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Summary Unit 1 Pearson edexcel Btec applied science level 3 extended diploma

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Unit 1 Pearson edexcel Btec applied science level 3 extended diploma quick and easy summary revision notes. All topics summarised and made simple from Topic A-E. I hope you find this useful. Good luck in your exam!

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BTEC Applied Science Level 3 – Unit 1 Revision Pack

Clear, Simple & Exam-Focused
Qualification: Pearson Edexcel




-Sarah Garrouch Girón

, Topic A: Periodicity and Properties of Elements

Atomic Structure
Key Definitions

●​ Atom = smallest part of an element
●​ Proton = positively charged particle
●​ Neutron = no charge
●​ Electron = negatively charged particle
●​ Atomic number = number of protons
●​ Mass number = protons + neutrons
●​ Isotope = atoms of the same element with different numbers of neutrons




Must-Know Facts

●​ Electrons are arranged in shells (2,8,8)
●​ Outer shell electrons determine reactivity
●​ Atoms are neutral (protons = electrons)




Common Mistakes

●​ Mixing up atomic number and mass number
●​ Forgetting electrons equal protons in a neutral atom




Exam Question

Q: Define an isotope (2 marks)​
A: -Atoms of the same element

-With different numbers of neutrons




Periodic Table Trends
Key Definitions

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Btec Applied Science Level 3 Extended Diploma
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