16 Chemistry and Organic Molecules test...

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Chemistry


Properties of Water 1


Organic Compounds Structure


Organic Compounds Functions


Organic Compounds


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Chemistry Properties of Water 1


Organic Compounds structure

Organic Compounds

Function

Organic Compounds

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A covalent bond is formed by


sharing an electron pair


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Which is a narrower pH range?8.5 - 8.64.5 - 6

1-3


8.5 – 8.6(smallest difference

between values)


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Which of the following is the strongest acid?

pH of 2pH of 6pH of 8


pH of 2


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How can you tell whether one molecule has

more energy than another?


by looking at the number of bonds in the molecule?


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What type of ion forms when an

atom loses electrons?


a positive ion


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When sugar is dissolved in

water, water is the…


solvent


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What property of water allows

insects to sit on the surface?


surface tension (caused by cohesion)?


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Properties of water that allow it to move from the

roots to the leaves of a tree


Cohesion and Adhesion


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What property of water makes water ideal for carrying

dissolved substances in blood?


universal solvent


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What property of water causes a cell to rupture

when it freezes?


ice is less dense than water?


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What polarity means?


When the atoms of a molecule do not share electrons evenly. One end of the molecule is positive and the other

is negative.


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Why water is polar?


Water is polar because the oxygen does not share the electrons evenly with the

hydrogen. The oxygen pulls more strongly on the

electrons which causes the oxygen to have a negative

charge and the hydrogens to have a positive charge.


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What causes water to stick to itself? What

causes water to expand when it freezes?


Hydrogen bonds form between water

molecules. These cause water to

spread out when it freezes


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How is water being a good

solvent a result of water’s polarity?


Because water is polar the positive end of water can attract

to any negative ions and the negative end of water can

attract to any positive ions. This allows water to dissolve other

polar or ionic substances.


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How is water’s high specific

heat a result of it being polar?


Water’s high specific heat is a result of it being polar because each time a water molecule moves past another

water molecule it “sticks” because of hydrogen bonds. It takes a lot of

energy to heat up water because you have to break those bonds. This

causes water to have a high specific heat.


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What type of molecule is this?


Lipid


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Polysaccharide (or carbohydrate)


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What type of molecule is this


Nucleotide(Nucleic Acids)


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What type of molecule is this


Monosaccharide (carbohydrate)


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Amino Acid (Protein)


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Which macromolecule

provides insulation, protection and energy

reserves for mammals?


lipid


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Which type of organic molecule is the main fuel (energy) supply

of the cell?


Carbohydrates


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Which molecule stores

information for making proteins?


nucleic acids


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Which type of molecules are

enzymes?


Protein


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List 3 properties/Functions of

lipids


• Component of the cell membrane

• Energy storage molecule• Nonpolar• Organic


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Name 4 organic polymers

(macromolecules)


LipidsCarbohydrates

ProteinsNucleic Acids


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What do carbs, lipids, proteins

and nucleic acids all have in common?


They are all organic

molecules


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Name the monomers of

Carbs, Proteins, and Nucleic

Acids


Monomers:Monosaccharide

Amino AcidNucleic Acid


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Name 4 polysaccharides


Starch, Cellulose,Glycogen,

Chitin


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Which macromolecule has a

monomer which contains a phosphate a sugar and a base?


Nucleic Acid-Monomer: Nucleotide


Which macromolecules contain at least C, H, O and N?

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Amino Acids-CHONS

Nucleic Acids: CHONPS

16 Chemistry and Organic Molecules test...

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