Test 11

Question 1

What action would likely increase the rate of a chemical reaction?

Answer 1

increase surface area

Question 2

What quantity decreases in every spontaneous reaction?

Answer 2

usable energy

Question 3

What type of electrochemical cell uses an electric current to produce a chemical reaction?

Answer 3

electrolytic cell

Question 4

What type of electrochemical cell is designed to recharge with electricity from an outside source?

Answer 4

storage cell

Question 5

What is the general term for a substance that speeds up a chemical reaction but is not permanently changed or consumed in the reaction?

Answer 5

catalyst

Question 6

represents a combination reaction

Answer 6

A + B -> AB

Question 7

What principle says that when an equilibrium is disturbed, the system will behave in a way that at least partially offsets the disturbance?

Answer 7

Le Chatelier’s principle

Question 8

Mathematically, the pH of a solution is the additive inverse of the ________ when (H3O+) in moles per liter is expressed as a power of ten.

Answer 8

exponent

Question 9

represents a double-displacement reaction

Answer 9

AB + CD -> AD + CB

Question 10

What substance is used for food storage in plants?

Answer 10

starch

Question 11

What substances are used to transport cholesterol through the body?

Answer 11

lipoproteins

Question 12

What molecule is used as a working copy of genetic information?

Answer 12

RNA

Question 13

What is slippery to the touch, has a bitter taste, and turns litmus paper blue?

Answer 13

base

Question 14

What is the name of the H3O+ ion?

Answer 14

oxonium

Question 15

What lipid contains no double bonds?

Answer 15

saturated fat

Question 16

What is the general term for a reaction in which electrons are transferred between atoms?

Answer 16

redox reaction

Question 17

What property helps explain the uniqueness of carbon?

Answer 17

Carbon has four valence electrons

Question 18

What is an organic compound with one or more hydrogen atoms replaced with an -OH group?

Answer 18

alcohol

Question 19

statement that describes the structure of DNA

Answer 19

Two backbones connected by base pairs form a double helix

Question 20

The energy carrier of the cell is the compound named ______.

Answer 20

ATP

Question 21

The principle that states the total mass of the reactants is equal to the total mass of the products is the ______.

Answer 21

law of conservation of mass

Question 22

Reactions that can proceed in either direction are said to be ________ reactions.

Answer 22

reversible

Question 23

An electrochemical cell that generates electricity using substances that are continually replenished from an outside source is a ______ cell.

Answer 23

fuel

Question 24

To balance an equation, you can only change the _________, not the subscripts.

Answer 24

coefficients

Question 25

A compound that has a cyclic structure with delocalized electrons is an ________ hydrocarbon.

Answer 25

aromatic

Question 26

hydrocarbon containing only single bonds

Answer 26

alkane

Question 27

contains a halogen atom bonded to a carbon atom

Answer 27

haloalkane

Question 28

always found in the middle of a molecule, never on the end of a carbon chain

Answer 28

ester

Question 29

hydrocarbon that contains one or more double bonds

Answer 29

alkene

Question 30

salt of a carboxylate ion

Answer 30

soap

Question 31

What term describes the kinetic energy necessary for reactant molecules to undergo a chemical reaction?

Answer 31

activation energy

Question 32

What term describes a chemical equation that has the same number of atoms of each element on both sides of the arrow?

Answer 32

balanced

Question 33

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

Answer 33

gene

Question 34

What term describes a substance that is neither an acid nor a base?

Answer 34

neutral

Question 35

What branch of chemistry is the study of carbon-containing compounds?

Answer 35

organic chemistry

Question 36

What term describes a situation in which two reactions in opposite directions occur at the same rate?

Answer 36

equilibrium

Question 37

What group is characterized by being insoluble in water?

Answer 37

lipids

Question 38

What group consists of smaller molecules linked by peptide bonds

Answer 38

proteins

Question 39

What group consists of carbon, hydrogen, and oxygen in about a 1:2:1 ratio?

Answer 39

carbohydrates

Question 40

The substances that undergo a chemical change are the ________.

Answer 40

reactants

Question 41

An ionic compound that does not contain either a hydrogen ion or a hydroxide ion is a _____.

Answer 41

salt

Question 42

Using an electrical current passing through a solution to coat an object with a thin layer of metal is ________.

Answer 42

electroplating

Question 43

What is the study of the rates of chemical reactions?

Answer 43

chemical kinetics

Question 44

What are the building blocks of proteins?

Answer 44

amino acids

Question 45

A number indicating how many molecules or formula units of a substance are involved in reaction is a _______.

Answer 45

coefficient

Question 46

The pH of water is ___.

Answer 46

7

Question 47

A chemical change resulting from a collision between molecules

Answer 47

chemical reaction

Question 48

reaction that absorbs energy from the surroundings and stores the energy in chemical bonds

Answer 48

endothermic reaction

Question 49

reaction that involves a single substance breaking down into two or more other substances

Answer 49

decomposition reaction

Question 50

reaction that can occur without continuing outside help

Answer 50

spontaneous reaction

Question 51

What property can a scientist use to determine whether a substance is a monosaccharide or a polysaccharide?

Answer 51

structural formula

Question 52

A change in color is evidence of a ______ change.

Answer 52

chemical

Question 53

Adding more of an element on the left side of an equation causes more products to form, and the equilibrium will shift to the ______.

Answer 53

left