Aromic Theory And Periodic Table

Question 1

A substance that is made of only one kind of atom is

Answer 1

An element

Question 2

Subatomic

Answer 2

Smaller than an atom

Question 3

All atoms of the same element have he same number of

Answer 3

Protons

Question 4

An ion

Answer 4

An atom that has gained or lost electrons

Question 5

An isotope

Answer 5

An atom that has a different number of neutrons

Question 6

The charge of an atom is

Answer 6

Neutral

Question 7

The charge of the nucleus is

Answer 7

Positive

Question 8

How do you find mass number

Answer 8

Add protons and neutrons

Question 9

Atomic mass

Answer 9

Average mass for atoms of that element

Question 10

Units used for mass

Answer 10

Atomic mass unit (A.M.U) for atoms

Grams for other things

Question 11

Units for volume

Answer 11

Liters L

Milliliters ML

Question 12

Experimental variable

Answer 12

Thing being tested

Question 13

Controlled variable

Answer 13

Things kept constant and controlled

Question 14

Depending variable

Answer 14

Measured, recorded, counted
Depends on experimental variable
Y axis

Question 15

Independent variable

Answer 15

Known before experiment
Includes experimental
X axis

Question 16

Control set up

Answer 16

Normal
Doesn’t change anything
Used to compare results
New and old soap control is the old soap

Question 17

If——–

Then——

Answer 17

If–prediction—-

Then—expected results—

Question 18

How many meters in a kilometer

Answer 18

1,000

Question 19

How many centimeters in a meter

Answer 19

100

Question 20

How many mililiters in one meters

Answer 20

1,000

Question 21

How many ML in a liter

Answer 21

1,000

Question 22

How many milligrams in a gram

Answer 22

1,000

Question 23

How many grams In a kilogram

Answer 23

1,009

Question 24

Density formula

Answer 24

D = M divided by V

Question 25

How to find proton

Answer 25

Atomic #

Question 26

How to find electron

Answer 26

Neutral atom it's the atomic number | Charge it is the charge number C-14 -1

Question 27

How to find neutrons

Answer 27

Mass #- atomic#

Question 28

Oxidation number

Answer 28

of electrons gained or lost to get full outer energy level. + because adding positive to get rid of the electron

Question 29

Period

Answer 29

Horizontal 1 to 7

Question 30

Columns

Answer 30

Groups, vertical, 1-18

Question 31

Valence electrons

Answer 31

Number of electrons in the outermost shell, the ones that interact

Question 32

Lewis for diagram

Answer 32

- ----15 - -4........3 - -8........7 - ----26

Question 33

Democratus

Answer 33

Named the atom | Big black dot for diagram

Question 34

Lavoisier

Answer 34

Wrote the law of conservation of matter

Question 35

Bohr

Answer 35

Found out that electrons formed different energy levels | Bohr diagram

Question 36

Chadwick

Answer 36

Discovered the neutron

Question 37

Mendeleev

Answer 37

First periodic table

Question 38

Thomson

Answer 38

Discovered the electron | Plum pudding model

Question 39

Rutherford

Answer 39

Solar system model | Discovered proton and nucleus

Question 40

Who used a cathode ray tube to see the path of praticles

Answer 40

Thomson

Question 41

When Thomson discovered negative particles this told him that

Answer 41

There where positive particles somewhere

Question 42

Who was the first person to see the smaller piece of matter was an atom

Answer 42

Democratus

Question 43

What is the most modern theory for the structure of an atom

Answer 43

Wave model

Question 44

Which families are most reactive

Answer 44

Alkali metals and alkaline earth metals are second

Question 45

Where is it easiest to steal electrons

Answer 45

Bottom left corner

Question 46

Metal location/ three l

Answer 46

Left Large radius Low ionization

Question 47

What metals are highly radioactive

Answer 47

Lanthanides and actinides

Question 48

Which family is inert

Answer 48

Nobel gases

Question 49

What metals have different oxidation numbers depending on environment

Answer 49

Transition metals

Question 50

Which non metals are highly reactive

Answer 50

Halogens, for salts

Question 51

How do you find valence electrons an element has using the periodic table

Answer 51

The ones place of the group number

Question 52

How does the periodic table tell how many energy levels an element has

Answer 52

The row number tells the number of energy levels

Question 53

What happens to the atomic radius as you move left to right across a period

Answer 53

Atomic radius decreases as you move across a row because the increasing number of protons increases the electromagnetic force that pulls the electrons close to the nucleus.

Question 54

What happens to atomic radius as you've too to bottom down a group

Answer 54

Atomic radius increases as you move down a group because the increasing number of energy levels increases the distance between the electrons and the nucleus.

Question 55

What happens to the ionization energy as you move left to right across a period

Answer 55

Ionization energy increases as you move across a row because the increasing number of protons increases the electromagnetic force that holds the electrons to the atom, making it more difficult to remove an electron.

Question 56

What happens to the ionization energy as you move top to bottom down a group

Answer 56

Ionization energy decreases as you move down a group because the increasing number of energy levels increases the distance between the electrons and the nucleus, decreasing the force of attraction and making the electrons easier to remove.

Question 57

What is ionization energy

Answer 57

Ionization energy is the amount of energy needed to remove the outermost electron. (ionizing the atom)

Question 58

What is electronegativity

Answer 58

Electronegativity is the amount of attraction that a nucleus has for electrons….how much electromagnetic force of attraction an atom generates