Year 8 Separation Techniques
Cards (60)
- SubstanceSomething made from multiple elements
- MoleculeA group of two or more strongly bonded atoms
- ThermometerUsed to measure temperature
- Key words
- Pure Substances
- Atom
- Element
- Compound
- Molecule
- PureOne type of chemical only
- ImpureMultiple chemicals
- AtomThe smallest thing in the world
- ElementA substance that is made up of one type of atom only
- CompoundTwo or more different elements chemically bonded
- The melting point of sample Z is 30°C
- Sample Z is pure</b>
- Sample I is pure as it has the same fixed melting point
- Honey isn't chemically pure
- MoleculeTwo or more chemically bonded atoms
- PureOne type of substance only
- ImpureA mixture
- A pure substance means one type of compound or element
- CompoundA substance made up of atoms of two or more elements strongly bonded together
- MixtureA substance where the amounts of substances can be changed, the elements keep their properties
- The substances in a mixture are not joined together
- Compounds are made of chemically bonded substances
- Mixture of elements
- Iron-magnetic grey
- Sulphur-non-magnetic yellow
- It is easy to separate the substances in a mixture
- The substances in a mixture keep their own properties
- SolutionA mixture of a liquid with another substance
- SoluteThe solid or gas that dissolves in the solvent
- SolventThe liquid in which a solid or gas dissolves
- DissolvingMixing solute + solvent
- Sugar dissolves in water
- The mass of the products equals the mass of the reactants in a reaction
- SolubilityThe mass of substance that dissolves in 100g of water
- ExcessWhen no more solute will dissolve in a solvent
- Scientists make vaccines which are useful
- InsolubleDoesn't dissolve
- States of matter
- Solid
- Liquid
- Gas (Plasma)
- Filtration1. Crush salts2. Add water3. Stir to dissolve4. Filter5. Evaporate filtrate
- Multiplying and amiding practions
- Adding and subtracting practions
- Multiplying decimals
- Dividing decimab