Pink Unit (2) — Atoms

Question 1

Discovered by JJ Thompson, he called them corpuscles

Answer 1

E

Question 2

These give the nucleus a positive charge

Answer 2

P

Question 3

Makes isotopes different from each other

Answer 3

N

Question 4

Mass equals one AMU

Answer 4

P & N

Question 5

Found outside of the nucleus

Answer 5

E

Question 6

Numbers of these can change

Answer 6

P & E & N

However, if a proton amount is changed it will change the identity of the element

Question 7

Tiniest mass of all

Answer 7

E

Question 8

No charge, electrically neutral

Answer 8

N

Question 9

According to wave mechanics, you can never know the exact location of these only the probability

Answer 9

E

Question 10

These two particles have the same mass

Answer 10

P & N

Question 11

Negatively charged

Answer 11

E

Question 12

Number never changes in an atom

Answer 12

P

Question 13

These particles add up to an atoms mass number

Answer 13

P & N

Question 14

Found in nucleus

Answer 14

P & N

Question 15

Rutherford and Bohr thought these orbited the nucleus like planets around the sun

Answer 15

E

Question 16

Charge particles

Answer 16

P & E

Question 17

Found in energy levels

Answer 17

E

Question 18

Positively charged

Answer 18

P

Question 19

Mass equals 1/1840 amu

Answer 19

E

Question 20

The number of these always equal to the atomic number

Answer 20

P

Question 21

Carbon 12 and carbon 14 are different because of

Answer 21

N

Question 22

Positive alpha particles were deflect it off the nuclear of gold atoms because of these

Answer 22

P & N

Question 23

In a neutral atom, these equal the number of protons

Answer 23

E

Question 24

Composed of smaller particles called quarks

Answer 24

P & N

Question 25

About 1/12 of the mass of a carbon atom (or one AMU)

Answer 25

P & N

Question 26

Came up with the idea that matter is composed of tiny particles

Answer 26

Democritus

Question 27

Call particles átomos (uncuttables)

Answer 27

Democritus

Question 28

Proposed law of conservation of mass

Answer 28

Antoine Lavoisier

Question 29

Determines an elements exist as discreet pockets of matter

Answer 29

Dalton

Question 30

Name the electrons corpuscles through the cathode ray experiment

Answer 30

JJ Thompson

Question 31

Created the plum putting model

Answer 31

JJ Thompson

Question 32

Discover that the entire positive charge of the atom must be concentrated in a very small area called the nucleus

Answer 32

Ernest Rutherford

Question 33

Named protons as well as determined that most of the atom is empty space through a gold foil experiment

Answer 33

Ernest Rutherford

Question 34

Started with Rutherford and invented the Bohr model, representing the location of electrons

Answer 34

Niels Henrik David Bohr

Question 35

Created the quantum theory that electrons weren’t particles are waves in location could be determined only by probability. Made the cloud model.

Answer 35

Werner Karl Heisenberg

Question 36

Came up with the name of the neutron

Answer 36

Chadwick

Question 37

The number changes for different isotopes

Answer 37

N

Question 38

Involved in bond formation

Answer 38

E

Question 39

Who is the father of atomic theory?

Answer 39

John Dalton

Question 40

Elements are composed of small indivisible particles called atoms

Answer 40

Dalton’s first postulate Not accurate

Question 41

Atoms of the same element are identical. atoms of different elements are different

Answer 41

Dalton’s second postulate Not accurate

Question 42

Atoms of different elements, combine and simple proportions to create a compound

Answer 42

Dalton’s third postulate

Question 43

In a chemical reaction, items are not created, destroyed, or changed, only rearranged

Answer 43

Dalton’s fourth postulate

Question 44

Electron cloud mass vs volume

Answer 44

.1% mass 99.9% volume

Question 45

Average atomic mass

Answer 45

(%abundance/100) x mass

Question 46

Father of the periodic table

Answer 46

Dmitri mendelev

Question 47

Malleable

Answer 47

Metals

Question 48

Ductile

Answer 48

Metals

Question 49

Shiny, gray

Answer 49

Metals

Question 50

Conductors

Answer 50

Metals

Question 51

Usually solid at room temp

Answer 51

Metals

Question 52

Metals mixed make ——-

Answer 52

Alloys

Question 53

Poor conductors

Answer 53

Non Metals

Question 54

Solids are brittle

Answer 54

Non Metals

Question 55

Light is a form of energy and can be ——- or a ——-

Answer 55

Photon or energy wave

Question 56

The distance between equivalent points on the wave

Answer 56

Wavelength

Question 57

The height of a wave from origin to crest or origin to trough

Answer 57

Amplitude

Question 58

The highest point of a wave

Answer 58

Crest

Question 59

The lowest point of a wave

Answer 59

Trough

Question 60

The number of waves at pass a given point per second

Answer 60

Frequency (v)

Question 61

Upside down y

Answer 61

Y

Question 62

Speed of light =

Answer 62

Wavelength x frequency

Question 63

Electromagnetic spectrum

Answer 63

Radio, micro, infrared, visible, UV, x rays, gamma

Question 64

How do you excite electrons

Answer 64

With heat or electricity

Question 65

Once electrons gain energy, they ____ to the next ______ level

Answer 65

Jump Energy

Question 66

Electrons don’t want to be excited, so they fall down to the lowest energy level, and (what happens?)

Answer 66

Energy is released and we see color in the form of photons

Question 67

What part of Dalton’s atomic theory was disproved by Thompson’s experiment?

Answer 67

Thompson discovered electrons, which disprove that atoms were indivisible

Question 68

Which elements don’t follow the rule about valence electrons being the same and determining chemical properties

Answer 68

Helium and transition metals

Question 69

What causes an electron to be in an excited state?

Answer 69

It has gained energy