My students have difficulty identify the different types of chemical reactions. I use this worksheet after ... I discuss each type of chemical reactio...
MAIN Idea There are four types of chemical reactions: synthesis, combustion, decomposition, and replacement reactions. ... Chapter 9 • Chemical Reactions 281
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Worksheet: Writing and Balancing Chemical Reactions 1. Balance the following equations and indicate the type of reaction as formation, decomposition, single
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SCH3U- R.H.KING ACADEMY CHEMICAL REACTIONS WORKSHEET Name: W2 B) SYNTHESIS A + B AB During a synthesis reaction, two or more
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BODY SYSTEM CHALLENGE. NAME. Thirty-one terms related to the human body systems are hidden in the puzzle. Find each word and then write it on a line with its correct system. T. Trimpe 2002 http://sciencespot.net/. SKELETAL: 1. 2. 3. DIGESTIVE: 1. 2.
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Oxidation-Reduction Reactions Oxidation-reduction reactions or redox reactions are reactions in which electrons are transferred from one atom or molecule to another
Chemical Reactions
Name ___________________________
1. Watch the video and then complete the chart. Type of Reaction
Equation
Definition
____ + ____ → ____
Synthesis
____ → ____ + ____
Decomposition
____ + ____ → ____ + ____
Single Replacement
____ + ____ → ____ + ____
Double Replacement
Colors: A = Red, B = Blue, C = Green, D = Yellow 2. Use colored pencils to circle the common atoms or compounds in each equation to help you determine the type of reaction it illustrates. Use the code below to classify each reaction. S = Synthesis
D = Decomposition
O2 → P4O10
______
P +
______
HgO →
______
Cl2 + NaBr →
______
Na + Br2
______
HgO
______
KClO3 →
______
SR = Single Replacement
Hg +
→
O2 NaCl +
Br2
NaBr
+ Cl2 → HgCl + O2 KCl +
BaCl2 + Na2 SO4 →
O2
DR = Double Replacement
MgO
Mg + O2
______
Al2O3
______
H2 + N2 → NH3
______
CuCl2 + H2S →
______
C + H2
______
S8
+
NaCl + BaSO4
T. Trimpe 2010
→
______
http://sciencespot.net/
→
Al + O2
→
F2 →
CuS + HCl
CH4 SF6
Chemical Reactions
ANSWER KEY
1. Watch the video and then complete the chart.
Teacher notes on next page!
Colors: A = Red, B = Blue, C = Green, D = Yellow 2. Use colored pencils to circle the common atoms or compounds on each side of the equations to help you determine the type of reaction it illustrates. Use the code below to classify each reaction. S = Synthesis S ______
D ______
P +
D = Decomposition
HgO →
Hg +
S
Na + Br2
SR
HgO
D
KClO3 →
DR
BaCl2 + Na2 SO4 →
______
______
______
→
______
D
O2
Cl2 + NaBr →
______
S
O2 → P4O10
SR R
______
SR = Single Replacement
______
NaCl +
Br2
DR
NaBr
______
+ Cl2 → HgCl + O2 KCl +
S
______
O2
Al2O3
→
→
MgO
Al + O2
H2 + N2 → NH3 CuCl2 + H2S → C + H2
S
S8
______
T. Trimpe 2010
Mg + O2
S
______
NaCl + BaSO4
DR = Double Replacement
+
→
F2 →
CuS + HCl
CH4 SF6
Note: SO4 is a polyatomic ion.
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Teacher Notes: My students have difficulty identify the different types of chemical reactions. I use this worksheet after we have already discussed balancing equations to explore the differences between synthesis, decomposition, single replacement, and double replacement reactions. A PowerPoint presentation is also available for use on a SmartBoard or other interactive whiteboard device. If you do not have access to this technology, you might consider printing the individual slides on transparencies and project them using a standard overhead projector. To start the lesson, the students watch a movie about chemical reactions. The "Physical Science Series: Chemical Reactions" movie is available on United Streaming if you have a subscription. A PowerPoint for this lesson is available at http://sciencespot.net/Media/ChemReactions.ppt. After the movie, I discuss each type of chemical reaction and have the students complete the chart. We also add letters and colors in the third column to help them focus on what happens in each equation by comparing the reactants and products. For #2, the students use colored pencils to circle the atoms on each side of the reaction. They use the same color for each atom to help them see what happens and then classify each using the code listed. NOTE: If they have not already completed the Balancing Equations worksheet on my website, you can have them balance each equation after they are done.
