Video segment. Assistance may be required. View this short video clip below to review types of reactions.

Source: Marian Krieger Weber

Interactive exercise. Assistance may be required. Instructions

  1. Use your notes to record your observations for the following activity.

  2. Examine the pictures of celebrity "reactions" and the category of each reaction. Click on the category label to see a definition of that type of reaction.
  3. In your notes, write a statement that explains why each reaction is classified in its category, and then write a chemical equation to show what is occurring. Use the letters A–D to write the chemical equation. To create an arrow representing "yield" in the equation, type two hyphens and a greater-than sign, -->

  4. Beginning with Synthesis Reaction, you can click on the link to check your answer.

Example: Single Replacement Reaction

Photo: Demi Moore and Bruce Willis

+

Photo: Ashton Kutcher
Photo: Ashton Kutcher and Demi Moore
+ Photo: Bruce Willis

Single Replacement Reaction Answer:

The Ashton ion replaces the Bruce ion in the Bruce-Demi compound making an Ashton-Demi compound and a Bruce ion. AB + C → CB + A. (A = Bruce, B = Demi, and C = Ashton)


Synthesis Reaction

Photo: Kevin Bacon
+ Photo: Kyra Sedgewick
Photo: Kevin Bacon and Kyra Sedgewick

After writing an answer in your notes, Interactive popup. Assistance may be required. Check Your Answer Synthesis Reactants, Kevin and Kyra, react to make a Kevin-Kyra compound.
A + B → AB
(A = Kevin and B = Kyra)Close Pop Up


Decomposition Reaction

Photo: Jesse James and Sandra Bullock
Photo: Sandra Bullock
+ Photo: Jesse James

After writing an answer in your notes, Interactive popup. Assistance may be required. Check Your Answer Decomposition The Sandra-Jesse compound breaks apart into the two products of Sandra and Jesse.
AB → A + B
(A = Sandra and B = Jesse)Close Pop Up

Double Replacement Reaction

Photo: Nicole Kidman and Tom Cruise
+ Photo: Katie Holmes
Photo: Keith Urban
Photo: Katie Holmes and Tom Cruise
+ Photo: Keith Urban and Nicole Kidman


Check Your Answer Double Replacement The Nicole-Tom compound and Katie–Keith compound both break apart and recombine to form a Katie–Tom compound and a Nicole–Keith compound.
AB + CD → CB + AD
(A = Nicole, B = Tom, C = Katie, and D = Keith)Close Pop Up


Now look at some actual chemical reactions. Record the type of reaction for each equation your notes.

8 Fe + S8→ 8 FeS

Interactive popup. Assistance may be required.

Check Your Answer

SynthesisClose Pop Up

2 H2O → 2 H2 + O2

Interactive popup. Assistance may be required.

Check Your Answer

DecompositionClose Pop Up

Zn + 2 HCl → ZnCl2 + H2

Interactive popup. Assistance may be required.

Check Your Answer

Single ReplacementClose Pop Up

NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)

Interactive popup. Assistance may be required.

Check Your Answer

Double ReplacementClose Pop Up


Images used above, as they appear, left to right, top to bottom: