100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Grade 9 Chemistry £8.66   Add to cart

Exam (elaborations)

Grade 9 Chemistry

 4 views  0 purchase

Grade 9 Chemistry 1. Define Atom. - Answer: An atom is the fundamental and smallest unit of a chemical element, composed of three subatomic particles: protons, neutrons, and electrons. 2. Explain Atomic Radius. - Answer: Atomic radius refers to the average distance from the center of an atom...

[Show more]

Preview 2 out of 11  pages

  • July 10, 2024
  • 11
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
All documents for this subject (2)
avatar-seller
bestscores1
Grade 9 Chemistry
1. Define Atom.



- Answer: An atom is the fundamental and smallest unit of a chemical element, composed of three


subatomic particles: protons, neutrons, and electrons.




2. Explain Atomic Radius.



- Answer: Atomic radius refers to the average distance from the center of an atom's nucleus to its


electrons in the outermost orbital.




3. What is Boiling Point?



- Answer: Boiling point is the temperature at which a liquid changes to vapor, such as water boiling at


100°C under standard conditions.




4. Describe Binary Compound.



- Answer: A binary compound consists of two different chemical elements, often forming ionic bonds.

, 5. Define Chemical Change.



- Answer: Chemical change involves the irreversible rearrangement of atoms in one or more


substances, resulting in the formation of new substances with altered chemical properties. For example,


the rusting of iron is a chemical change.




6. Explain Chemical Property.



- Answer: A chemical property is a characteristic of a substance that becomes evident during chemical


reactions, involving changes in composition or identity. For instance, combustibility, which determines if


a material can catch fire and burn, is a critical chemical property.




7. What does Combustibility refer to?



- Answer: Combustibility describes the ability of a substance to ignite and burn, such as the highly


flammable nature of gasoline vapor.

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