The nuclear atom and alpha scattering Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. How many neutrons are in ²³⁸₉₂U?
- A. 92
- B. 146
- C. 238
- D. 330
2. What is the best explanation for most alpha particles passing straight through the gold foil?
- A. The nucleus is negative
- B. Most of the atom is empty space
- C. The foil absorbs them
- D. Electrons attract them
3. A very small number of alpha particles were scattered through more than 90°. What does this show?
- A. Electrons are heavy
- B. Atoms are solid
- C. The positive charge and most of the mass are concentrated in a tiny nucleus
- D. Alpha particles are neutral
4. Which statement about the plum pudding model is correct?
- A. Positive charge is concentrated in a nucleus
- B. Electrons orbit a nucleus
- C. Positive charge is spread through the atom with electrons embedded in it
- D. Atoms are indivisible
5. An isotope has 17 protons and 18 neutrons. What is its nucleon number?
- A. 35
- B. 17
- C. 18
- D. 1