Periodic Table and Bohr Diagrams
Metals form positive ions called __________.
Non-metals form negative ions called __________.
Cations
Anions
What is the charge of iron in the compound FeCl3
3+
Give one example of there being a chemical change.
- Difficult to reverse
- Forms a new substance
- Involves energy transformation (ex. hot/cold, light, sound)
List one type of reaction that we learned and give an example of that type of reaction.
**It does not need to be balanced.
Many possible answers.
On a pH scale what numbers would indicate that a substance is an acid? What numbers would indicate that a substance is a base?
Acid: pH < 7
Base: pH > 7
What group has the most reactive metals?
What group has the most reactive non-metals?
Alkali Metals
Halogens
Is N2O3 an ionic or covalent compound?
What is the name?
A covalent compound.
Dinitrogen Trioxide
Describe the Law of Conservation of Mass.
In a closed system, the mass of the reactants will be equal to the mass of the products.
What types of reactions are the following:
1. Silver + Gold (III) Nitrate -> Silver Nitrate + Gold
2. KNO3 -> KNO2 + O2
1. Single Replacement
2. Decomposition
Would an endothermic or exothermic reaction feel warm?
An exothermic reaction because energy is being released to the environment.
List the 7 diatomic molecules.
H2, N2, O2, F2, Cl2, Br2, I2
Write the name or formula for the following compounds:
1. Calcium Nitrite
2. Ag3P
1. Ca(NO2)2
2. Silver Phosphide
Solid sodium metal reacts with liquid water to produce aqueous sodium hydroxide and hydrogen gas.
Write the formula equation.
Na (s) + H2O (l) -> NaOH (aq) + H2 (g)
Write an example of a combustion reaction.
**It does not need to be balanced.
C4H10 + O2 -> CO2 + H2O
List 2 characteristics each for acids and bases.
Acids: Taste sour, wet and burn, foods (citrus, vinegar), react with metals, conductive in aqueous solutions.
Bases: Taster bitter, slippery and burn, cleaners (soap, bleach), do not react with metals, conductive in aqueous solutions.
Explain the characteristics that metalloids share with metals and non-metals.
Shiny like metals. Brittle, non-ductile, and poor conductors of heat and electricity like non-metals.
Write the name or formula for the following compounds:
1. Tetracarbon Octachloride
2. Mn(CrO4)2
3. Ammonium Acetate
1. C4Cl8
2. Manganese (IV) Chromate
3. NH4CH3COO
Balance the following reaction.
C3H7OH + O2 -> CO2 + H2O
2 C3H7OH + 9 O2 -> 6 CO2 + 8 H2O
Determine the type of reaction and predict the products.
Sn(NO2)4 + K3PO4 ->
Double Replacement
Sn(NO2)4 + K3PO4 -> Sn3(PO4)4 + KNO2
What are the names of the following acids:
1. H2CO3
2. HNO2
3. HCl
1. Carbonic Acid
2. Nitrous Acid
3. Hydrochloric Acid
Draw Bohr Diagrams for a Sulfur Atom and Sulfur Ion.
Ms. Johel will draw them on the board :p
Write the name or formula for the following compounds:
1. Magnesium Hydroxide
2. Fe2(SO4)3
3. PbO
4. Carbon Monoxide
1. Mg(OH)2
2. Iron (III) Sulfate
3. Lead (II) Oxide
4. CO
A solid piece of zinc metal is placed in an aqueous solution of copper (II) phosphite and produces copper solids in an aqueous solution of zinc phosphite.
Write the formula equation and balance it.
3 Zn (s) + Cu3(PO3)2 (aq) -> 3 Cu (s) + Zn3(PO3)2 (aq)
Determine the type of reaction, predict the products and balance.
H2CO3 + Sr(OH)2 ->
Acid-Base Neutralization
H2CO3 + Sr(OH)2 -> 2 H2O + SrCO3
Using Ms. Johels beautiful energy diagram on the board, answer the following questions.
1. Is the reaction endothermic or exothermic?
2. Calculate the activation energy.
3. Calculate the change in energy.
4. Does it feel warmer or colder?
1. Exothermic
2. 60 kJ
3. -20 kJ
4. Warmer