Board Exam · Mock test
Atoms and Their Numbers: Chapter Test
The chapter test: 20 questions in 25 minutes on the whole chapter. The particles and models of the atom, electron arrangements and valency, isotopes, isobars and average atomic mass. Every answer has a worked solution that names the usual slip.
ChemistryHigh School (9–10)General
- questions
- 20
- minutes
- 25
- marks
- 20
- right / wrong
- +1 / 0
questions
minutes
marks
right / wrong
The clock starts when you press Begin, after the instructions.
Exam pattern
| Part | Questions | Marks |
|---|---|---|
| All questions | 20 | 20 |
Marking
- Right answer: +1
- Wrong answer: 0, nothing taken away
- Left blank: 0
Time
25 minutes on one clock, from when you begin.
Topics
- Isotopes and Isobars 12
- Electronic Configuration and Valency 5
- Subatomic Particles and Atomic Models 3
Before you start
- It runs like an online exam: one question at a time, with a palette showing what you have answered, skipped or marked for review.
- The clock starts when you press Begin the test, after you have read the instructions, and keeps running even if you reload or leave. At zero, your saved answers are submitted.
- Leaving the test window is recorded, and your teacher can see it.
- Your score, the answers and the explanations show when you finish, with where you stand among everyone who has taken it.