This is a brief summary of major concepts in general chemistry. Nothing earth-shattering, but the in-class version contains a number of embedded videos, which made that version too big to upload.

1. Chem
Review
Grade 10 MYP Science
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2. KNOW YOUR
TABLE!

3. PERIODICITY:
Patterns
PERIODS
GROUP
S
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4. Chemical
Reactions
• Rearrange matter
• Release or absorb energy
• Depend on reactivity
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5. Rearranging Matter
• Bonding = movement +
use of electrons
• Law of Conservation of
Matter
• neither created nor
destroyed Image: http://people.seas.harvard.edu
• products = reactants
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6. Kinds of chemical
reactions
Synthesis
Decomposition
1x Replacement
2x Replacement
Combustion: burning! CxHy + O2 --> CO2 + H2O

7. SYNTHESIS: building
• Create complex compounds from simpler ones
• A + B → AB
• 8Fe + S → 8FeS
8
• 2Mg + O → 2MgO
2

8. DECOMPOSITI
ON:
• Complex compounds --> simpler ones
breaking down
• CD → C + D
breaking+ O
• 2H O → 2H
2 2
down 2
• BaCl → Ba + Cl
2 2

9. REPLACEMENT: trading
• Single: E + FG --> EG + F
• Mg + 2 H O ---> Mg(OH) + H
2 2 2
• Double: HI + JK --> HK + JI
• Pb(NO ) + 2 KI ---> PbI + 2 KNO
3 2 2 3

10. COMBUSTION: burning!
• Needs oxygen
• Gives off CO , H O, and heat
2 2
• C H + O --> CO + H O
x y 2 2 2
• C H + 12O ---> 10CO + 4H O
10 8 2 2 2

11. ACID-BASE: moving
• Acid + Base --> salt + water
ions
• HA + BOH ---> BA + H O
2
• HBr + NaOH ---> NaBr + H O
2
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12. REACTIVITY: ready to
• Depends on electronegativity + metallic character
react by electron configuration (arrangement)
• Determined
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