Flashcards
Chemistry topic 1: Atomic structure & Periodic table
Cards in this deck (21)
- 1atomthe smallest possible piece of an element
- 2elementA substance in which all atoms have the same atomic number
- 3isotopeatoms that have the same number of protons but different number of neutrons
- 4moleculetwo or more atoms bonded together
- 5compondtwo or more different atoms bonded together
- 6mixtureat leats two different elements or componds together. can be sperated easily.
- 7nucleusthe center of the atom. protons + neutrons
- 8protonpositive charge. found in nucleus
- 9neutronno charge. found in necleus
- 10elecrtonnegative charge. found in shells
- 11atomic massprotons + neutrons
- 12atomic numberthe smaller number
- 13work out number of protonsatomic number
- 14work out number of electronsatomic number
- 15work out number of neutronsdifference between atomic mass and atomic number
- 16chromotographyused to seperate a mixture of dyes and inks
- 17filterationused to seperate insoluble solids from liquids
- 18evaporationused to seperate a soluble salt from solution. the solution is heated strongly in an evaporating basin until crystals are left.
- 19crystallisationused to seperate a soluble salt from solution. the solution is heated gently in an evaporating basin until crystals are formed; liquid is filtered out.
- 20simple distillationis used to seperate a liquis from a solution (water and ink).a condenser is used to cool hot gas until it forms a liquis
- 21fractional distillationused to seperate a mixture with different boiling points.
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- Key Stage 4 Chemistry Flashcards on Chemistry topic 1: Atomic structure & Periodic table, created by khadeeja tahier on 09/02/2022.
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- khadeeja tahier
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