A&p Ch2 Part 1.1

Front 1

Matter

Back 1

Anything that occupies space & has mass

Front 2

States of matter

Back 2

2. Solid
2. Liquid
3. Gaseous

Front 3

Solid

Back 3

Has definite shape & volume

Front 4

Liquid

Back 4

Definitive volume but no definitive shape

Front 5

Gaseous

Back 5

No definitive shape or volume

Front 6

Kinetic energy

Back 6

Energy in action

Front 7

Potential energy

Back 7

Stored energy

Front 8

Forms of energy

Back 8

1. Chemical
2. Electrical
3. Mechanical
4. Radiant or electromagnetic

Front 9

Chemical energy

Back 9

Stored in bonds of chemical substances

Front 10

Electrical energy

Back 10

Results from movement of charged particles

Front 11

Mechanical energy

Back 11

Energy DIRECTLY. Involved in moving matter

Front 12

Radiant/electromagnetic energy

Back 12

Energy that travels in waves

Front 13

Elements

Back 13

Unique substances that cannot be broken down into simpler substances by ordinary chemical methods

Front 14

Atoms

Back 14

Particles or building blocks of elements

Front 15

Contents of nucleus

Back 15

Protons & neutrons

Front 16

Protons

Back 16

Positively charged

Front 17

Neutrons

Back 17

Neutral

Front 18

Electrons

Back 18

Negatively charged & always in equal # to the # of protons in the atom's nucleus

Front 19

2 types of atomic models

Back 19

1. Planetary model (outdated)
2. Orbital model (has shading to show likely regions of electron dendity)

Front 20

Atomic number

Back 20

Is equal the # of protons in an atom
In subscript to left of atomic symbol

Front 21

Mass number

Back 21

Protons plus neutrons
Written in superscript to the left of atomic symbol

Front 22

Isotopes

Back 22

Structural variations present in nearly all elements
Has same number of protons (&electrons) but differing number of neutons

Front 23

Atomic weight

Back 23

Average of all the weights of all the isotopes of an element

Front 24

Radioisotopes

Back 24

Heavier isotopes that spontaneously decompose into more stable forms

Front 25

Major elements in human body composition

Back 25

1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen

Front 26

Molecule

Back 26

2 or more atoms held together by chenical bond

Front 27

H+H = H2 is an example of what?

Back 27

A molecule of the element hydrogen
If 2 or more atoms of the same element combine, it is a molecule of that element

Front 28

Compound

Back 28

When 2 or more atoms of different elements bind

Front 29

Chemical purity of compounds

Back 29

Every atom of h2O is still H2O

Front 30

Mixtures

Back 30

2 or more components physically mixed

Front 31

3 basic types of mixtures

Back 31

1. Solutions
2. Colloids
3. Suspensions

Front 32

Solutions

Back 32

- homogeneous
- can be gas, liquid or solid

Front 33

Homogeneous mixture

Back 33

Any sample taken from any part will have same composition
Ie air, seawater

Front 34

Solvent

Back 34

-substance present in greatest amount in a solution
(Usually liquid)

Front 35

Solutes

Back 35

Substances present in lesser amounts in a solution

Front 36

2 ways of representing concentration of a solution

Back 36

- percentage
- molarity

Front 37

Molarity

Back 37

Moles per liter

Front 38

Moles

Back 38

Atomic weight or molecular weight in gramd

Front 39

Avogardo's number definition

Back 39

One mole of any substance ALWAYS contains EXACT same number of solute particles

Front 40

Avogardo's number formula

Back 40

6.02 x 10 to the 23rd power

Front 41

Colloids

Back 41

Aka emulsions
Heterogeneous
Often translucent or milky
Sol-gel transformation

Front 42

Heterogeneous

Back 42

Composition is dissimilar in different areas of mixture

Front 43

Sol-gel transformation

Back 43

Ability to change from fluid (sol) to more solid gel

Ie Jello

Front 44

Suspensions

Back 44

Heterogeneous
Large, visible solutea
Ie sand & water
Blood

Front 45

Distinguishing mixtures from compounds

Back 45

Mixtures have no chemical bond
Mixtures can often be physically separated
Some mixtures are heterogeneous