Chemical Reactions Change The Composition Of Matter

Question 0

Is established when the rate of the forward reaction equals the rate of the reverse reaction.

Answer 0

Chemical equilibrium

Question 1

Process of making and breaking chemical bonds leading to changes in the composition of matter. Process where reactants undergo changes into products

Answer 1

Chemical reactions

Question 2

A lipid that is a homogenous mixture of two or more substances.

Answer 2

Solution

Question 3

Dissolving agent of a solution.

Answer 3

Solvent

Question 4

Substance dissolved in a solution.

Answer 4

Solute

Question 5

Solution in which water is the solvent.

Answer 5

Aqueous solution

Question 6

Doesn’t react

Answer 6

Inert

Question 7

If an atom is electrically neutral, the number of protons ____ the number of electrons?

Answer 7

Equals

Question 8

Each pH unit represents a ____ difference so a slight change in pH represents a large change in actual [H+].

Answer 8

Tenfold

Question 9

Diverse group of organic compounds that are insoluble in water, but will dissolve in non polar solvents (e.g. Ether, chloroform, benzene).

Answer 9

Lipids

Question 10

Three important groups of lipid

Answer 10

Fats
Phospholipids
Steroids

Question 11

Macromolecules constructed from Glycerol (three-carbon alcohol), fatty acid (carboxylic acid), composed of a carboxyl group (-COOH) “head” at one end and an attached hydrocarbon chain (“tail”).

Answer 11

Fats

Question 12

Hydrocarbon chain has a long carbon skeleton usually with an even number of carbon atoms (most have 16-18 carbons). Nonpolar C-H bonds make the chain hydrophobic and NOT water soluble.

Answer 12

Fats

Question 13

No double bonds between carbons in fatty acid tail. Usually a solid at room temp. Most animal fats. e.g. Bacon grease, lard and butter.

Answer 13

Saturated fat

Question 14

One or more double bonds between carbons in fatty acid tail. Usually a liquid at room temp. Most plant days. e.g. Corn, peanut and olive oil.

Answer 14

Unsaturated fat

Question 15

Cushions vital organs are in what?

Answer 15

In mammals (e.g. Kidney)

Question 16

One gram of fat stores twice as much energy as a gram of polysaccharides.

Answer 16

Energy storage for fats

Question 17

Compounds with molecular building blocks of Glycerol, two fatty acids, one phosphate group, and usually an additional small chemical group attached to the phosphate. Are major constituents of cell membranes.

Answer 17

Phospholipids

Question 18

Differ from fat in that the ___ carbon of glycerol is joined to a negatively charged phosphate group.

Answer 18

Third

Question 19

Hydrocarbon tails are _________ and the polar head is _________?

Answer 19

Hydrophobic; hydrophilic