Test 5

Question 1

A chemical reaction that may be represented as A + B –> AB is a ? reaction.

Answer 1

combination

Question 2

Chemical reactions in which an element in a compound is replaced by another element are classified as?

Answer 2

single-displacement

Question 3

Hydrocarbons with one or more triple bonds between carbon atoms are classified as ?

Answer 3

alkynes

Question 4

Hydrocarbons containing one or more double bonds between carbon atoms are called

Answer 4

alkenes

Question 5

Which of the following is not a reason that DNA is important?

Answer 5

DNA is contained in the cell nucleus.

Question 6

Which type of electrochemical cell is designed to be recharged with electricity from an outside current source?

Answer 6

storage cell

Question 7

An electrochemical cell that produces a chemical reaction through electrolysis is a(n) ?

Answer 7

electrolytic cell

Question 8

Which cell type produces electricity using chemicals stored within the cell and is not rechargeable?

Answer 8

voltaic cell

Question 9

What is a lipid that the body uses to make bile, witamin D, and cell membranes?

Answer 9

cholesterol

Question 10

A chemical reaction that is able to occur by itself without continuing outside help is a(n) ? reaction.

Answer 10

spontaneous

Question 11

A chemical reaction that releases thermal energy is a(n) ? reaction.

Answer 11

exothermic

Question 12

“When equilibrium is disturbed, the system will react to at least partially offset the disturbance” is a statement of ?

Answer 12

Le Chatelier’s principle

Question 13

The number in a chemical equation that indicates how many molecules or formula units are involved in a reaction is the ?

Answer 13

coefficient

Question 14

The original substances that undergo a chemical reaction are the ?

Answer 14

reactants

Question 15

A segment of DNA containing the code for a specific substance, task, or characteristic is a ?

Answer 15

gene

Question 16

Any ionic compound that does not contain a hydrogen ion or hydroxide ion is considered a(n) ?

Answer 16

salt

Question 17

A substance that produces hydrogen cations when dissolved in an aqueous solution is called a(n) ?

Answer 17

acid

Question 18

Hair, fingernails, toenails, and animal hoofs and claws are composed of ? proteins.

Answer 18

fibrous

Question 19

A “working copy” of a cell’s genetic information is ?

Answer 19

RNA

Question 20

Which of the following structural formulas represents a carboxylic acid?

Answer 20

the answer a

Question 21

The chemical process in which polymers are produced is?

Answer 21

polymerization

Question 22

Glucose is burned in mitochondria through the process of?

Answer 22

cellular respiration

Question 23

A collision between atoms or molecules may result in a(n)?

Answer 23

chemical reaction

Question 24

A chemical equation that has the same number of each type of atom on each side of the arrow is said to be?

Answer 24

balanced

Question 25

The process by which the body produces and uses energy from food is ?

Answer 25

metabolism

Question 26

The five main factors that affect the rate of a chemical reaction are ?, temperature, catalyst, surface area, and ?

Answer 26

activation energy; concentration

Question 27

the "building blocks" of proteins

Answer 27

amino acids

Question 28

group of biological compounds characterized by insolubility in water

Answer 28

lipids

Question 29

fats that are usually liquid at room temperature

Answer 29

unsaturated fats

Question 30

consist of three fatty acid "rods" with their "handles" attached to a single molecule of glycerol

Answer 30

fats

Question 31

complex organic molecules used to build and maintain living cells

Answer 31

proteins

Question 32

act as biochemical catalysts in the body

Answer 32

enzymes

Question 33

What area of chemistry addresses the rates of chemical reactions?

Answer 33

chemical kinetics

Question 34

What scale is a measure of the concentration of H3O+ ions in a given solution?

Answer 34

pH scale

Question 35

What serves as the energy carrier of the cell?

Answer 35

ATP

Question 36

What is an expression that uses chemical symbols to represent a chemical reaction?

Answer 36

chemical equation

Question 37

Which principle states that the total mass of the reactants equals the total mass of the products?

Answer 37

conservation of mass

Question 38

What is a substance that alters the rate of a chemical reaction without being permanently changed in the reaction?

Answer 38

catalyst

Question 39

What process uses an electrochemical cell to form a thin coating of metal on an object?

Answer 39

electroplating

Question 40

Polysaccharide used for food storage in plants

Answer 40

starch

Question 41

Important six-carbon sugar found in both animals and plants

Answer 41

glucose

Question 42

Common polysaccharide used for food storage in animals and people

Answer 42

glycogen

Question 43

Group of compounds that provide most of the energy for living things

Answer 43

carbohydrate

Question 44

Two monosaccharide molecules linked to form a larger molecule

Answer 44

disaccharide

Question 45

Relatively small carbohydrates, containing up to about ten rings of atoms

Answer 45

sugar

Question 46

Forms the walls of plant cells and gives plants and trees their rigid structure

Answer 46

cellulose

Question 47

The law requiring that every chemical reaction must cause a decrease in usable energy and an increase in entrophy is the second law of thermodynamics.

Answer 47

true

Question 48

The kinetic energy necessary for molecules to chemically react is the activation energy

Answer 48

true

Question 49

The process in which hydrogen atoms are added to some double bonds in vegetable oil is hydrolyzation.

Answer 49

hydrogenation

Question 50

To increase the reaction rate, the surface area of the reactants can be decreased.

Answer 50

increased

Question 51

The process of initiating a chemical reaction using an electric current is electrolysis.

Answer 51

true

Question 52

In an electrochemical cell, reduction occurs at the anode.

Answer 52

cathode

Question 53

Lipoproteins that can reduce the risk of cardiovascular diseases are low-density lipoproteins.

Answer 53

high-density