Remember:

1
Remember

• Write the correct formulas first (check those
  charges!)
• Balance the equation
• Change ONLY the coefficients, NOT the formulas

2

• Iron reacts with sulfuric acid to form iron (II)
  sulfate and hydrogen gas.
• Azomethane (CH3NNCH3) decomposes to form ethane
  and nitrogen gas at 297C.

3

• Carbon monoxide reacts with chlorine gas to form
  phosgene (COCl2).
• Manganese (II) iodide decomposes when exposed to
  light to form manganese and iodine.

4

• Dinitrogen pentoxide reacts with water to produce
  nitric acid.
• Magnesium reacts with titanium(IV) chloride to
  produce magnesium chloride and titanium.

5

• Carbon reacts with zinc oxide to produce zinc and
  carbon dioxide.
• Bromine reacts with sodium iodide to form sodium
  bromide and iodine.

6

• Phosphorus trichloride reacts with chlorine gas
  to produce phosphorus pentachloride.
• Phosphorus reacts with bromine to produce
  phosphorus tribromide.

7

• Calcium hydride reacts with water to form calcium
  hydroxide and hydrogen gas.
• Sulfuric acid (H2SO4) reacts with potassium
  hydroxide to produce potassium sulfate and water.

8

• Propane reacts with oxygen gas to produce carbon
  dioxide and water.
• Benzene reacts with oxygen gas to produce carbon
  dioxide and water.

9

• Exothermic reaction chemical reaction that
  releases heat.
• Endothermic reaction chemical reaction that
  absorbs heat.

10
Exo- Endothermic
11
Chemical reaction types

• Synthesis
• Combustion
• Decomposition
• Single-replacement
• Double replacement

12
Synthesis reaction

• Two or more reactants form a single product.
• A B ? AB

13
Combustion Reaction

• A substance reacts with oxygen and releases
  energy as heat light
• metal O2 ? metal oxideCxHy O2 ? CO2 H2O

14
Decomposition reaction

• A compound is broken down into two or more
  smaller compounds or elements
• AB ? A B

15
Single Replacement Reaction

• An uncombined element displaces an element that
  is part of a compound
• A BX ? AX B

16
Double Replacement Reaction

• Ions from 2 different compounds replace each
  other AX BY ? AY BX

17
The active ingredient in many antacids is calcium
carbonate. Write the reaction that occurs when
calcium carbonate reacts with hydrochloric acid
(stomach acid).
18
Activity Series (p.288)

• A list ordering the reactivity of elements
• one for metals hydrogen
• one for halogens.