass of the gas?
32,2
a flask of volume 5 dm3 contained 4 g of oxygen. calculate the pressure exerted by the gas at a temperature of 127 C
83,1
calculate the volume by 0.5 mol of carbondioxide at pressure of 150 kPa and a temperature of 19 C ?
8,088 dm3
what is the formula of general gases equation?
pv=nRT
What is pressure?
collisions between the gas molecules and the walls of the container?
The idea that molecules in gases are in constant movement is called?
kinethic theory of gases
Fixed shape and volume, touching each other and in regular arrangement
What this state of matter?
Particles are mostly arranged randomly, have limited movement from place to place
What this state of matter?
Have no fixed shape or volume
What this state of matter?
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