Atoms, The Nucleus And The Mole

9 Questions | By Jthompsn | Updated: Mar 21, 2022 | Attempts: 76

Questions

Settings

Chemistry students, assemble! Today we’ll be having a look at a number of different topics under the overall study of nuclear chemistry, including atoms, the nucleus and the mole. Do you have a firm enough grip on each of these topics? Take this quiz and find out!

Questions and Answers

1.

Which of the following has an odd number of both protons and neutrons?
- A.
  
  Helium-4
- B.
  
  Lithium-7
- C.
  
  Boron-10
- D.
  
  Carbon-13
2.

If you have 5g each of Li, Na, K, and Rb, for which element will you have the largest number of moles?
- A.
  
  Lithium
- B.
  
  Sodium
- C.
  
  Potassium
- D.
  
  Rubidium
3.

If you have three times the mass of carbon as you have helium, which of the following is true?
- A.
  
  You have nearly equal numbers of carbon atoms as helium atoms.
- B.
  
  You have more atoms of carbon.
- C.
  
  You have more atoms of helium.
- D.
  
  You cannot know a relationship between carbon atoms and helium atoms.
4.

In positron emission, what is the resulting change in the nucleus?
- A.
  
  Atomic number increases by 1.
- B.
  
  Atomic number decreases by 1.
- C.
  
  Atomic number decreases by 2.
- D.
  
  Atomic number stays the same.
5.

Who discovered the charge to mass ratio for electrons?
- A.
  
  J.J. Thomson
- B.
  
  Ernest Rutherford
- C.
  
  John Dalton
- D.
  
  Robert Millikan
6.

Which of the following pairs of compounds could be used to explain the law of multiple proportions?
- A.
  
  H2O and H2O2
- B.
  
  CH4 and CO2
- C.
  
  NaCl and KCl
- D.
  
  SO3 and H2S
7.

What experiment resulted to the discovery of the nucleus?
- A.
  
  Gold foil (or alpha scattering) experiment
- B.
  
  Cathode ray tubes
- C.
  
  Oil drop experiment
- D.
  
  Mass spectroscopy
8.

How many electrons are in a magnesium-24 with a charge of 2+?
- A.
  
  10
- B.
  
  12
- C.
  
  14
- D.
  
  22
9.

How are ions formed?
- A.
  
  By gaining or losing electrons
- B.
  
  By gaining or losing protons
- C.
  
  By beta decay
- D.
  
  By positron emission