5523818
Questão 1
Questão
Isotopes of an element have the [blank_start]same[blank_end] atomic number but [blank_start]different[blank_end] mass numbers
Responda
-
same
-
different
Questão 2
Questão
The relative mass is the [blank_start]average[blank_end] mass of an element compared to an atom of C-12.
Responda
-
average
Questão 3
Questão
A mass spectrometer measures:
Responda
-
Moles
-
Relative masses
-
Shapes of molecules
Questão 4
Questão
Work out the number of moles in 5.10g of Aluminium oxide.
Responda
-
0.0500 moles
-
5 moles
-
0.5 moles
Questão 5
Questão
Percentage yeild =
Responda
-
theoretical yeild/actual yield x 100
-
actual yield/theoritical yield x 100
-
theoretical yield/actual yeild / 100
Questão 6
Questão
Compounds that have water molecules incorporated into them are called water of crystalisation.
Responda
- True
- False
Questão 7
Questão
Methyl orange indicators turn from [blank_start]yellow[blank_end] to [blank_start]red[blank_end] when you add acid to an alkali.
Responda
-
yellow
-
red
Questão 8
Questão
Phenolphthalein turns from [blank_start]red[blank_end] to [blank_start]colourless[blank_end] when you add acid to an alkali.
Responda
-
red
-
colourless
Questão 9
Questão
Shells further away from the nucleus have a lower energy level than the ones closer to it.
Responda
- True
- False
Questão 10
Questão
Orbitals can contain up to [blank_start]2[blank_end] electrons.
Responda
-
2
-
1
-
4
-
3
Questão 11
Responda
-
S orbital
-
P orbital
-
D orbital
Questão 12
Responda
-
S orbital
-
P orbital
-
D orbital
Questão 13
Questão
Electrons fill up the lowest energy sub-shells first.
Responda
- True
- False
Questão 14
Questão
How many electrons does a full p sub-shell contain
Responda
-
2
-
6
-
3
-
10
Questão 15
Questão
Ionic compounds [blank_start]conduct[blank_end] electricity when they are [blank_start]molten[blank_end] or dissolved because the ions are [blank_start]free to move[blank_end].
Responda
-
conduct
-
molten
-
free to move
-
can't conduct
-
liquid
-
solid
-
stationary
-
stuck to each other
Questão 16
Questão
Ionic compounds are often [blank_start]soluble[blank_end] in water.
Responda
-
soluble
Questão 17
Questão
In a covalent bond, the positive nuclei are attracted [blank_start]electrostatically[blank_end] to the shared electrons.
Responda
-
electrostatically
-
ionically
-
intramolecularly
Questão 18
Questão
Dative covalent bonds are when both electrons come from the same atom.
Responda
- True
- False
Questão 19
Questão
Giant covalent structures can conduct electricity.
Responda
- True
- False
Questão 20
Questão
[blank_start]Silicon dioxide[blank_end] is an example of a giant covalent structure.
Responda
-
Silicon dioxide
-
Sodium chloride
-
Magnesium
Questão 21
Questão
Metalic structures contain [blank_start]delocalised[blank_end] electrons.
Responda
-
delocalised
-
no
-
localised
Questão 22
Questão
What is the bond angle on a molecule containing 2 groups of paired electrons around a central atom?
Responda
-
180
-
109.5
-
107
-
120
Questão 23
Questão
What is the bond angle on a molecule that contains 3 groups of paired electrons and 1 group of unpaired electrons?
Responda
-
107
-
104.5
-
109.5
-
120
Questão 24
Questão
First ionisation enthalpy [blank_start]decreases[blank_end] down the group.
Responda
-
decreases
-
increases
-
stays the same
Questão 25
Questão
First ionisation enthalpy [blank_start]increases[blank_end] across a period.
Responda
-
increases
-
decreases
-
stays the same
Questão 26
Questão
Group 2 oxides and hydroxides are [blank_start]bases[blank_end].
Responda
-
bases
-
acidic
-
neutral
Questão 27
Questão
The colour of the flame test for Sodium is:
Responda
-
orange-yellow
-
crimson
-
brick red
-
green
Questão 28
Questão
To test for sulphates you add HCl and [blank_start]Barium chloride[blank_end] and it turns white.
Responda
-
Barium chloride
Questão 29
Questão
Emission spectra contain black lines on a coloured background.
Responda
- True
- False
Questão 30
Questão
Electrons [blank_start]release[blank_end] energy as they [blank_start]drop[blank_end] from a higher energy level to a lower one.
Responda
-
release
-
drop
-
take in
-
jump
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.