AS Level Chemistry - 1.1 Particles in the atom and atomic radius

**This Powerpoint specifically uses the Cambridge AS Level Chemistry Syllabus (9701) and covers all criteria for – Unit 1.1 Particles in the atom and atomic radius.
**

Students will be able to -

1 understand that atoms are mostly empty space surrounding a very small, dense nucleus that contains protons and neutrons; electrons are found in shells in the empty space around the nucleus

2 identify and describe protons, neutrons and electrons in terms of their relative charges and relative masses

3 understand the terms atomic and proton number; mass and nucleon number

4 describe the distribution of mass and charge within an atom

5 describe the behaviour of beams of protons, neutrons and electrons moving at the same velocity in an electric field

6 determine the numbers of protons, neutrons and electrons present in both atoms and ions given atomic or proton number, mass or nucleon number and charge

7 state and explain qualitatively the variations in atomic radius and ionic radius across a period and down a group

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a free pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
**

Bring your Cambridge AS Level Chemistry lessons to life with our expertly designed teaching resources. Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.