Question

When Coach Kwan notices that a player is getting tired, she takes out the tired player and substitutes a fresh player. Which type of chemical reaction does this best model?

replacement
decomposition
synthesis
oxidation


Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?

synthesis
decomposition
oxidation
replacement



When explaining chemical reactions to a friend, Brianna models a reaction by combining ingredients to make a cake. Which type of chemical reaction is Brianna most likely explaining?

synthesis
decomposition
polymerization
replacement



What else is produced during the combustion of propane, C3H8?







H2O
C3H8
O2
C3H8O2



Which clue can be used to identify a chemical reaction as a replacement reaction?

The reaction has two reactants with ions that seem to switch places.
The reaction has a single reactant that changes into two or more products.
The reaction involves oxygen reacting with a hydrocarbon and giving off heat.
The reaction involves a single product forming from two or more reactants.


Andre is predicting the products of chemical reactions. In one reaction, a hydrocarbon is the only reactant. What is the best prediction and explanation of this reaction?

Two new compounds form as the hydrocarbon undergoes a synthesis reaction.
Carbon dioxide and water form because the hydrocarbon undergoes a combustion reaction.
A polymer forms because the hydrocarbon joins with itself in a polymerization reaction.
Oxides form because the hydrocarbon combines with oxygen in an oxidation reaction.



What is produced during the replacement reaction of Ba(NO3)2 and Na2SO4?

2BaNa + 2NO3SO4
2NaNO3 + BaSO4
NaNO3 + BaSO4
BaNa2 + (NO3)2SO4

Answer 1

1) replacement

2) replacement (double replacement / metathesis)

3) synthesis

4) H2O

5) The reaction has two reactants with ions that seem to switch places.

6) Carbon dioxide and water form because the hydrocarbon undergoes a combustion reaction.

7) 2 NaNO3 + BaSO4 (BaSO4 is the precipitate)