Year 9 / Grade 9 • Daily Science Drill

Atomic Structure

Use atomic models, elements, ions and periodic organisation.

8 questions • 200-question rotating bank • 25 different sets before a full cycle repeats

8Questions
200Question bank
0Best score
📖 60-second Quick Read

Atomic Structure

Atoms contain subatomic particles. Atomic number identifies an element by proton number, and ions form when electrons are gained or lost.

What to remember

  • Protons have positive charge.
  • Electrons have negative charge.
  • Neutrons are neutral.
  • Atomic number equals proton number.
  • Ions have unequal proton/electron numbers.

Key words

proton — positively charged subatomic particle
electron — negatively charged subatomic particle
neutron — neutral subatomic particle
atomic number — number of protons
ion — charged atom or group
How to use this drill: review the short notes when learning, then close them on later attempts and practise from memory. The rotating bank delays a full set repeat for 25 attempts on the same browser.

What this Year 9 / Grade 9 science drill practises

Use atomic models, elements, ions and periodic organisation. This daily drill is designed as short retrieval practice rather than a complete course. It can be used for school revision, homework, warm-ups or independent practice.

  • Protons have positive charge.
  • Electrons have negative charge.
  • Neutrons are neutral.
  • Atomic number equals proton number.
  • Ions have unequal proton/electron numbers.

International use: the topic is organised by broadly useful school-level progression. Exact curriculum timing and terminology can vary between countries, states and schools.

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