SCH4C Chapter 2 Chemical Reactions

How many atoms are found in AgNO₃ ?

• 1

• 2

• 3

• 4

• 5

Which elements exist as diatomic molecules?

• tin and lead

• chlorine and phosphorus

• oxygen and carbon

• oxygen and hydrogen

• hydrogen and helium

A skeleton equation is a ______

• balanced chemical equation

• an unbalanced chemical equation

• a net ionic equation

• a word equation

Which type of reaction would you expect to occur between sodium and water?

• double displacement

• decomposition

• synthesis

• single displacement

Which of the following is correct?

• a SD reaction is often the reverse of a DD reaction

• two compounds react in a SD reaction

• two single elements react in a SD reaction

• a D reaction is often the reverse of a S reaction

Which of the following reactants would likely undergo a synthesis (S) reaction?

• Na(s) and Cl₂(g)

• NaBr(aq) and Cl₂(g)

• NaBr(aq) and AgNO₃(aq)

• AgNO₃(s)

• Sn(s) and CuSO₄(aq)

Which metal is the most reactive?

• aluminum

• copper

• sodium

• gold

• iron

Which group of elements tend to form soluble ionic compounds?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

A net ionic equation

• is not balanced

• includes spectator ions

• does not include spectator ions

• shows no compounds as ions

A precipitate

• forms in all DD reactions

• forms in some DD reactions

• is soluble in water

• is an aqueous (aq) compound