ch 2.review game chemistry of life properties of water c based molecules chemical reactions enzymes...
TRANSCRIPT
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Ch 2.Review GameChemistry of life
Properties of water
C based molecules
Chemical Reactions
Enzymes
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Final Jeopardy
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$100 Question from H1
Draw Silicon on the board
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$100 Answer from H1
Cells
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$200 Question from H1
What is an element? How do you identify different elements?
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$200 Answer from H1
Specific kind of atom. Number of protons.
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$300 Question from H1
What is an ion? How does an ionic bond form?
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$300 Answer from H1
Gain/loss of electrons. Attraction between oppositely charged ions.
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$400 Question from H1
What are valance electrons? Why do they matter?
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$400 Answer from H1
Outermost electrons,reactivity
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$500 Question from H1
What is the difference between ionicAnd covalent bonds? Which isStronger?
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$500 Answer from H1
Ionic- attraction between two oppositely charged IONSCovalent- physical sharing of electrons between two atomsCovalent are stronger
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$100 Question from H2
What is a solvent?
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$100 Answer from H2
Present in greater amounts, dissolves the solute. Water is a popular example
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$200 Question from H2
What is concentration? Give an example of how to increase the concentration of a solution
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$200 Answer from H2
Amount of solute dissolved in solventEx- more sugar in your kool-aid
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$300 Question from H2
What does pH stand for? What does it mean?
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$300 Answer from H2
Potential hydrogen Potential for a substance to release or remove protons
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$400 Question from H2
Why is hydrogen bonding possible?
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$400 Answer from H2
Polarity results in partial +/- charges. Water molecule is polar because of unequal sharing of electrons
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$500 Question from H2
Name and define the 3 important properties of water associated with hydrogen bonding
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$500 Answer from H2High specific heat- resists temperature changeCohesion- molecules attracted to themselvesAdhesion- molecules attracted to another substance.
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$100 Question from H3
How many bonds can Carbon make?
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$100 Answer from H3
4
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$200 Question from H3
What is a monomer? What is a polymer?
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$200 Answer from H3
Monomer- basic unit/subunitPolymer- many monomers bound together
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$300 Question from H3
Name the four macromolecules
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$300 Answer from H3
Carbs, lipids, proteins, nucleic acids
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$400 Question from H3
What are the monomers for each of the macromolecules?
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$400 Answer from H3
Carbs- monosaccharidesProtein- amino acidsNucleic acids- nucledtidesLipid- trigylceride
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$500 Question from H3
Send someone to the board to draw an ionic compound LiF.
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$500 Answer from H3
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$100 Question from H4
N +3H NH3
What are the reactants What are the products?
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$100 Answer from H4
R- N, HP- NH3, ammonia
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$200 Question from H4
What is activation energy?
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$200 Answer from H4
Energy required to get a reaction going
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$300 Question from H4
When is a chemical reaction said to be in equilibrium?
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$300 Answer from H4
Reactants and products produced at same rate (reaction proceeds in twoDirections rather than only 1)
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$400 Question from H4
What elements make up a carbohydrate and in what ratio?
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$400 Answer from H4
C, H, and O in 1:2:1 ratio
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$500 Question from H4
Send someone to draw a fully labeled exothermic reaction
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$500 Answer from H4Overall release of energy. Products lower than reactants.
Labels: reaction progress x axisEnergy y axisReactantsProductsActivation energy
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$100 Question from H5
What is a catalyst
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$100 Answer from H5
Speeds up chemical reaction by loweringActivation energy
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$200 Question from H5
What is an enzyme?
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$200 Answer from H5
Enzymes are catalysts inside living things. They allow chemical reactions to occur under tightly controlled conditions.
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$300 Question from H5
Why are enzymes necessary?
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$300 Answer from H5
Chemical reactions in our body must occur under tightly controlled conditions. Often times reactants inOur bodies are present in very small quantities and needa catalyst to get going. Enzymes are special catalysts specially designed to jump start specific reactions by binding to the active site on a particular substrate.Without enzymes many of our necessary metabolic chemical reactions would not proceed.
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$400 Question from H5
Lactose intolerance occurs because of a mutation in an enzyme called lactase that binds to lactose to catalyze the breakdown of dairy products. If lactase is the damaged enzyme, lactose would be the _________. Why can’t a different enzyme do the job of lactase?
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$400 Answer from H5
Substrate.Structure/function lock/key
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$500 Question from H5How does the structure of an enzyme affect function? Why is this important?
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$500 Answer from H5
Enzymes have unique structures that allow them to bond only to certain substrates like a lock and key. Each lock and key can start up a unique reaction. This is important because we don’t want enzymes going around and catalyzing any and every chemical reaction in our body. Living things need their internal environment to be steady and controlled.
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Final Jeopardy
On a separate sheet of paper draw the following:MgS
H2O (draw two molecules and show how they hydrogen bond)
O2
The first group to put their paper in the air will have their answers checked first.
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Final jeopardy answer: