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Glossary for Science > Ch 5 - Separating Mixtures > Flashcards

Ch 5 - Separating Mixtures Flashcards

1
Q

Dissolved

A

When a substance vanishes from sight into tiny little particles.

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2
Q

Solution

A

A mixture of solute dissolving into a solvent.

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3
Q

Solute

A

The substance that is dissolved into the solvent

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4
Q

Solvent

A

The substance that does the dissolving.

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5
Q

Aqueous Solutions

A

A solution when water is the solvent.

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6
Q

Soluble

A

The substance is able to dissolve.

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7
Q

Insoluble

A

A substance that cannot be dissolved in liquid.

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8
Q

Chemical Reaction

A

A chemical change is when one or more new chemicals are produced.

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9
Q

Concentrated

A

A solution with a large amount of solute.

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10
Q

Saturate

A

Unable to dissolve any more solute.

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11
Q

Dilution

A

The process to add more solvent to make it less concentrated.

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12
Q

Pressure

A

Push or squeeze on an object

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13
Q

Sediment

A

Solid that goes to the bottom of the liquid.

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14
Q

Suspension

A

When the solid is suspended in mid air.

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15
Q

Filtration

A

When you pour a liquid through tiny holes that water can go through, but the solids remain at the top.

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16
Q

Filtrate

A

The filtered product of a suspension, the liquid is the filtrate in this case.

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17
Q

Residue

A

The solid left above the filter paper after the liquid is filtered.

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18
Q

Decanting

A

After centrifuging, when you pour out the liquid.

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19
Q

Sieving

A

Separating particles of different sizes by letting the smaller ones fall through holes in a container

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20
Q

Separating Funnel

A

A pear shaped glass container with a tap, used to separate the liquids from solids.

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21
Q

Centrifuge

A

Separating mixtures by rotating the cylinder very fast and the heavier parts move to the outside.

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22
Q

Colloid

A

A mixture that has very tiny particles that is able to spread evenly into another substance.

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23
Q

Emulsion

A

A colloid with droplets that spread evenly through another.

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24
Q

Distillation

A

A separating technique that heats the substance and makes it evaporate, usually used to separate solutions,

25
Q

Evaporates

A

Change of state from liquid to gas.

26
Q

Water Condenser

A

A test tube inside of a test tube that has water flowing along the outside of the inner test tube cooling down the fog in order to change the gas back into liquid.

27
Q

Condenses

A

Changes a state of gas to liquid.

28
Q

Distillate

A

The pure substance that is condensed at the end of the process.

29
Q

Distilled Water

A

Pure water that is collected by condensing steam.

30
Q

Crystallisation

A

When the solvent evaporates from the solution and the solute is left as crystals.

31
Q

Reverse Osmosis

A

A technique used when a fluid moves under pressure through a membrane from a high solute concentration to a lesser concentration, used to purify water.

32
Q

Osmosis

A

The process when using a membrane and one constituent can’t pass.

33
Q

Sustainable

A

When resources are stable and are not going to disappear for a long time.

34
Q

Paper Chromatography

A

Method of separating a mixture with different colours. The liquid soaks rough the paper and carries he mixture with it. Some substances are carried faster than others than other substances and are separated along paper.

35
Q

Plasma

A

A yellowish liquid that is obtained when centrifuged

36
Q

White Blood Cells

A

A cell that fights off sicknesses in your body, it requires a special filtration to separate it from the red blood cells.

37
Q

Platelets

A

The corks of the body that stop wounds from bleeding, can be centrifuged to separate platelets from the plasma.

38
Q

Red Blood Cells

A

The red blood cells help people spread oxygen around the body, which keeps them alive.

39
Q

Circumference

A

The outer boundary of a circular property.

40
Q

Sewerage

A

A system of drains and pipes that takes away sewage from a property.

41
Q

Sewage

A

The mixture of water and other substances that sends it into the sewerage system.

42
Q

Environment

A

Where living and non living things live and interact.

43
Q

Septic Tank

A

A sewerage treatment system that is place underground in backyards.

44
Q

Bacteria

A

The smallest life planet on Earth, they are major causes of infection and disease.

45
Q

Suspended

A

Hanging, not falling

46
Q

Filter

A

A device that lets liquid pass but particles too big remain at the top.

47
Q

Floatables

A

Substances that are less dense than water so they can float.

48
Q

Contaminated

A

Describes a useful substance that contains one or more other substances that affect its use.

49
Q

Flocculation

A

The process when you add a chemical to a suspension to make the particles weighted and fall to the bottom.

50
Q

Alum

A

A chemical added to a suspension to get the particles to fall to the bottom.

51
Q

Flocs

A

Particles heavy enough to fall to the bottom, not being able to float.

52
Q

Froth Floatation

A

The process used to separate mixture of mineral particles by adding a substance that floats to the top with one of the minerals attached.

53
Q

Gravity Separation

A

Like a centrifuge, shaking or spinning them, the heavier particles float to the bottom.

54
Q

Pollution

A

The introduction of harmful substances or products into the environment.

55
Q

Forensic Scientists

A

People who use methodical gathering and analysis of scientific evidence.

56
Q

Recycling

A

Treating items that are not biodegradable so that new products can be made out of them.

57
Q

Landfill

A

The area left beside to dump the rubbish.

58
Q

Manufacturing Processes

A

Process of making new items.

59
Q

Raw Materials

A

Materials before they turn into the final product.

Glossary for Science (8 decks)

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