Chemistry Quiz
Question Number 1
Who first discovered radioactivity
A. Pierre & Marie Curie
B. Becquerel
C. Cavendish
D. Scheele
E. Priestley
Question Number 2
Which element is the most reactive?
A. Bromine
B. Chlorine
C. Iodine
D. Flourine
E. Astatine
Question Number 3
The purest form of silica is
A. Flint
B. Opal
C. Quartz
Question Number 4
Water is temporarily hard because it contains
A. Calcium hydrogentrioxocarbonate(iv)
B. Calcium trioxocarbonate(iv)
C. Magnesium trioxocarbonate(iv)
Question Number 5
Which of the following is not a chemical change
A. Dissolution of metals
B. Rusting of iron
C. Addition of water to quicklime
D. Fermentation
E. Magnetization