Flashcards
Chemistry Unit 1
Cards in this deck (20)
- 1AtomsAtom: the smallest particle of a chemical element that can exist.
The number of protons determines what element it is.
The number of protons = Number of electrons in a neutral atom. - 2ElementsElement: it's a substance that is made of only one sort of atom.
- 3IsotopesIsotopes are the atoms of an element with different numbers of neutrons. They have the same proton number, but different mass numbers.
- 4Compounds2 or more different elements chemically (bonded) joined together.
- 5MixtureContains 2 or more different elements or compounds that are not chemically bonded
to each other. - 6Models of the atomsPlum pudding model
Nuclear model
modern atom - 7Plum pudding model JJ.ThompsonElectrons of negative charge in a sphere of positive charge.
- 8Rutherford's nuclear modelA small and dense positively charged nucleus.
Electrons surround the nucleus .
Most of the atom is empty space.
- 9Modern modelProtons/Neutrons in nucleus
Electrons orbit on set paths (orbits).
- 10To separate an INSOLUBLE substanceinsoluble: a substance that'll not dissolve
in a solvent. - 11DecantingLiquid is poured out and the solid is left behind
- 12FilteringSolid residue is left, the liquid goes through
the funnel. - 13PanningLiquid is poured off from the top solid stays
in the pan. - 14Separating soluble solidsEvaporation
Distillation
Chromatography. - 15Evaporation(boiling)
Water or liquid evaporates, solid is left behind. - 16DistillationBoiling/ evaporation followed by condensation ( to get the liquid ).
- 17ChromatographyUsed to separate small amounts of substances
depending on their solubility.
- 18Saturated solutionsA solution in which no more of the solute can dissolve.
- 19MagnificationUse a formula triangle:
Put your finger over the one you want and read off the formula.
- 20Converting between unitsGiga
Mega ↓
Kilo
by 1000 0 × by 1000
Mili
↑ Micro
Nano
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- Year 10 Chemistry Flashcards on Chemistry Unit 1, created by Yamz 2222 on 18/11/2017.
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- Yamz 2222
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