Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Protons and electrons are called fundamental particles because they----------
are indivisible
have different charges
are the lightest particles
are found in all matter
Correct answer is D
No explanation has been provided for this answer.
The region around the nucleus where electrons can be located is called?
a spectra
an orbital
a quanta
a field
Correct answer is B
No explanation has been provided for this answer.
The following ions have the same electron configuration except
8O, 12Mg, 13AI, 17CI
CI−
O2−
Mg2+
AI3+
Correct answer is A
No explanation has been provided for this answer.
An element, Q, contains 69% of63Q and 31% of 65Q. What is the relative atomic mass of Q?
63.0
63.6
65.0
69.0
Correct answer is B
No explanation has been provided for this answer.
Potassium trioxonitrate (V) can be obtained from its solution by----------
distillation
evapoartion
crystallization
filtration
Correct answer is C
No explanation has been provided for this answer.