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Chemistry > Separating Techniques - Definitions > Flashcards

Separating Techniques - Definitions Flashcards

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1
Q

Acids (non - metal oxides)

A

Are compounds which have replaceable hydrogen ions.

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2
Q

Base (metal oxides)

A

A substance that can neutralise an acid.

Acid = salt + water

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3
Q

Chemical change

A

New substances are formed

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4
Q

Chromatogram

A

Piece of paper used in chromatography

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5
Q

Chromatography

A

The technique used for separating different soluble dyes

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6
Q

Condenser

A

Equipment which turns gas into liquids

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7
Q

Dissolving

A

When a solid separates and speeds out through a liquid

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8
Q

Evaporation

A

When a liquid is heated and turned into a gas

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9
Q

Filtrate

A

The solution that has been through filter paper and collected in the flask bellow

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10
Q

Filtration

A

The technique used for separating insoluble solids from a liquid

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11
Q

Fractional distillation

A

The technique used to to separate several liquids from each other

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12
Q

Immiscible

A

The term for two liquids which do not mix

Oil and water

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13
Q

Insoluble

A

A solid which does not dissolve in water

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14
Q

Miscible

A

Two liquids which do mix

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15
Q

Mixture

A

Two or more substances which are not chemically combined

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16
Q

Physical change

A

No change of substance, just of physical state

17
Q

Pure substance

A

One element or compound. Precise boiling or melting point.

18
Q

Rate of reaction

A

How quickly the reaction takes place

19
Q

Residue

A

The solid left in the filter paper after filtration takes place

20
Q

RF value

A

In chromatography, distance the dye has travelled divided by the the distance the solute has travelled

21
Q

Saturated solution

A

No more solid can dissolve

22
Q

Separating funnel

A

The piece of equipment used to separate immiscible liquids.

23
Q

Simple distillation

A

Separates a solute from a solvent

24
Q

Solubility

A

Mass of solute that dissolves on 100g of solvent

25
Q

Solubility curve

A

Plot of solubility against the temperature

26
Q

Soluble

A

A solid which does dissolve in water

27
Q

Solute

A

The substance that dissolves in a solvent, forming a solution.

28
Q

Solution

A

A solute dissolve in a solvent

29
Q

Solvent

A

The liquid which dissolves a solute.

Chemistry (20 decks)

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