5 Written questions
5 Matching questions
- Reactions that releases heat to their surroundings
- the tendency of an atom in a bond to attract shared electrons
- What are the exceptions for oxygens oxidation number not to be -2 but -1?
- What is the name of the mixture used in some commercially available diabetes test kits?
- a peroxides and superoxides
- b electronegativity
- c Benedict's reagent (Cu2+)
- d Reactant gains electrons (becomes more negative)
- e Exothermic Reactions
5 Multiple choice questions
- when two substances, usually in their elemental forms, combine to form a compound.
- intensive properties
- The net charge on the species
- Difference between mass of empty container and container plus sample
- the oxidized species
5 True/False questions
What is the menisus? → One reactant loses electrons (becomes more positive))
a slightly dissociate compound fromed from double displacement or double replacement reactions → Precipitate
uncombined form of one element displaces (and replaces) another element in a compound, forming a new compound → Double Displacement or Double Replacement Reaction Ex. AB+CD=AD+CB
The following changes indicate what? Gain electrons, compound decreases in oxygen, or compound increases in hydrogen → reactants are reduced
When does oxygen usually have a -2 charge? → Oxidation-Reduction or Redox Reaction