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Unit 5 Test Review

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Page 1: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Unit 5 Test Review

Page 2: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is the Law of Conservation of Mass?

• In any reaction mass is conserved– Mass of reactants = mass of products

Page 3: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Describe fusion

• 2 or more nuclei combine to form a larger nuclei

Page 4: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Describe fission

• nuclei split into fragments when struck by neutrons

Page 5: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

The reactants and products of complete combustion of a hydrocarbon CxHx would include

• H2O

• CO2

• O2

Page 6: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

The reactants and products of a decomposition reaction would include• A single reactant that is an ionic or molecular

compoound• Have multiple products

Page 7: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What type of reaction occurs when magnesium reacts with aluminum

chloride?

• Single replacement

Page 8: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

The reactants and products of a synthesis reaction would include

• Multiple reactants and a single product

Page 9: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

The reactants and products of a single replacement reaction would

include• A single element and a compound

Page 10: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What will happen to the rate of reaction if you increase the concentration of the reactants?

• It will increase

Page 11: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What will happen to the rate of reaction if you increase the temperature?

• The rate will increase

Page 12: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is activation energy?

• The amount of energy needed for a reaction to occur

Page 13: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is a catalyst?

• A substance that when added to a reaction, will increase the rate of the reaction without being used up

Page 14: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What are enzymes?

• Proteins in the body that act as catalysts for biological processes

Page 15: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is a limiting reactant?

• When there are more than 1 reactants - –the one that gets used up first and

limits that amount of product possible

Page 16: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the parts of a reaction

• Coefficient• Reactant• Separates reactants or products• seperates reactants from products• Tells the state of the substance• product

Page 17: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is an endothermic reaction?

A reaction in which energy is absorbed

Page 18: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What is an exothermic reaction?

• A reaction in which energy is released

Page 19: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the following reaction as:synthesis, decomposition, single-displacement, double displacement, or combustion

NaNO3 (s) NaNO2 (s) + O2 (g)

decomposition

Page 20: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the following reaction as:synthesis, decomposition, single-displacement, double displacement, or combustion

FeS (s) + HCl (aq) FeCl2 (aq) + H2S (g)

double displacement

Page 21: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the following reaction as:synthesis, decomposition, single-displacement, double displacement, or combustion

CO (g) + O2 (g) CO2 (g) + H2O (g)

combustion

Page 22: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the following reaction as:synthesis, decomposition, single-displacement, double displacement, or combustion

Al (s) + S (s) Al2S3 (s)

synthesis

Page 23: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Identify the following reaction as:synthesis, decomposition, single-displacement, double displacement, or combustion

KI (aq) + Cl2 (g) KCl (aq) +I2 (aq)

single displacement

Page 24: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Write a balanced chemical equation for the following reaction

sodium metal will combine with oxygen in dry air to form solid sodium oxide

4Na (s) + O2 (g) 2Na2O (s)

Page 25: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Balance the following equation

AlCl3 (aq) + NaOH (aq) NaCl3 (aq) + AlOH (s)

AlCl3 (aq) + NaOH (aq) NaCl3 (aq) + AlOH (s)

Page 26: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Balance the following equation

Ca (s) + 2H2O (l) CaOH2 (aq)

2Ca (s) + 2H2O (l) 2CaOH2 (aq)

Page 27: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

What are the reactants in a double replacement reaction?

• 2 ionic compounds

Page 28: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

In the equation 2K (s) + 2H2O (l) 2KOH (aq) + H2 (g), what is the physical state of each reactant and product?

reactants products

K – solid KOH – aqueous solutionH2O – liquid H2 - gas

Page 29: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Write a balanced chemical equation for the following reactionaluminum metal + hydrochloric acid aluminum chloride solution + hydrogen

2Al + 6HCl 2AlCl3 + 3H2

Page 30: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

• Chem I - done• Chem I honors continue

Page 31: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Determine the oxidation numbers of all elements of the following substances

Al

= 0

Page 32: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Determine the oxidation numbers of all elements of the following substances

Ca2+

= +2

Page 33: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Determine the oxidation numbers of all elements of the following substances

PO42-

P = +6O = -2

Page 34: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

Determine the oxidation numbers of all elements of the following substances

C2H6O

C = -2H = +1O = -2

Page 35: Unit 5 Test Review. What is the Law of Conservation of Mass? In any reaction mass is conserved – Mass of reactants = mass of products

For the following redox reaction determine the element that is oxidized, reduced, the oxidizing

agent, and the reducing agent

H2C2O4 + K2MnO4 CO2 + K2O + Mn2O3 + H2O

• C - +3 +4 = lose 1 e- = oxidized, reducing agent

• Mn +6 +3 = gain 3 e- = reduced, oxidizing agent