OSSD registeration exam Chemistry

(1) The atom as a whole is neutral.

• (a) True

• (b) False

(2) In an atom, the particles with a negative charge are protons and the particle

      with no charge are neutrons.

• (a) True

• (b) False

(3) Neutral atoms must contain the same number of neutrons as protons.

• (a) True

• (b) False

(4) The atom with duplet structure is hydrogen.

• (a) True

• (b) False 

(5) In the periodic table, the _____ are called periods.

• (a) vertical columns 

• (b) horizontal rows

     (6) Noble gas elements are neither electropositive nor electronegative.

• (a) True

• (b) False

(7) Atoms form covalent bonds by gaining or losing electrons.

• (a) True

• (b) False

(8) Covalent compounds are usually soluble in covalent organic _____.

• (a) solute

• (b) solvents

• (c ) water

(9) The volume of a gas _____ when heated.

• (a) expands

• (b) contracts

• (c ) remains constant

(10) The force acting on unit ____ is the gas pressure.

• (a) length

• (b) area

• (c ) volume