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9th Grade > Chapters 13-15 > Flashcards

Chapters 13-15 Flashcards

1
Q

A large organic molecule made from a chain of many smaller molecules

A

Polymer

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2
Q

The substances that undergo a chemical change are the

A

Reactants

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3
Q

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

A

Salt

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4
Q

Energy is absorbed from the surroundings and stored in chemical bounds by an

A

Endothermic reaction

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5
Q

Using an electrical current through a solution to coat an object with a thin layer of metal

A

Electroplating

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6
Q

The study of the rates of chemical reactions is

A

Chemical kinetics

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7
Q

The building blocks of proteins

A

Amion acids

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8
Q

The number indicating how many molecules are involved in a reaction

A

coefficient

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9
Q

What property of water measures the acidity and basicity of solutions

A

Water reacts slightly with itself

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10
Q

What is the uniqueness of carbon

A

Carbon has 4 valence elctrons

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11
Q

What molecule is the working copy of genetic information

A

RNA

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12
Q

What substances transport cholesterol

A

Lipoproteins

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13
Q

Why is ammonia a base

A

it produces hydroxide ions

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14
Q

What is used for short term fuel storage

A

Starch

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15
Q

What type of reaction occurs when two compounds switch two parts

A

Double displacement

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16
Q

If 1x10^-4 is increased by 6, what is the new pH?

A

10

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17
Q

What functional group is found in the middle of the molecule

A

Ester group

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18
Q

What is true about every anode of every electrochemical cell

A

Electron current leaves at the anode

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19
Q

When an equilibrium is disturbed, what causes the system to partially offset the disturbance

A

Le Chatelier’s principle

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20
Q

What is a comibionation reaction

A

A+B—–> AB

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21
Q

Hydrogen gas uses Zn and how many HCl?

A

2

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22
Q

A compound that contains only hydrogen and carbon and has a cyclic structure with delocalized electrons

A

Aromatic hydrocarbon

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23
Q

Kinetic energy that two colliding molecules must have to undergo a chemical change

A

activation energy

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24
Q

What is a chemical change resulting from a collision between molecules

A

Chemical reaction

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25
Q

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

A

Balanced

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26
Q

What is Hv3O+ called

A

Oxonium

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27
Q

What is a segment of DNA contains the code for a specific substance

A

Gene

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28
Q

What term describes a substance that is neither and acid or a base

A

Neutral

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29
Q

What branch of chemistry studies carbon containing compounds

A

Organic Chemistry

30
Q

What is the term for reaction which electrons are transferred between atoms

A

redox

31
Q

What term is a situation that 2 reaction are in opposite directions occur at the same rate

A

Equilibrium

32
Q

What are atoms of the same element that have different mass numbers

A

Isoopes

33
Q

How many neutrons are in 26/12 Mg?

A

14

34
Q

What bond is when 4 electrons are shared with 2 atoms

A

Double bond

35
Q

What is the minimum amount of material required for a reaction to occur?

A

Critical mass

36
Q

What does the Bohr model look like

A

A nucleus with layered shells of electrons

37
Q

What will cause the sugar cube to dissolve most quickly

A

hot water being stirred

38
Q

What type of substance is MnO4-

A

a polyatomic ion

39
Q

What is the symbol for oxygen

A

O

40
Q

What is the symbol for potassium

A

K

41
Q

What is the symbol for sodium

A

Na

42
Q

What is the symbol for gold

A

Au

43
Q

The idea that tiny particles do not absorb or release energy smoothly

A

Quantum theory

44
Q

The idea that no two electrons can have the same 4 qunatum numbers

A

Pauli exclusion principle

45
Q

What is the molar mass of B2H6 B=10.81 and H=1.008

A

27.67

46
Q

A homogenous mixture is a

A

solution

47
Q

An atom that has a positive charge is

A

A cation

48
Q

If 2 atoms are bonded covalently with different charges the bond between them is

A

Polar

49
Q

A substance made of 2 or more elements

A

Compound

50
Q

Elements are divided into 3 groups, metals, semimetals, and ?

A

Nonmetals

51
Q

Mixing molecues by random molecular motion

A

diffusion

52
Q

1 Uranium and 6 fluorine is

A

Uranium hexafluoride

53
Q

What is not a principle of atomic theory

A

All atoms are made of subatomic particles

54
Q

What type of decay is when unstable atom ejects 2 protons and 2 neutrons

A

Alpha decay

55
Q

The decay in which an electron is emitted

A

Gamma

56
Q

one way diffusion through a semi permeable membrane

A

Osmosis

57
Q

The strongest intermolecular force

A

hydrogen bond

58
Q

Intermolecular force between all molecules

A

London force

59
Q

The property that describes how strongly atoms pull on electrons

A

electronegativity

60
Q

What would increase a boiling point if everything else stays the same?

A

increase intermolecular forces

61
Q

What is Ca

A

Calcium

62
Q

What is the only metals that is liquid at room temperature

A

mercury

63
Q

What is not a suspension

A

table salt

64
Q

What type of reactor produces more fuel than it consumes

A

Breeder reactor

65
Q

Substances that are composed of only 1 type of atoms

A

element

66
Q

What is an empirical formula

A

just letters

67
Q

What is needed for hydrogen bonding

A

Hydrogen must be bound to an electronegative atom

68
Q

What is a row of elements

A

period

69
Q

A physical combination of pure substances

A

mixtures

70
Q

What is Scl4

A

Sulfur tetrachloride

9th Grade (3 decks)

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