Jeopardy Types of Chemical Reactions Energy of Reactions Analyzing Data Balancing Equations Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy All about Chemical Reaction

$100 Question from C1 The breakdown of water molecules into hydrogen and oxygen molecules is an example of this kind of change.

$100 Answer from C1 What is a chemical change? Back to Jeopardy

$200 Question from C1 The overall process of respiration is similar to this type of reaction

$200 Answer from C1 What is a combustion reaction? Back to Jeopardy

$300 Question from C1 1.4Fe  2Fe 2 O 3 2.2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O 3.NH 4 + NO 3  N 2 O + H 2 O This equation shows a synthesis reaction.

$300 Answer from C1 What is Equation 1? Back to Jeopardy

$400 Question from C1 Reaction A: N 2 + O 2 + energy  2NO Reaction B: CH 4 +2O 2  CO 2 +2H 2 O+energy Reaction C: H 2 +F 2  2HF +energy Reaction D: 6CO 2 +6H 2 O+energy  C 6 H 12 O 6 +6O 2 List the exothermic reaction(s)

$400 Answer from C1 What are Reactions B and C? Back to Jeopardy

$500 Question from C1 The type of reaction and balanced form of this equation. C 2 H 8 +O 2  CO 2 +H 2 O

$500 Answer from C1 Back to Jeopardy What is combustion reaction of C 2 H 8 +4O 2  2CO 2 + 4H 2 O?

$100 Question from C2 Absorbs energy and decreases energy best describes this type of reaction.

$100 Answer from C2 What is an endothermic reaction? Back to Jeopardy

$200 Question from C2 The energy needed to break chemical bonds in reactants and form chemical bonds in products.

$200 Answer from C2 What is bond energy? Back to Jeopardy

$300 Question from C2 Reaction A: N 2 + O 2 + energy  2NO Reaction B: CH 4 +2O 2  CO 2 +2H 2 O+energy Reaction C: H 2 +F 2  2HF +energy Reaction D: 6CO 2 +6H 2 O+energy  C 6 H 12 O 6 +6O 2 In reaction A, this is how the bond energies of the products compare with the bond energies of the reactants.

$300 Answer from C2 What is the bond energies of the products is less than the bond energies of the reactants? Back to Jeopardy

$400 Question from C2 Reaction A: N 2 + O 2 + energy  2NO Reaction B: CH 4 +2O 2  CO 2 +2H 2 O+energy Reaction C: H 2 +F 2  2HF +energy Reaction D: 6CO 2 +6H 2 O+energy  C 6 H 12 O 6 +6O 2 These reactions would most likely cause a decrease in temperature.

$400 Answer from C2 What are reactions A and D? Back to Jeopardy

$500 Question from C2 Energy is ___________ in an exothermic reaction.

$500 Answer from C2 What is released? Back to Jeopardy

$100 Question from C3 The substances always present at the beginning of a chemical reaction

$100 Answer from C3 What are reactants? Back to Jeopardy

$200 Question from C3 In a chemical reaction, the mass of the products is always_____________________.

$200 Answer from C3 What is equal to the mass of the reactants? Back to Jeopardy

$300 Question from C3 To balance a chemical equation, you can change these.

$300 Answer from C3 What are coefficients? Back to Jeopardy

$400 Question from C3 These are examples of physical and chemical changes that occurred during the goop lab.

$400 Answer from C3 What is: Physical changes: mixing water and Glue, food coloring and Lysol mixing with glue and water mixture Chemical Changes: formed a new substance with new properties (sticky, gooey, semisolid from mixing liquid substances) Back to Jeopardy

$500 Question from C3 In order for a chemical change to occur during the goop lab this had to happen.

$500 Answer from C3 Back to Jeopardy What are bonds had to break and new bonds had to form?

$100 Question from C4 List each reactant shown in equation Fe  2Fe 2 O 3 2.2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O 3.NH 4 + NO 3  N 2 O + H 2 O

$100 Answer from C4 What are NH 4 and NO 3 ? Back to Jeopardy

$200 Question from C4 1.4Fe  2Fe 2 O 3 2.2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O 3.NH 4 + NO 3  N 2 O + H 2 O The formula of any product in equation 2.

$200 Answer from C4 What are CO 2 or H 2 O? Back to Jeopardy

$300 Question from C4 1.4Fe  2Fe 2 O 3 2.2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O 3.NH 4 + NO 3  N 2 O + H 2 O The equation that is not balanced.

$300 Answer from C4 What is equation 3? Back to Jeopardy

$400 Question from C4 1.4Fe  2Fe 2 O 3 2.2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O 3.NH 4 + NO 3  N 2 O + H 2 O This is how you balance Equation 3.

$400 Answer from C4 What is by adding coefficients? Back to Jeopardy

$500 Question from C4 Description of how concentration and temperature are related to the rate of a chemical reaction. Then identify and describe one more factor that can affect reaction rate.

$500 Answer from C4 What is: Concentration describes the number of particles in a given volume. As the concentration of the reactants increases, there are more particles to collide and react with one another. This can increase the reaction rate. Temperature is related to the rate of a reaction. Temperature is also related to energy, when you add energy to a reaction, it increases particle motion. This increase in motion is measured by an increase in temperature. Reactions at higher temperatures have reactant particles that are moving faster. This results in more reactant collisions and a faster reaction rate. Increased surface area means that more of the surface of the reactant is exposed. As surface area increases, the rate of reaction increases. Back to Jeopardy

$100 Question from C5 The type of reaction and balanced equation of H 2 +O 2  H 2 O

$100 Answer from C5 What is synthesis reaction and 2H 2 +O 2  2H 2 O Back to Jeopardy

$200 Question from C5 The type of reaction and balanced form of Al 2 O 3  Al + O 2.

$200 Answer from C5 What is decomposition reaction and 2Al 2 O 3  4Al + 3O 2 ? Back to Jeopardy

$300 Question from C5 The type of reaction and balanced form of Na + O 2  Na 2 O.

$300 Answer from C5 What is synthesis reaction and 4Na + O 2  2Na 2 O? Back to Jeopardy

$400 Question from C5 The type of reaction and balanced form of The equation: H 2 O 2  H 2 O + O 2

$400 Answer from C5 What are decomposition reaction and 2H 2 O 2  2H 2 O + O 2 ? Back to Jeopardy

$500 Question from C5 The type of reaction and balanced form Of C 2 H 2 + O 2  CO 2 + H 2 O.

$500 Answer from C5 What is 2C 2 H 2 + 5O 2  4CO 2 + 2H 2 O? Back to Jeopardy

Final Jeopardy The chemical formula for the following compounds and the type of bond formed: (Don’t forget to show oxidation numbers!) Mg and Cl _____________ ___________ H and O _______________ ___________.

Final Jeopardy Answer What is: Mg +2 and Cl 2 +2 MgCl 2 ionic H 2 +2 and O –2 H 2 O covalent ?