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Exercise "Infinitely small", created by baboune16 (a free exercise to learn English):
Results of the 546 people who have taken this test:
Average mark: 66 / 100 Share
Latest member with a 100/100 (perfect mark): icare29 / FRANCE, on Sunday 18 July - 11:00:
"always interesting to redo this kind of test thanks a lot"
They got a perfect mark
Stats (546 candidates)
Question 1 passed: 68.9 %
* have an electric charge which is used as a standard unit of charge for subatomic particles called the elementary charge.
Question 2 passed: 58.1 %
* are massless, so they always move at the speed of light in vacuum.
Question 3 passed: 79.7 %
Water is a simple * consisting of one oxygen atom bonded to two hydrogen atoms.
Question 4 passed: 74.5 %
An * is an atom that has more electrons than protons, and so has a negative charge.
Question 5 passed: 68.5 %
The * is a small region consisting of neutrons and protons at the centre of an atom.
Question 6 passed: 59.5 %
The * are the result of collisions between gaseous particles in the atmosphere with particles released from the sun's atmosphere.
Question 7 passed: 59 %
Sodium chloride NACL is an *, better-known as table salt.
Question 8 passed: 44.9 %
In Physics, a charged * is a particle charged with an electric charge, for instance proton or electron.
Question 9 passed: 72.5 %
A * is a machine that uses electomagnetic fields to propel charged particles to very high energies and speeds.
Question 10 passed: 59 %
* can be artificially generated by heating a neutral gas or subjecting it to a strong electromagnetic field.
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