Charge and neutrality

Exercise and reference answers

Questions

1. Question

   An atom as a whole is

   Choices

   1. positively charged
   2. negatively charged
   3. electrically neutral

   Correct choice

   electrically neutral

2. Question

   That means it contains equal amounts of

   Choices

   1. positive and negative charge
   2. protons and neutrons
   3. mass and energy

   Correct choice

   positive and negative charge

3. Question

   In Rutherford's model, the positive charge sits

   Choices

   1. spread through the atom
   2. in a tiny nucleus
   3. on the electrons

   Correct choice

   in a tiny nucleus

4. Question

   Bohr's postulates apply to

   Choices

   1. every atom
   2. molecules only
   3. hydrogenic single-electron atoms

   Correct choice

   hydrogenic single-electron atoms

Explanation