CHEMISTY brain teasers science 9 IONIC COMPOUNDS WRITE

CHEMISTY brain teasers science 9

IONIC COMPOUNDS • WRITE THE FORMULA MAGNESIUM CHLORIDE

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

Chemical or Physical change? 1. Mentos and coke 2. Roasting marshmallows 3. Burning wood 4. Mixing kool-aid 5. Digesting a sandwich

IONIC COMPOUNDS • WRITE THE FORMULA –IRON (III) OXIDE

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

IONIC COMPOUNDS • WRITE THE NAME OF: Fe 2 O 3

IONIC COMPOUNDS • WRITE THE formula for: –POTASSIUM SULPHATE

IONIC COMPOUNDS • WRITE THE FORMULA OF: –AMMONIUM PHOSPHATE

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

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

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

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

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

MATCHING Solution granola Suspension Na. Cl Pure substance salt water Element H 2 O Compound salad dressing Mechanical mixture oxygen

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

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

THOSE TRICKY GUYS • WHAT IS THE NAME OF: Co 3(PO 4)2

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

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

THOSE TRICKY GUYS • Total charge of Magnesium in magnesium phosphate

THOSE TRICKY GUYS • What is a family which is MOST unreactive?

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

BOHR DIAGRAMS - 200 • DRAW THE BOHR DIAGRAM FOR: –SODIUM ION

Huh? • What is the atomic mass of an element?

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

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

BOHR DIAGRAMS • DRAW THE BOHR DIAGRAM FOR: Sulfur The Sulfur Ion

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

Huh? • HOW DOES AN IONIC COMPOUND FORM?

Huh? • WHAT IS A COVALENT bond?

BOHR DIAGRAMS • DRAW THE BOHR DIAGRAM FOR: OXYGEN atom and ion

Done! • LIST 3 COVALENT COMPOUNDS