Fall Final Exam

Question 0

Derived units are

Answer 0

Calculated

Question 1

Si unit for temperature

Answer 1

Kelvin

Question 2

Example of derived unit

Answer 2

Density

Question 3

Law of conservation

Answer 3

Matter cant be creates or destroyed

Question 4

As you move across the periodic table the radii of atoms get

Answer 4

Smaller

Question 5

As you move down the periodic table the radii of atoms get

Answer 5

Bigger

Question 6

As you move across the periodic table the radii of negative ions get

Answer 6

Bigger

Question 7

Chemistry

Answer 7

The study of matter and the changes it undergoes

Question 8

Matter

Answer 8

Anything that has mass and takes up space

Question 9

Mixtures

Answer 9

2 or more substances combined that each retain their own properties

Question 10

Filtration

Answer 10

Separation using a porous membrane

Uses particle size

Question 11

Distillation

Answer 11

Separation based on boiling point

Usually 2 liquids

Question 12

Crystallization

Answer 12

Based on evaporation

Used to separate solid from liquid

Question 13

Chromatography

Answer 13

Separation based on the afinity of the sample to the mobile phase to the stationary phase

Question 14

Hererogenous mixture

Answer 14

Not mixed evenly

Not uniform

Question 15

Homogenous mixture

Answer 15

Has uniform composition

Aka: solutions

Question 16

Rows on periodic table

Answer 16

Called periods

Question 17

Columns called

Answer 17

Groups

Families

Question 18

Accuracy

Answer 18

How close you are to the accepted value

Question 19

Precision

Answer 19

How close your measurements are to each other

Question 20

Percent error

Answer 20

Error➗accepted value✖️100＝actual/accepted

Question 21

States of matter

Answer 21

Solid
Liquid
Gas

Question 22

Suspension

Answer 22

Particles that settle out

Ex) chocolate milk, salad dressing

Question 23

Colloid

Answer 23

Particles that dont settle out

Ex) fog, milk

Question 24

Element

Answer 24

A pure substance that is composed of identical atoms

Question 25

Democritus

Answer 25

Matter is composed mainly of empty space through which atoms move

Question 26

Aristotle

Answer 26

Disagreed with democritus cause of religious beliefs

Question 27

Dalton

Answer 27

All matter is made from very small particles called atoms | Called the solid ball theory of the atom

Question 28

Thomson

Answer 28

Plum pudding model/chocolate chip cookie model Cathode ray tube to show that atoms had negative particles 1st to discover particle smaller than the atom

Question 29

Milliken

Answer 29

Found that the charge on the electron=1-

Question 30

Rutherford

Answer 30

Found the positive nucleus | Gold foil experiment

Question 31

Chadwick

Answer 31

Found the neutron | Needed a particle that was about as heavy as the proton but neautral

Question 32

Modern atomic theory

Answer 32

Atom consists of 3 main particles Protons Electrons Neutrons

Question 33

Proton

Answer 33

Symbol: P＋ Location: nucleus Charge: 1+ Mass: 1amu

Question 34

Neutron

Answer 34

Symbol: N。 Location: nucleus Charge: 0 Mass:1amu

Question 35

Electron

Answer 35

Symbol:e- Location: electron cloud Charge: 1- Mass:0

Question 36

Isotope

Answer 36

Atom of the same element with different number of neutrons

Question 37

Wave length

Answer 37

Shortest distance between 2 identical points on a wave

Question 38

Frequency

Answer 38

The number of waves that pass a given point in 1 second

Question 39

Amplitude

Answer 39

The distance from the height of the wave to the midline

Question 40

Max planck

Answer 40

As energy is added to a process colors changed

Question 41

Quantum

Answer 41

Energy was gained or lost in specific amounts

Question 42

Photoelectric effect

Answer 42

Electrons in matter are struck together by light they absorb energy to become excited

Question 43

Einstein

Answer 43

1 quanta of energy needed to move an electron

Question 44

Neils bohr

Answer 44

Relate the color of light seen when an atom absorbs energy to the frequency of the light given off

Question 45

Aufbau principle

Answer 45

Electrons will occupy the lowest energy level possible

Question 46

Paulis exclusion principle

Answer 46

For 2 electrons to occupy an orbital they must have opposite spins

Question 47

Hunds rule

Answer 47

Electrons fill orbitals with equal energy 1 at a time before pairing

Question 48

Valence electrons

Answer 48

Electrons in the outer most energy level of an atom

Question 49

Lavoiser

Answer 49

List of the 23 known elements

Question 50

Newlands

Answer 50

Law of octaves | Increasing atomic mass

Question 51

Meyer/mendeleev/moseley

Answer 51

Menedeleev: father of periodic table | Left blank spaces

Question 52

Moseley

Answer 52

Areanged by atomic number

Question 53

Solution

Answer 53

Solvent+solute

Question 54

Solute

Answer 54

The substance that is dissolved

Question 55

Solvent

Answer 55

Substance that does the dissolving