5 Written questions
5 Matching questions
- a compound breaks apart into two or more products
- How do you determine the volume of a sample?
- uncombined form of one element displaces (and replaces) another element in a compound, forming a new compound
- The following changes indicate what? Lose of electrons, compound increases in oxygen content, or compound decreases in hydrogen?
- a reactants are oxidized
- b Single Displacement or Single Replacement Reactions Ex. A+BC=AC+B
- c Decomposition Reaction Ex. C -->A+B
- d Difference between mass of empty container and container plus sample
- e One reactant loses electrons (becomes more positive))
5 Multiple choice questions
- when two substances, usually in their elemental forms, combine to form a compound.
- peroxides and superoxides
- the curved liquid surface on a graduated cylinder
- Reactant gains electrons (becomes more negative)
5 True/False questions
What compound have the oxidation number of +3? → Aluminum and gallium
What is the most electronegative element? → Oxygen
Are metals or nonmetals LESS electornegative? → Metals
What properties depend on the quantity of the sample? Ex. height, weight, mass and size → intensive properties
What electronegative element, combined with any other element has an oxidation number of -1 → Aluminum and gallium