Unit 7 of Oxford book Chemistry, 2nd ESO Humanitas Bilingual school.

1. C H E M I S T R Y. 2 E S O . H U M A N I T A S B I L I N G U A L S C H O O L
O X F O R D E D U C A T I O N
7. CHEMICAL CHANGES IN
MATTER

2. PHYSICAL CHANGES

3. CHEMICAL CHANGE

4. WHAT TYPE OF CHANGES ARE THESE?

5. 1. HOW DO YOU KNOW THAT A
CHEMICAL REACTION HAS OCCURRED
• When we notice signs that show that the nature of the
initial substance has changed…

6. 2. HOW DO WE REPRESENT CHEMICAL
REACTIONS?

7. • They are represented by symbols, if they are elements
or formulas, if they are compounds.
• Amazing chemical reactions video

8. 3. THE MASS DOESN’T CHANGE

9. A MODEL THAT EXPLAINS THE LAWS

10. ATOMIC MODEL OF DALTON

11. BALANCING CHEMICAL EQUATIONS
• Link to a simulator
• Click to run
video

12. ACTIVITIES

13. 4. MASS BALANCE IN CHEMICAL
REACTIONS

14. ACTIVITIES

15. 5. ENERGY AND RATES IN CHEMICAL
REACTIONS

16. THE RATE OF A CHEMICAL REACTION

18. 6. INDUSTRIAL CHEMISTRY AND THE
ENVIRONMENT

20. COMPLETE THE OUTLINE OF THE UNIT