Radioactivity & Atomic Physics
T
Structure of the atom
Build the core idea from scratch with gentle steps and lots of hints.
Combined Science · Beginner
5
questions · ~4 min · 3 hints each (−5 pts)
Confidence tracking, 3-tier hints and instant feedback.
What you'll learn
Each question helps you build key knowledge and skills.
- 1Atoms are made of protons and neutrons in a central nucleus, with electrons orbiting around it.
- 2Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.
- 3The atomic number is the number of protons, and the mass number is protons plus neutrons.
- 4The nucleus is tiny but contains almost all of the atom's mass.
Question mix
A mix of question types to build your skills.
- Multiple choice×3
- True / False×1
- Short answer×1
Different question types help you think in different ways.
How it works
A simple 3-step process
- 1
Rate your confidence
Tell us how sure you feel before answering. It helps us understand your starting point.
- 2
Use hints if stuck
Get up to 3 helpful hints per question. Each hint costs 5 Treasure Points.
- 3
See what went wrong
Get instant feedback with clear explanations, so you can learn and improve.
Ready when you are
This takes about 4 minutes.