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Chemistry General Knowledge Multiple Choice Quiz
Can you answer these chemistry multiple-choice general knowledge questions?
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Last updated: September 26, 2021
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| First submitted | September 26, 2021 |
| Times taken | 259 |
| Average score | 70.0% | Report this quiz | Report |
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1.
How many electrons does a single oxygen atom have (oxidation state 0)?
6
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7
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8
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9
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Oxygen is element number 8, so has 8 electrons.
2.
Which of the halogens (group 7(17)) is solid under standard conditions (0 °C / 32 °F, 100 kPa / 1 bar)?
Fluorine
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Chlorine
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Bromine
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Iodine
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Fluorine and Chlorine are gasses, Bromine is liquid and Iodine is solid.
3.
What do you call an atom that has more protons than electrons?
Cation
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Isotope
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Anion
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Element
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If an atom has more protons than electrons it has a net positive charge, which is referred to as a cation (pronounced cat-ion)
4.
Which hazard symbol means oxidising?
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(a) Flammable, (b) Corrosive, (c) Oxidising, (d) Harmful to the environment
5.
If you fill a glass to the brim with ice water and the ice melts, what will happen?
The glass will over flow as the ice melts
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The level of the water in the glass will remain unchanged as the ice melts
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The water level will drop slightly as the ice melts
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Water is less dense as a solid, so as it melts it occupies less space, so the water level will decrease.
6.
Which is not a nobel gas?
Radium
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Krypton
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Xenon
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Neon
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Radium is a group 2 element. Radon is a similarly named element that is a nobel gas.
7.
Which of these items of glassware is called a Buchner flask?
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8.
The pH scale describes how acidic or basic a substance is. Which of these pH values would be considered acidic?
1
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7
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14
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The pH scale ranges from 0 to 14. 7 is neutal pH, less than 7 is acidic and greater than 7 is basic/alkaline.
9.
Which element is diamond made from?
Silicon
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Carbon
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Oxygen
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Calcium
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10.
Which gas has the highest proportion in the atmosphere?
Oxygen
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Carbon Dioxide
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Nitrogen
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Ozone
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Nitrogen makes up 78%, oxygen takes up 21%, carbon dioxide takes up about 0.04% and ozone takes up about 0.00006%
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