1. Which term is used for atomic forms in an element that has different masses?
- Ion
- Molecule
- Cation
- Isotopes
Show Answer
Answer: Option D. Isotopes
2. What is equivalent to 1 atomic mass unit?
- One-twelfth of the mass of a helium atom
- One-twelfth of the mass of a carbon-12 atom
- The total weight of a proton
- Half the weight of a neutron
Show Answer
Answer: Option B. One-twelfth of the mass of a carbon-12 atom
3. What gives us information about an atom’s mass number?
- Total number of Electrons
- “Atomic Number” of an element
- “Valency” of an atom
- Total number of Protons and Neutrons in its nucleus
Show Answer
Answer: Option D. Total number of Protons and Neutrons in its nucleus
4. Which element has Tritium as one of its isotopes?
- Hydrogen
- Helium
- Carbon
- Oxygen
Show Answer
Answer: Option A. Hydrogen
5. Which among the following equals 1 atomic mass unit?
- 1.67377 x 10^-17 kilogram
- 1.67377 x 10^-31 kilogram
- 1.67377 x 10^-27 kilogram
- 1.67377 x 10^-23 kilogram
Show Answer
Answer: Option C. 1.67377 x 10^-27 kilogram