chapter 11 chemical reactions
DESCRIPTION
Chapter 11 Chemical Reactions. Activities and resources. Lab –chemical reactions Workshops TB & Workbooks Animations and games for balancing equations and types of reactions: http://funbasedlearning.com/chemistry/chemBalancer/ques5.htm http://www.youtube.com/watch?v=i-HHvx1VC_8&NR=1 - PowerPoint PPT PresentationTRANSCRIPT
Chapter 11 Chemical Reactions
• Writing Chemical equations
• Balancing Equations
• Classifying reactions
• Predicting the products
• Reactions in aqueous solutions (complete and net ionic equations)
• Predicting the formation of a precipitate
Activities and resourcesLab –chemical reactions
Workshops
TB & Workbooks
Animations and games for balancing equations and types of reactions:
http://funbasedlearning.com/chemistry/chemBalancer/ques5.htm
http://www.youtube.com/watch?v=i-HHvx1VC_8&NR=1
http://www.youtube.com/watch?v=tE4668aarck&feature=related
End Show
Slide 2 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Word Equations
To write a word equation, write the names of the reactants to the left of the arrow separated by plus signs; write the names of the products to the right of the arrow, also separated by plus signs.
Reactant + Reactant Product + Product
11.1
End Show
Slide 3 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Methane + Oxygen Carbon dioxide + Water
(the reaction between methane and oxygen can be described as a combustion reaction.)
11.1
End Show
Slide 4 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
iron + oxygen iron(III) oxide
(the reaction between Fe and O2 to form Fe2O3 can be described as a combination or synthesis reaction)
11.1
End Show
Slide 5 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Chemical Equations
A chemical equation is a representation of a chemical reaction; the formulas of the reactants (on the left) are connected by an arrow with the formulas of the products (on the right).
11.1
End Show
Slide 6 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations11.1
End Show
Slide 7 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
A skeleton equation is a chemical equation that does not indicate the relative amounts of the reactants and products. (i.e. the equation is not yet balanced)
Here is the equation for rusting:
Fe + O2 Fe2O3
How would you balance this equation?
11.1
End Show
Slide 8 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
A catalyst is a substance that speeds up the reaction but is not used up in the reaction.
Without Catalyst With Catalyst
11.1
© Copyright Pearson Prentice Hall
Slide 9 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 10 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 11 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 12 of 37
End Show
Practice Problems for Conceptual Problem 11.1
End Show© Copyright Pearson Prentice Hall
Describing Chemical Reactions
>
Slide 13 of 37
Balancing Chemical Equations
Balancing Chemical Equations
What are the steps in writing a balanced chemical equation?
To write a balanced chemical equation, first write the skeleton equation. Then use coefficients to balance the equation so that it obeys the law of conservation of mass.
11.1
End Show
Slide 14 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Balancing Chemical Equations
A chemical reaction is also described by a balanced equation in which each side of the equation has the same number of atoms of each element and mass is conserved.
11.1
© Copyright Pearson Prentice Hall
Slide 15 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 16 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 17 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 18 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 19 of 37
End Show
Go to following website for balancing chemical equation game:
http://funbasedlearning.com/chemistry/chemBalancer/ques5.htm
Complete worksheet (class handout) and turn in for grading
© Copyright Pearson Prentice Hall
Slide 20 of 37
End Show
Practice Problems for Conceptual Problem 11.2
© Copyright Pearson Prentice Hall
Slide 21 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 22 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 23 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 24 of 37
End Show
© Copyright Pearson Prentice Hall
Slide 25 of 37
End Show
Practice Problems for Conceptual Problem 11.2
End Show© Copyright Pearson Prentice Hall
Slide 26 of 37
Section Quiz
-or-Continue to: Launch:
Assess students’ understanding of the concepts in Section 11.1.
11.1 Section Quiz.
© Copyright Pearson Prentice Hall
Slide 27 of 37
End Show
11.1 Section Quiz.
1. Propane gas reacts with oxygen to produce water vapor and carbon dioxide. Choose the correct word equation for this reaction.
a. propane + carbon dioxide water + oxygen
b. propane + oxygen + water carbon dioxide
c. propane + oxygen + water + carbon dioxide
d. propane + oxygen water + carbon dioxide
© Copyright Pearson Prentice Hall
Slide 28 of 37
End Show
2. Which of the following is a skeleton equation?
a. H2 + CO CH3OH
b. 2H2 + CO CH3OH
c. 2H2 + CO2 CH3OH
d. hydrogen + carbon monoxide methanol
11.1 Section Quiz.
© Copyright Pearson Prentice Hall
Slide 29 of 37
End Show
3. What coefficient for H2SO4 is required to balance the following equation?
Ca3(PO4)2 + ____ H2SO4 3CaSO4 + 2H3PO4
a. 1
b. 2
c. 3
d. 4
11.1 Section Quiz.