Study Guide for Chem 11 Review Topics - Weebly



Study Guide for Chem 11 Review Topics

1) Chemical Naming

(i) Naming Compounds: Ionic and Covalent(Molecular)

Use the concept map and data booklet

Ex: H3PO4 : ionic (metal + non metal) : hydrogen phosphate

P2O5 : covalent (non metal + non metal) :

diphosphorous pentoxide

(ii) Writing Formulas: Ionic and Covalent Compounds

Use the concept map and data booklet

Ex : ammonium sulfate: (NH4) 2SO4

carbon tetrafluoride: CF4

2) Balancing Chemical Equations

(i) Chemical Equations Using a Word Equation

Sodium reacts with water to form hydrogen and sodium oxide.

Na + H2O( H2 + Na2O

(ii) Balancing Chemical Equations

2Na + H2O( H2 + Na2O

(iii) Writing Symbols for Phases:

(s): solid (l):liquid (g): gas (aq): aqueous; dissolved in water

NB: water is a liquid H2O (l)

2Na(s) + H2O(l)( H2(g) + Na2O(aq)

3) Significant Figures

1. All non-zero digits are significant

2. Zero’s between non-zero digits are significant

3. All zero’s to the LEFT of the 1st non-zero digit are NOT significant. (called leading zero’s)

4. Zero’s to the RIGHT of the last non-zero digit ARE significant IF the decimal point is SHOWN.

5. Zero’s to the RIGHT of the last non-zero digit (trailing zero’s) ARE NOT significant if there is an UNDERSTOOD decimal point.

6. In Scientific Notation, the exponent part of the number is NOT significant.

For Multiplication or Division:

Answer is rounded to the LOWEST # OF SD’S in the data.

For Addition or Subtraction:

Answer is rounded to the LOWEST # OF DECIMAL PLACES in the data.

4) Molar Masses

Refer to Review Problem Sheets p. 4

MM counts for sig. fig.

MM(H2O): 2(1.0) + 16.0 = 18.0 g/mol (3 sf)

5) Mole Problems

grams ( mole mole ( grams

Refer to Review Problem Sheets p. 4

6) Reaction Rates

moles/s ( grams/s grams/s ( moles/s

Refer to Review Problem Sheets p. 6

Additional Useful Information:

Please go to my website under the Chemistry 11 section. Find the Hebden 11 section and review these units:

Unit II: Significant Figures p.26-40 keys p.254-255

Unit IV: Naming (Inorganic Nomenclature) p.65-76 keys p.263-264

Unit V: Mole Concept p.95-104 keys p.95-104

Unit VI: Balancing Equations p.105-122 keys p.287-290

Unit VII: Stoichiometry p.123-138 keys p.291-299

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