Chemistry Practice Test – Particulate Nature of Matter

Complete the table above by replacing C with correct figure among the options listed below.

If two isotopes of X, mass number 18 and 20 are in ratio 1:2, then the relative atomic mass of X is _____

A. 18.33    B. 18.61    C. 19.00    D. 19.33

When an atom gains an electron, It becomes ______  

(a) cation     (b) complex ion     (c) negatively charged    (d) chemically inactive.

Which of the states of matter contains particles that are held firmly together by some forces of cohesion?

(a) Gaseous state    (b) Solid state    (c) Liquid state      (d) none of the above

Complete the table above by replacing A with correct figure among the options listed below.

A. 9     B. 12     C. 11     D. 7