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Quiz von 10jonty.bird, aktualisiert more than 1 year ago
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Erstellt von 10jonty.bird
vor mehr als 11 Jahre
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Frage 1
Frage
Alkali metals react with non-metals to form __________.
Antworten
-
Noble gases
-
Acids
-
Macromolecules
-
Hydroxides
-
Ionic compounds
-
Insoluble Bases
-
Hydrogen
Frage 2
Frage
Ionic compounds are held together by ___________.
Antworten
-
Strong ionic bonds
-
Strong intermolecular forces
-
Very strong Covalent Bonds
-
Delocalised electrons
-
Strong Electrostatic forces
Frage 3
Frage
Ionic bonds dissolve in water.
Antworten
- True
- False
Frage 4
Frage
When atoms share electrons they form __________.
Antworten
-
Ionic bonds
-
Covalent bonds
-
Strong intermolecular forces
-
Electrostatic forces
-
Macromolecules
Frage 5
Frage
Simple molecules do not conduct electricity because . . . .
Antworten
-
They have delocalised electrons.
-
The intermolecular forces are too weak.
-
The molecules have no overall charge.
-
There are no layers.
-
They are too large.
Frage 6
Frage
When melted ionic compounds conduct electricity.
Antworten
- True
- False
Frage 7
Frage
What function of Nitinol makes it particularly useful in braces.
Antworten
-
It is a shape memory alloy.
-
It is not broken down by saliva.
-
It can be controlled by remote as to where the teeth move.
-
It is very hard so the teeth cannot move.
Frage 8
Frage
Not really a proper question just useful info in the explanation. RAM stand for Relative Molecular mass
Antworten
- True
- False
Frage 9
Frage
Gas chromatography uses ________, to help identify the substance.
Antworten
-
The speed of the substance in column
-
The time taken to travel through the column
-
The size of the substance
-
The mass of the substance
-
The number of substances
Frage 10
Frage
The gas chromatography column can be linked to a(n) __________, to identify the substances leaving the column.
Antworten
-
Microscope
-
Oscilloscope
-
Set of accurate scales
-
Mass spectrometer
Frage 11
Frage
Soluble salts can be made from:
Antworten
-
Halogens
-
Metals
-
Acids
-
Insoluble bases
-
Oxygen
-
Alkalis
-
Water
Frage 12
Frage
Insoluble salts can be made by mixing appropriate solutions of _______ so that a(n) __________ is formed.
Antworten
-
Acid(s)
-
Bases(s)
-
Hydroxide(s)
-
Alkali(s)
-
Precipitate
-
Gas
-
Ions
-
sodium hydroxide
Frage 13
Frage
Alkalis: (tick the correct statements)
Antworten
-
Have a pH lower than 7
-
Turn UI green, blue and red.
-
Are also known as insoluble bases
-
Are also known as soluble hydroxides
-
Are also known as insoluble hydroxides
-
Can come in the form metal oxides
Frage 14
Frage
At the negative electrode, positively charged ions ________ electrons, this is known as _________.
Antworten
-
Gain
-
Lose
-
Create
-
Neutralisation
-
Oxidation
-
Reduction
Frage 15
Frage
At the positive electrode, _________ charged ions _______ electrons, this is known as _________.
Antworten
-
Negatively
-
Positively
-
Gain
-
Lose
-
Neither decrease nor increase electrons
-
Oxidisation
-
Reduction
-
Neutralisation
Frage 16
Frage
In electrolysis the positive electrode is usually made of ____________
Antworten
-
Francium
-
Steel
-
Copper
-
Boron
-
Iron
-
Carbon
-
Charcoal
-
Plastic
-
Wood
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