APES Vocabulary Chapter 2

studied byStudied by 2 people
5.0(1)
Get a hint
Hint

Matter

1 / 55

flashcard set

Earn XP

56 Terms

1

Matter

Anything that occupies space and has mass.

New cards
2

Mass

A measurement of the amount of matter an object contains.

New cards
3

Atom

The smallest particle that can contain the chemical properties of an element.

New cards
4

Element

A substance composed of atoms that cannot be broken down into smaller, simpler components.

New cards
5

Periodic table

A chart of all chemical elements currently known, organized by their properties.

New cards
6

Molecule

A particle that contains more than one atom.

New cards
7

Compound

A molecule containing more than one element.

New cards
8

Atomic number

The number of protons in the nucleus of a particular element.

New cards
9

Mass number

A measurement of the total number of protons and neutrons in an element.

New cards
10

Isotopes

Atoms of the same element with different numbers of neutrons.

New cards
11

Radioactive decay

The spontaneous release of material from the nucleus of radioactive isotopes.

New cards
12

Half-life

The times it takes for one-half of an original radioactive parent atom to decay.

New cards
13

Covalent bond

The bond formed when elements share electrons.

New cards
14

Ionic bond

A chemical bond between two ions of opposite charges.

New cards
15

Hydrogen bond

A weak chemical bond that forms when hydrogen atoms that are covalently bonded to one atom are attracted to another atom on another molecule.

New cards
16

Polar molecule

A molecule in which one side is more positive and the other side is more negative.

New cards
17

Surface tension

A property of water that results from the cohesion of water molecules at the surface of a body of water and that creates a sort of skin on the water's surface.

New cards
18

Capillary action

A property of water that occurs when adhesion of water molecules to a surface is stronger than cohesion between the molecules.

New cards
19

Acid

A substance that contributes hydrogen ions to a solution.

New cards
20

Base

A substance that contributes hydroxide ions to a solution.

New cards
21

pH

The number that indicates the relative strength of acids and bases in a substance.

New cards
22

Ocean acidification

An increase in the acidity of the oceans.

New cards
23

Chemical reaction

A reaction that occurs when atoms separate from molecules or recombine with other molecules.

New cards
24

Law of conservation of matter

A law of nature stating that matter cannot be created or destroyed; it can only change form.

New cards
25

Inorganic compound

A compound that does not contain the element carbon or contains carbon bound to elements other than hydrogen.

New cards
26

Organic compound

A compound that contains carbon-carbon and carbon-hydrogen bonds.

New cards
27

Carbohydrate

A compound composed of carbon, hydrogen, and oxygen atoms.

New cards
28

Protein

A critical component of living organisms made up of a long chain of nitrogen-containing organic molecules known as amino acids.

New cards
29

Nucleic acid

Organic compounds found in all living cells.

New cards
30

DNA (deoxyribonucleic acid)

A nucleic acid, the genetic material that contains the code for reproducing the components of the next generation, and which organisms pass on to their offspring.

New cards
31

RNA (ribonucleic acid)

A nucleic acid that translates the code stored in DNA, which makes possible the synthesis of proteins.

New cards
32

Lipid

A smaller organic biological molecule that does not mix with water.

New cards
33

Cell

A highly organized living entity that consists of the four types of macromolecules and other substances in a watery solution, surrounded by a membrane.

New cards
34

Energy

The ability to do work or transfer heat.

New cards
35

Joule

The amount of energy used when a 1-watt electrical device is turned on for 1 second

New cards
36

Power

The rate at which work is done.

New cards
37

Electromagnetic radiation

A form of energy emitted by the Sun that includes, but is not limited to, visible light, ultraviolet light, and infrared energy.

New cards
38

Photon

A massless packet of energy that carries electromagnetic radiation at the speed of light.

New cards
39

Potential energy

Stored energy that has not been released.

New cards
40

Chemical energy

Potential energy stored in chemical bonds.

New cards
41

Kinetic energy

The energy of motion.

New cards
42

Temperature

The measure of the average kinetic energy of a substance.

New cards
43

First law of thermodynamics

A physical law which states that energy can neither be created nor destroyed but can change from one form to another.

New cards
44

Second law of thermodynamics

The physical law stating that when energy is transformed, the quantity of energy remains the same, but its ability to do work diminishes.

New cards
45

Energy efficiency

The ratio of the amount of energy expended in the form you want to the total amount of energy that is introduced into the system.

New cards
46

Energy quality

The ease with which an energy source can be used for work.

New cards
47

Entropy

Randomness in a system.

New cards
48

Open system

A system in which exchanges of matter or energy occur across system boundaries.

New cards
49

Closed system

A system in which matter and energy exchanges do not occur across boundaries.

New cards
50

Input

An addition to a system.

New cards
51

Output

A loss from a system.

New cards
52

Systems analysis

An analysis to determine inputs, outputs, and changes in a system under various conditions.

New cards
53

Steady state

A state in which inputs equal outputs, so that the system is not changing over time.

New cards
54

Negative feedback loop

A feedback loop in which a system responds to a change by returning to its original state, or by decreasing the rate at which the change is occuring.

New cards
55

Positive feedback loop

A feedback loop in which change in a system is amplified.

New cards
56

Adaptive management plan

A plan that provides flexibility so that managers can modify it as changes occur.

New cards

Explore top notes

note Note
studied byStudied by 23 people
... ago
5.0(1)
note Note
studied byStudied by 6 people
... ago
5.0(1)
note Note
studied byStudied by 9 people
... ago
5.0(1)
note Note
studied byStudied by 15 people
... ago
5.0(1)
note Note
studied byStudied by 110 people
... ago
5.0(1)
note Note
studied byStudied by 142 people
... ago
5.0(1)
note Note
studied byStudied by 30 people
... ago
5.0(2)
note Note
studied byStudied by 35 people
... ago
5.0(1)

Explore top flashcards

flashcards Flashcard (81)
studied byStudied by 12 people
... ago
5.0(2)
flashcards Flashcard (71)
studied byStudied by 93 people
... ago
5.0(1)
flashcards Flashcard (57)
studied byStudied by 1 person
... ago
4.0(1)
flashcards Flashcard (37)
studied byStudied by 13 people
... ago
5.0(1)
flashcards Flashcard (41)
studied byStudied by 52 people
... ago
5.0(1)
flashcards Flashcard (25)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (30)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (60)
studied byStudied by 11 people
... ago
5.0(1)
robot