Chemisty

Question 0

Covalent

Answer 0

Covent bonds form when electrons are shared equally

Question 1

Ionic

Answer 1

Ionic bonds form between two atoms when one or more electrons are transferred from one atom to another.

Question 2

Nonpolar covalent

Answer 2

Bonds form when electrons are shared equally.

Question 3

Polar covalent

Answer 3

Form when electrons are shared unequally.

Question 4

Single covalent, double covalent, and triple covalent bonds are formed when?

Answer 4

When two, for and six electrons are shared respectively.

Question 5

Hydrogen bonds

Answer 5

Hydrogen bonds are week bonds between molecules. They form when a positively charged hydrogen atom in one covalent bond molecule is attracted to a negatively charged area to the molecule.

Question 6

Describe a hydrogen bond in water.

Answer 6

In water the positive pole around the hydrogen atom form a hydrogen bond to the negative poles around the oxygen atom of another water molecule.

Question 7

Solute

Answer 7

A substance that dissolves in a solvent.

Question 8

Specific heat capacity

Answer 8

Is the degree to which a substance changes temperature in response to heat.

Question 9

Heat of fusion

Answer 9

The energy required to change water from a solid to a liquid.

Question 10

Heat of vaporization

Answer 10

It is the energy required to change water from liquid to a gas.

Question 11

Cohesion

Answer 11

Attraction between like substances

Question 12

Adhesion

Answer 12

It is the attraction of unlike substances.

Question 13

Capillary action

Answer 13

When water a hears to the walls of narrow tubing or to absorb solid like paper, it demonstrates capillary action by rising up the tubing or creeping through the paper.

Question 14

Organic

Answer 14

Molecules that have carbon atoms.

Question 15

Macromolecules

Answer 15

Large organ molecules that may consist of hundreds of thousands of atoms.

Question 16

Polymers

Answer 16

Macromolecules,Molecules of many monomers

Question 17

Functional group

Answer 17

Many organic molecules share similar properties because they have similar clusters of atoms.

Question 18

Monosaccharide

Answer 18

The simplest kind of carbohydrate

Question 19

Sugar molecules have the formula (CH2O)n what can the n be?

Answer 19

3-8

Ex: glucose and fructose the n is 6 so the formula would be. C6H12O6

Question 20

Disaccharide

Answer 20

Consist of two sugar molecules joined by glycosidic linkage.

Question 21

Types of Lipids

Answer 21

Triglycerides
Phospholipid
Steroids

Question 22

Triglycerides

Answer 22

Includes fats and oils. They consist of three fatty acids attached to a glycerol molecule.

Question 23

Fatty acids

Answer 23

Hydrocarbons with a carboxl group at one end of a chain.

Question 24

Saturated fatty acid

Answer 24

Has a single covalent bond between each pair of carbon atoms, and each carbon has two hydrogen bonded to it.

Question 25

Monounsaturated fatty acid

Answer 25

Has one double covalent bond, and each of the carbons in the bond has only one hydrogen atom bonded to it

Question 26

Polyunsaturated fatty acid

Answer 26

Like monosaturated except that there are two or more double covalent bonds.

Question 27

Phospholipid

Answer 27

Looks like a triglyceride except that one of the fatty acid chains is replaced by a phosphate group. Has a head which is hydrophilic and a tail which is hydrophobic.

Question 28

Steroids

Answer 28

Characterized by a backbone fore linked carbon rings.

Question 29

How can proteins be grouped

Answer 29

1. Structural protein, 2. Storage proteins, 3. Transport proteins, 4.defense proteins, 5.enzyems

Question 30

Structural proteins

Answer 30

Such as keratin in the hair and horns of animals, collagen in connective tissues, and silk in spider webs.

Question 31

Storage proteins

Answer 31

Such as casein in milk, ovalbumin in egg whites, and zein in corn seeds.

Question 32

Transport proteins

Answer 32

Transports thing into , out of, and across a cell membrane.

Question 33

Enzyems

Answer 33

They regulate the rate of chemical reactions.

Question 34

4 levels of a protein

Answer 34

Primary structure Secondary structure Tertiary structure Quaternary structure

Question 35

Factors that contribute to the tertiary structure

Answer 35

Hydrogen bonding between r groups of amino acids Ionic between r groups of amino acids Formation of disulfide bonds that form when suffer atom in the amino acid cysteine bonds to suffer atoms in another cysteine.