1. CHEMISTY brain teasers science 9

2. IONIC COMPOUNDS
WRITE THE FORMULA
MAGNESIUM CHLORIDE

3. What’s the difference? List 3
Chemical vs. physical changes

4. Chemical or Physical change?
Mentos and coke
Roasting marshmallows
Burning wood
Mixing kool-aid
Digesting a sandwich

5. IONIC COMPOUNDS
WRITE THE FORMULA
IRON (III) OXIDE

6. Dissolving salt in water
Vocabulary ….
Dissolving salt in water
What’s the solute?
What’s the solvent?
What is happening when something dissolves?

7. IONIC COMPOUNDS
WRITE THE NAME OF:
Fe2O3

8. IONIC COMPOUNDS
WRITE THE formula for:
POTASSIUM SULPHATE

9. IONIC COMPOUNDS
WRITE THE FORMULA OF:
AMMONIUM PHOSPHATE

10. COVALENT Bonding
What kind of bond is it?
Give an example…

11. Double trouble…….
WRITE THE FORMULA FOR
Iron (lll) sulphite
How many of each element?
Fe= S= O=

12. Why is chemistry important? Or why does matter matter?
jobs that use chemistry List 5

13. What is an alloy?
Why use an alloy? (for example gold and silver alloy)

14. COMPOUNDS
WRITE THE FORMULA FOR
Sodium chloride
What kind of bond would
It have?

15. MATCHING
Solution granola Suspension NaCl Pure substance salt water Element H2O Compound salad dressing Mechanical mixture oxygen

16. BOHR DIAGRAMS-100
DRAW THE BOHR DIAGRAM FOR:
AN ATOM OF CARBON

17. Periodic table…..
Which family is the most reactive?
Why?

18. THOSE TRICKY GUYS
WHAT IS THE NAME OF:
Co3(PO4)2

19. THOSE TRICKY GUYS
WHAT IS A METALLOID?
2 OTHER NAMES FOR
METALLOID

20. THOSE TRICKY GUYS
WHY CROSS THE CHARGES TO GET A CHEMICAL FORMULA?

21. THOSE TRICKY GUYS
Total charge of Magnesium in magnesium phosphate

22. THOSE TRICKY GUYS
What is a family which is MOST unreactive?

23. MATCHING again
melting solidification boiling liquid to gas sublimation solid to gas freezing gas to liquid condensation solid to liquid

24. BOHR DIAGRAMS - 200
DRAW THE BOHR DIAGRAM FOR:
SODIUM ION

25. Huh?
What is the atomic mass of an element?

26. Silicon atom
What is the correct notation?
What is the number of
Protons =
Neutrons =
Electrons =

27. Silicon ion
What is the correct notation?
number of
Protons =
Neutrons =
Electrons =

28. BOHR DIAGRAMS
DRAW THE BOHR DIAGRAM FOR:
Sulfur
The Sulfur Ion

29. Huh?
WHAT DO YOU HAVE TO REMEMBER WHEN NAMING A COMPOUND WITH A POLYATOMIC ION AND A MULTIVALENT ION?

30. Huh?
HOW DOES AN IONIC COMPOUND FORM?

31. Huh?
WHAT IS A COVALENT bond?

32. BOHR DIAGRAMS
DRAW THE BOHR DIAGRAM FOR:
OXYGEN atom and ion

33. Done!
LIST 3 COVALENT COMPOUNDS