Elements in Group 1 of the periodic table e.g. Lithium (Li), sodium (Na), potassium (K)
Alkali metal
2 of 22
The historical term that was used before relative atomic masses were defined in the 20th century
Atomic weight
3 of 22
The energy needed to break a particular chemical bond
Bond energy
4 of 22
A long glass tube with a tap at one end and markings to show volumes of liquid, used to add precisely known amounts of liquid to a solution in a conical flask below it
Burette
5 of 22
The point in a titration where the reaction is complete and titration should stop
End point
6 of 22
An atom or group of atoms that give organic compounds their characteristic reactions
Functional group
7 of 22
Water in which it is difficult to form a lather with soap. It contains calcium and/or magnesium ions which react with the soap to produce scum
Hard water
8 of 22
A group of related organic compounds that have the same functional group, e.g. the molecules of the homologous series of alcohols all contain the –OH group
Homologous series
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A water softener which works by replacing calcium and magnesium ions with sodium or hydrogen ions, removing the hardness
ion exchange column
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An arrangement of elements in order of their atomic numbers, forming groups and periods
Periodic table
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Hard water whose calcium and/or magnesium ions are not removed when the water is boiled, thus remaining hard
Permanent hard water
12 of 22
A glass tube used to measure accurate volumes of liquids
Pipette
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The insoluble substance formed when temporary hard water is boiled
Scale
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The precipitate formed when soap reacts with calcium and/or magnesium ions in hard water
Scum
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A cleaning agent that does not produce scum when used with hard water
Soapless detergent
16 of 22
Water containing no dissolved calcium and/or magnesium salts, so it easily forms a lather with soap
Soft water
17 of 22
Acids that ionise completely in aqueous solutions
Strong acid
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Hard water which is softened when it is boiled
Temporary hard water
19 of 22
A method for measuring the volumes of two solutions that react together
Titration
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Element from the central block of the periodic table. It has typical metallic properties and forms a coloured compound
Transition element
21 of 22
Acids that do not ionise completely in aqueous solutions
Weak acids
22 of 22
Other cards in this set
Card 2
Front
Elements in Group 1 of the periodic table e.g. Lithium (Li), sodium (Na), potassium (K)
Back
Alkali metal
Card 3
Front
The historical term that was used before relative atomic masses were defined in the 20th century
Back
Card 4
Front
The energy needed to break a particular chemical bond
Back
Card 5
Front
A long glass tube with a tap at one end and markings to show volumes of liquid, used to add precisely known amounts of liquid to a solution in a conical flask below it
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