Team 1
0
Team 2
0
Teams
Name
Score
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Loading
15
×
Exothermic reactions ...
always have a - enthalpy change
are always reversible
are not reversible
always have a + enthalpy change
Oops!
Show
Check
Okay!
Check
15
×
The anomalous density of ice (less than liquid water) is best described due to ...
London dispersion forces
Hydrogen bonding between molecules
The low polarity of the molecules
Permanent dipole-permanent dipole attractions
Oops!
Show
Check
Okay!
Check
15
×
Which of the following compounds is likely to be most ionic?
Potassium fluoride
Sodium fluoride
Caesium fluoride
Lithium fluoride
Oops!
Show
Check
Okay!
Check
×
banana
Go to last place!
Oops!
×
star
Double points!
Okay!
×
gift
Win 25 points!
Okay!
×
baam
Lose 10 points!
Oops!
×
seesaw
Swap points!
Oops!
×
rocket
Go to first place!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
15
×
Which of the following is required for a successful collision?
the correct geometry
energy lower than the activation energy
a high concentration
a large surface area
Oops!
Show
Check
Okay!
Check
15
×
The enthalpy change for a reaction is calculated from.....
the difference between the reactant and product energy
the difference between the reactant and highest peak energy
the difference between the product and highest peak energy
the energy of the highest peak
Oops!
Show
Check
Okay!
Check
15
×
Which of the following is least likely to dissolve in petrol (C8H16)?
NaCl
I<sub>2</sub>
C<sub>5</sub>H<sub>12</sub>
CO<sub>2</sub>
Oops!
Show
Check
Okay!
Check
15
×
The bonding and structure in the compound silicon dioxide is ....
metallic
monatomic
covalent molecular
covalent network
Oops!
Show
Check
Okay!
Check
15
×
The bonding and structure in the element carbon (as graphite) is ....
metallic
monatomic
covalent molecular
covalent network
Oops!
Show
Check
Okay!
Check
×
baam
Lose 15 points!
Oops!
×
star
Double points!
Okay!
×
rocket
Go to first place!
Okay!
×
banana
Go to last place!
Oops!
15
×
Which of these forces are weakest?
ionic bond
hydrogen bond
Permanent dipole - permanent dipole
London dispersion
Oops!
Show
Check
Okay!
Check
15
×
When reactants lose energy to form products, which of the following must be true?
the reaction is endothermic
the reaction is exothermic
the activation energy is high
the activation energy is very low
Oops!
Show
Check
Okay!
Check
15
×
The bonding and structure in the element helium is ....
covalent molecular
metallic
monatomic
covalent network
Oops!
Show
Check
Okay!
Check
15
×
The activation energy for a reverse reaction is calculated from.....
the difference between the reactant and product energy
the difference between the reactant and highest peak energy
the difference between the product and highest peak energy
the energy of the highest peak
Oops!
Show
Check
Okay!
Check
15
×
Which of the following does not increase across a period?
atomic size
ionisation energy
nuclear charge
strength of London dispersion force
Oops!
Show
Check
Okay!
Check
×
Restart
Review
Join for Free
;
Your experience on this site will be improved by allowing cookies.
Allow cookies
