4.4 Types of Chemical Reactions

Which substance(s) is/are the reactants?  (Check all that apply)

• 

• 

• 

Which substance(s) is/are the reactants in this reaction?  Check all that apply.

• H₂O₂

• H₂O

• O₂

What is another common feature of all combustion reactions? (choose TWO correct answers)

• They produce heat

• They make things colder

• They are exothermic

• They are endothermic

On the reactant side, what is the single element?

• The Cu

• The Ag

• The AgNO₃

• The Cu(NO₃)₂

Notice the pattern in this DOUBLE Replacement reaction.  Which statement is true?

• There are two sets of compounds on both sides of the arrow.

• There is a single element and a compound on both sides of the arrow.

Is KI an element or a compound?

• element

• compound

In this reaction, the potassium, K, switched places with which substance?

• the Pb

• the NO₃

• the I