100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
AQA GCSE Chemistry Paper 1 (Triple) £8.66   Add to cart

Exam (elaborations)

AQA GCSE Chemistry Paper 1 (Triple)

 9 views  0 purchase

AQA GCSE Chemistry Paper 1 (Triple) 1. What is the size of an atom's nucleus? Answer: Approximately 0.1 nanometers in diameter 2. Where is the nucleus located within an atom? Answer: At the center of the atom 3. What does the nucleus consist of? Answer: Protons and neutrons 4. What i...

[Show more]

Preview 3 out of 23  pages

  • July 11, 2024
  • 23
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
All documents for this subject (13)
avatar-seller
bestscores1
AQA GCSE Chemistry Paper 1 (Triple)
1. What is the size of an atom's nucleus?



Answer: Approximately 0.1 nanometers in diameter



2. Where is the nucleus located within an atom?



Answer: At the center of the atom



3. What does the nucleus consist of?



Answer: Protons and neutrons



4. What is the charge of a proton?



Answer: Positive



5. What is the charge of an electron?



Answer: Negative



6. What is the mass of an electron?



Answer: Essentially zero



7. What is the charge of a neutral atom?



Answer: Zero

,8. What does the atomic number reveal?



Answer: The number of protons present in an atom



9. What does the mass number indicate?



Answer: The total number of protons and neutrons in an atom



10. Define an element:



Answer: A substance composed of only one type of atom



11. What are isotopes?



Answer: Atoms with the same number of protons but different numbers of neutrons



12. How do compounds form?



Answer: When two or more elements combine chemically



13. What is the composition of compounds formed between metals and non-metals?



Answer: Ions (metal ions and non-metal ions)



14. How do metal atoms behave to form positive ions?



Answer: They lose electrons

, 15. How do non-metals behave to form negative ions?



Answer: They gain electrons



16. What is the composition of compounds formed between non-metals?



Answer: Molecules (formed by sharing electrons)



17. Relative charges:



* Proton: +1

* Neutron: 0

* Electron: -1

what is the nucleus surrounded by? ✔️electrons



what is a balanced equation? ✔️an equation in which each side of the equation has the same number
of atoms of each element and mass is conserved



what are never created or destroyed during a chemical reaction? ✔️atoms



the total mass of reactants = ✔️total mass of products



how can mixtures be separated? ✔️by physical means, such as filtration, crystallization and simple
distillation



who created the key ideas successively about atoms? ✔️dalton thomson, rutherford and bohr



what experiment did Rutherford do? ✔️gold foil

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller bestscores1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £8.66. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67096 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£8.66
  • (0)
  Add to cart