Cada pregunta de este test está cronometrada.
Electrons are tiny but they cover a lot of space.
Elements in a group have the same number of outer electrons.
Which group contains noble gases?
Group 2.
Group 4.
Group 7.
Group 0.
Elements in the same group have different properties.
What is the definition of ionic bonding?
A shared pair of electrons.
The transfer of electrons.
Name a giant ionic structure.
Sodium Chloride.
Graphite.
Name the physical method you would use to separate a mixture of liquids with different boiling points:
Fractional Distillation.
Simple Distillation.
What is an isotope?
Different forms of the same element, with the same number of neutrons but different number of protons.
Different forms of the same element, with the same number of protons but different number of neutrons.
What is electric current?
The flow of electrons or ions.
A sea of delocalised electrons.
Metals are weak conductors of heat.