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Chemistry General Knowledge Multiple Choice Quiz

Can you answer these chemistry multiple-choice general knowledge questions?
Quiz by Moomin14
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Last updated: September 26, 2021
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First submittedSeptember 26, 2021
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Average score70.0%
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1. How many electrons does a single oxygen atom have (oxidation state 0)?
6
7
8
9
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
Chlorine
Bromine
Iodine
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
Isotope
Anion
Element
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?
(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
The level of the water in the glass will remain unchanged as the ice melts
The water level will drop slightly as the ice melts
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
Krypton
Xenon
Neon
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?
8. The pH scale describes how acidic or basic a substance is. Which of these pH values would be considered acidic?
1
7
14
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
Carbon
Oxygen
Calcium
10. Which gas has the highest proportion in the atmosphere?
Oxygen
Carbon Dioxide
Nitrogen
Ozone
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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