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Science Quiz - Terminology > Glossary > Flashcards

Glossary Flashcards

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0
Q

What does ‘alum’ mean?

A

The common name for the chemical aluminium potassium sulfate

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1
Q

What does ‘pressure’ mean?

A

Force

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2
Q

What is an aqueous solution?

A

The solution in which water is the solvent

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3
Q

What is centrifuging?

A

Separating a mixture by rotating the container quickly. The heavier parts of the mixture move toward the outside.

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4
Q

What is a chemical reaction?

A

A chemical change in which one or more new chemical substances is produced

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5
Q

What is a colloid?

A

A mixture in which extremely small particles of one substance are spread evenly throughout another substance

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6
Q

What does ‘concentrated’ mean?

A

A solution with a large amount of solute

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7
Q

What is crystallisation?

A

A separation technique that uses evaporation to separate the parts of a solution. The solvent evaporates and leaves behind the solute as crystals

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8
Q

What is decanting?

A

Pouring liquid off the top when sediment has settled to the bottom of the container.

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9
Q

What is dilution?

A

The process of adding more solvent to a solution to make it less concentrated

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10
Q

What does dissolved mean?

A

Describes a substance that has mixed completely with a liquid so that it is no longer visible.

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11
Q

What does distillation mean?

A

A separation technique that uses evaporation to separate substances. The vapour is collected and condenses into a liquid.

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12
Q

What is emulsion?

A

A colloid with droplets of one liquid spread evenly through another

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13
Q

What does evaporate mean?

A

To change a liquid to a gas

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14
Q

What is the filtrate?

A

Liquid that has passed through a filter, that is a porous material through which fluid can pass while suspended particles are retained

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15
Q

What is filtration

A

The process of separating suspended particles from fluid through a filter

16
Q

What is flocculation?

A

The process of adding a chemical to a suspension to create flocs, which settle to the bottom

17
Q

What is insoluble?

A

Describes a substance that will not dissolve in a liquid

18
Q

What is plasma?

A

The yellowish, liquid part of blood that contains water, minerals, food and wastes from cells

19
Q

What are platelets?

A

small bodies involved in blood clotting. They are responsible for healing by clumping together around a wound

20
Q

What are red blood cells?

A

red blood cells: living cells in the blood that transport oxygen to all other living cells in the body. Oxygen is carried by the red pigment, haemoglobin

21
Q

What is reverse osmosis?

A

a technique by which a fluid moves under pressure through a membrane from a high solute concentration to a lesser concentration; used to purify water

22
Q

What does saturated mean?

A

unable to dissolve any more solute

23
Q

What is a sediment?

A

Insoluble substances that collect at the bottom of a container are sediments.

24
Q

What is sewage?

A

a mixture of water and substances that flow from laundries, bathrooms, kitchens and toilets

25
Q

What is sewerage?

A

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

26
Q

What is sieving?

A

separating particles of different sizes by allowing the smaller particles to fall through holes in a container

27
Q

What does soluble mean?

A

describes a substance that will dissolve in a liquid

28
Q

What does solute mean?

A

a substance that is dissolved in a solvent to form a solution

29
Q

What is a solution?

A

a mixture of a solute dissolved in a solvent.

30
Q

What is a solvent?

A

a substance in which a solute dissolves to form a solution

31
Q

What are white blood cells?

A

living cells that fight bacteria and viruses. They are part of the human body’s immune system.

Science Quiz - Terminology (2 decks)

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