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Katie Science Tests > Test 5 > Flashcards

Test 5 Flashcards

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1
Q

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

A

combination

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2
Q

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

A

single-displacement

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3
Q

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

A

alkynes

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4
Q

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

A

alkenes

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5
Q

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

A

DNA is contained in the cell nucleus.

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6
Q

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

A

storage cell

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7
Q

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

A

electrolytic cell

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8
Q

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

A

voltaic cell

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9
Q

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

A

cholesterol

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10
Q

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

A

spontaneous

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11
Q

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

A

exothermic

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12
Q

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

A

Le Chatelier’s principle

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13
Q

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

A

coefficient

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14
Q

The original substances that undergo a chemical reaction are the ?

A

reactants

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15
Q

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

A

gene

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16
Q

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

A

salt

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17
Q

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

A

acid

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18
Q

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

A

fibrous

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19
Q

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

A

RNA

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20
Q

Which of the following structural formulas represents a carboxylic acid?

A

the answer a

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21
Q

The chemical process in which polymers are produced is?

A

polymerization

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22
Q

Glucose is burned in mitochondria through the process of?

A

cellular respiration

23
Q

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

A

chemical reaction

24
Q

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

A

balanced

25
Q

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

A

metabolism

26
Q

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

A

activation energy; concentration

27
Q

the “building blocks” of proteins

A

amino acids

28
Q

group of biological compounds characterized by insolubility in water

A

lipids

29
Q

fats that are usually liquid at room temperature

A

unsaturated fats

30
Q

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

A

fats

31
Q

complex organic molecules used to build and maintain living cells

A

proteins

32
Q

act as biochemical catalysts in the body

A

enzymes

33
Q

What area of chemistry addresses the rates of chemical reactions?

A

chemical kinetics

34
Q

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

A

pH scale

35
Q

What serves as the energy carrier of the cell?

A

ATP

36
Q

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

A

chemical equation

37
Q

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

A

conservation of mass

38
Q

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

A

catalyst

39
Q

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

A

electroplating

40
Q

Polysaccharide used for food storage in plants

A

starch

41
Q

Important six-carbon sugar found in both animals and plants

A

glucose

42
Q

Common polysaccharide used for food storage in animals and people

A

glycogen

43
Q

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

A

carbohydrate

44
Q

Two monosaccharide molecules linked to form a larger molecule

A

disaccharide

45
Q

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

A

sugar

46
Q

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

A

cellulose

47
Q

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.

A

true

48
Q

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

A

true

49
Q

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

A

hydrogenation

50
Q

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

A

increased

51
Q

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

A

true

52
Q

In an electrochemical cell, reduction occurs at the anode.

A

cathode

53
Q

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

A

high-density

Katie Science Tests (11 decks)

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