1. Atoms, Elements, and compounds

2. Learning Goals Review what you know about matters
Understand the Particle Theory of Matter
Understand different types of matters

3. What’s the matter?

4. What’s the matter?
Anything that has mass and occupies space

5. Let’s find different types of matter

6. What are matters made up of?

7. Ancient Greeks were curious about this too!
Democritus
c. 460 – c. 370 BC
Meaning “chosen of the people”
Asked “what is everything made of?”
Everything is made up of tiny things are “indivisible”
If we cannot divide something, that must be “atoms” and must be building block of everything
In Greek, the word “Atomos” means indivisible in Greek!

8. https://youtu.be/VdPQwe6gA0Q

9. What are matters made up of?
They are made up of particles and atoms!
The Big Bang Theory created matters and particles, which created the universe….including us!

10. What else do we know about particles?
Kahoot time!

11. The Particle Theory of Matter
#1 All matters are made up of tiny atoms
#2 Each pure substance has its own kind of particles, which is different from the particles of other pure substances
#3 Atoms are always moving
#4 Atoms attract each other
#5 Atoms at a higher temperature move faster than atoms at a lower temperature

12. Matter
Matter
Pure Substance
Mixture

13. Matter Pure Substance Contains only one kind of particles Mixture
Example: Pure water
Mixture
Contains more than one kind of particles
Example: Cup of hot chocolate

14. Matter
Matter
Pure Substance
Mixture
Mechanical Mixture
Solution

15. Mixture Mechanical Mixture (heterogeneous mixture)
Contains more than one kind of particles that can be seen as separate
Example: Water and oil
Solution (homogeneous mixture)
Contains more than one kind of particles but appears as one
Example: Water and food colouring

16. Matter Matter Pure Substance Mixture Element Compound
Mechanical Mixture
Solution

17. Pure Substance Element
Pure substance that cannot be broken down into simpler parts
Example: Aluminum
Compound
Pure substance made of two or more different elements
Example: Table Salt aka. Sodium chloride (NaCl)

18. What’s the difference? Hold on…. Mixture
Contains more than one kind of particles
Compound
Pure substance made of two or more different elements
What’s the difference?

19. Mixtures vs. Compound
Mixtures can be separated into two or more parts by physical methods
Example: filtering, boiling, separating with hands
Compounds are formed by chemical bonds between two different elements and can only be separated chemically
Example: Ionic bonds, Covalent bonds (You will learn these later in the unit!)

20. More on Elements https://youtu.be/VgVQKCcfwnU

21. Before you go! Homework (sorry again….T^T): Page 144: #2, 4