Terminology & Revision
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a solution? | A liquid which has a solute dissolved into the solvent. It will be clear and perhaps coloured ie instant coffee
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| What is a solvent? | A liquid in which solutes can be dissolved
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| What is a solute? | A substance that is dissolved in a solvent to make a solution ie cordial
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| What is a mixture? | It is a combination of 2 or more substances which can be separated ie soup
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| What does 'soluble' mean? | It is a substance that can be dissolved in a liquid
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| What does 'insoluble' mean? | A substance that will not dissolve in liquid ie sand
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| What does 'concentrated' mean? | It contains a large amount of solute ie strong cordial
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| What does 'saturated' mean? | The liquid ( solvent) can't dissolve any more solute ie milo
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| How do you 'dilute' something? | Adding liquid
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| What is a 'suspension'? | A mixture of gas or liquid and an insoluble substance. The insoluble substance will sink to the bottom ie orange juice if the liquid is kept still.
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| What is 'sediment'? | Insoluble substances which settle at the bottom of suspensions ie orange juice pulp
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| 'Filtration' means what? | The process of separating suspended particles from fluid through a filter
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| What is 'residue'? | Any material left on a filter after a liquid passes through after being filtered
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| What is a 'colloid'? | A colloid with droplets of one liquid spread evenly through another liquid ie mayonnaise. The mixture will always look cloudy.
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| What is 'decanting'? | Pouring liquid off the top when sediment has settled at the bottom of the container ie tea leaves
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| What does 'sieving' mean? | Particles of different sizes are placed in a container with holes, allowing the smaller particles to fall through
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| What does a centrifuge do? | Spins the mixture and the heaviest substances move to the outside of the spinning container leaving the lighter substances in the centre
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| What is 'distillation'? | A mixture is heated so one substance evaporates. This vapour is collected and condenses into a liquid
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| What happens when water evaporates? | It heats and becomes a mist
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| What happens when water condenses? | It cools and becomes a liquid
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| What is left when salt lakes dry up and crystallisation occurs? | Salt
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| What does a filter do? | It blocks larger particles but allows smaller particles to pass through.
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| What is gravity separation? | The separation of heavier particles by shaking or spinning them ie panning for gold
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| How can you separate sawdust and sand? | Flotation
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| How can you most easily separate bits of iron or copper and mud | Magnetic separation
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| Which is the most effective separation method? Centrifuging, decanting or filtration | Centrifuging
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| Straining pasta is a form of? | Filtering
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| Panning for gold is a form of... | Decanting
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| The only way to get the solvent (liquid) back from a solution is... | Distillation (evaporation and condensation)
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| The easiest way to get the solute (thing dissolved) from a solution is... | Evaporation (can also use distillation)
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| Describe the changes of state (solid, liquid gas) in distillation | Water is liquid, is heated to become steam (gas), cools (condensation) in the condensing chamber to become water (liquid) which drips into the beaker
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| Food colouring and water. Which is the solute? | Food Colouring
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| Food colouring and water. Which is the solvent? | Water
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| Which separation method is the best at separating blood? | centrifuging
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| After centrifuging, the bottom layer is.... | heaviest
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| paints inks and dyes are most easily separated using which method? | chromatography
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Created by:
nicolenixon
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