C3A Quiz

The basis for the modern periodic table was drawn up by:
1. Newlands
2. Octaves
3. Mendeleev
4. Dalton
Which one of these was a problem for the Mendeleev periodic table?
1. Groups were numbered in Roman numerals
2. There were repeating characteristics in the table.
3. There were blanks
4. Some elements shared spaces with other elements where there were no chemical similarities
Which group is the correct one for the Alkali Earth Metals
1. I
2. II
3. III
4. IV
The group numbers represent:
1. the number of protons in the nucleus
2. the number of electrons in the outer shell
3. the total number of electrons.
4. nothing. The elements are put in the groups for convenience.
On the right of the periodic table we find Groups VI and VII. Which one of these is the best description of elements in these groups?
1. They are non-metals
2. They are all poisonous and bad for the environment.
3. They conduct electricity.
4. They are all gases.
Group 0 elements are called:
1. The alkali gases
2. The noble gases
3. The greenhouse gases
4. The terminal gases
Which is the correct statement about the Group 0 gases?
1. They burn readily with oxygen
2. They exist as molecules of two or three atoms.
3. They are all very unreactive.
4. They can form positive or negative ions, depending on the reaction.
The Lanthanides and Actinides are radioactive metals that have their source in:
1. Deep level mines
2. Violent chemical reactions
3. Nuclear reactors
4. Meteorites
Francium is an alkali metal. It is radiactive and does not last long enough to be tested in the chemistry lab. If it could, which one of these would be its reaction with water?
1. It would explode.
2. It would fizz about gently
3. It would fizz and catch fire.
4. It would not react.
Which one of these is the correct reason for caesium to be so reactive?
1. It holds on to its outer shell electrons tightly, so that when they are removed, there is a lot of energy.
2. Electrons from the inner shells get involved in reactions, which is quite unusual.
3. It melts at low temperatures.
4. Its outer shell electrons are very easily removed.
Which one of these is the correct statement about the Halogens?
1. They lose up to 7 outer shell electrons when they react.
2. The reactivity increases as we go down the group
3. They gain one electron in reactions to obtain noble gas structure.
4. They form acid hydroxides
In transition metals, chemists pay a lot of attention to the second-outermost shell. What is the maximum number of electrons that can be accommodated in this shell?
1. 2
2. 8
3. 24
4. 32
Which one of these is a correct trend across the periods for the transition metals?
1. The melting points decrease.
2. They get more reactive
3. They become less dense
4. The number of electrons in the outer shell increases.
A strong acid is:
1. one that has covalently bound molecules in it.
2. one that dissociates completely into ions
3. any acid that is very concentrated.
4. any acid that accepts pairs of electrons
When an acid dissociated, the hydroniumion is produced. Which one of these is the correct formula?
1. H2O+
2. H3O+
3. H3O-
4. H2O2+