Chemistry Science In Action: Unit 2 Section 2

Front 1

Democritus

Back 1

- believed that mattar could be broken down into indivisible bits called"atmos", giving each material it's own unique set of properties

Front 2

Aristotle

Back 2

- everything was made up of earth, fire, water, air

Hint 2

___,___,___,___, long ago all nation lived in harmony, everything changed when the fire nation attack. Only the avatar master of all four elements could stop them, but when the world needed him most, he vanished....

Front 3

Alchemists

Back 3

- chemist but not scientists

- change metals to gold

- conducted the first experiments

- wrote the first chemistry textbook and

-invented glassware like beakers and plaster of Paris

Front 4

Bolye

Back 4

Studied gases and was convinced with democritus' idea that matter was made up of tiny particles

Front 5

Lavoiser

Back 5

- developed the naming system for chemicals

- called the"father of modern chemistry" because of his experimental and theoretical work

Front 6

Dalton

Back 6

- matter was made up of elements

- elements were pure substances

- the atoms of each element have a different mass than atoms in other elements

- thought of atoms as solid spheres(Bullard ball model)

Front 7

Thomson

Back 7

- discovered a subatomic particle( electron)

- rasin bun model: positive sphere with electrons embedded in it

- the negative electrons balance the positive sphere, so the whole atom has no electrical change

Front 8

Nagaoka

Back 8

Solar system model- positive sphere with electrons orbiting it

Front 9

Rutherford

Back 9

Used gold foil experiment tk show that atoms have a nucleus

Front 10

Bohr

Back 10

- electron shells model- electrons move in specific shells or orbits around the nucleus

- electrons jump between shells by gaining or losing energy

Front 11

Chadwick

Back 11

- Discovered the proton(positively charged particles) and the neutron( neutral particles) in the nucleus

- the neutron and the proton contain most of the mass of an atom

Front 12

Heisenberg/quantum model

Back 12

The Atom is a cloud of electrons surrounding a positive nucleus

Front 13

Back 13

Alkali metals

Front 14

Back 14

Alkali earth metals

Front 15

Back 15

Transition metals

Front 16

Back 16

Halogens

Front 17

Back 17

Noble gas

Front 18

Back 18

Metals

Front 19

Back 19

Metalloids

Front 20

Back 20

Non-metals

Front 21

Back 21

Thomson- raisin bun model

Front 22

Back 22

Nagaoka- solar system of elections

Front 23

Back 23

Dalton- billiard ball model

Front 24

Back 24

Rutherford- existence of a nucleus

Front 25

Back 25

Bohr- electronic shells

Front 26

Back 26

Heisenberg - cloud of electrons

Front 27

Back 27

Chadwick- proton and neutron in nucleus

Front 28

Vertical column

Back 28

Families or groups

Front 29

Horizontal rows

Back 29

Periods

Front 30

How did families/groups get their names

Back 30

Because they have similar chemical properties

Front 31

What happened each time you go down a row on the periodic table?

Back 31

Everytime you go down, a new electron shell is added while electrons added moving from left to right through that row

Hint 31

Each period will see new outer shells with electrons are added moving to the right

Front 32

Back 32

1. Atomic number

2. Symbol

3. Atomic mass

4. Ion charge

5. Name

Front 33

Atomic number

Back 33

- Show you how protons are in the nucleus of one atom

- because atoms are neutral , the number of protons =the number of electrons

Front 34

Atomic mass

Back 34

- below the elements name

- mass of protons + mass of neutrons

Front 35

Mass number

Back 35

Number of protons + number of neutrons