chemistry Flashcards
what’s a solid
molecules are set in a regular pattern.
limited space
what’s a liquid
molecules flow easily around.
what’s a gas characteristic
molecules have lots of space to move around.
describe changes of state:
solid to liquid= melting
solid to gas= sublimation
liquid to solid= freezing
liquid to gas= evaporation
gas to liquid= condensation
gas to solid= deposition
what’s a cooling curve
A cooling curve of a substance is a graph of the variation of the temperature with time as it is allowed to cool.
describe how you would filtrate dirty water
using a funnel and filter paper, you would pour the liquid an insoluble solid through it, leaving a solid/ residue in the paper and the filtered liquid in the bottle.
what’s chromatography?
chromatography is the process to separate a mixture into its components.
what’s simple distillation?
To separate a solvent from a solution, from 2 separate mixtures
What is fractional distillation?
to separate two more liquids, which have different boiling points
What is crystallisation?
The process of producing crystals from a solution by evaporating the solvent
name the sub atomic particles
neutrons electrons protons
who is mendeleev
he created a version of the periodic table of elements
what’s the periodic table arrangement?
non metals - top right
metals- left and middle
what’s the greenhouse effect
Gases in the atmosphere ( carbon dioxide) traps heat similar to the glass roof of a greenhouse.
what’s climate change
long term effects in temperature primarily due to burning fossil fuels.
