periodic table

Question 1

What is an isotope

Answer 1

an isotope is an atom with the same number of protons and different amounts of neutrons

Question 2

What are the elements in the periodic table listed in order of

Answer 2

atomic number

Question 3

What is the name of the group 7 elements

Answer 3

halogens

Question 4

How many shells of electrons does potassium have

Answer 4

four

Question 5

Give the chemical symbol of the group 6 element in period four

Answer 5

Se

Question 6

Which atomic model showed up most of the atom is empty space

Answer 6

Nuclear model

Question 7

What is the state of matter of fluorine

Answer 7

halogen

Question 8

What is the trend in melting points in group 7 elements

Answer 8

It gets higher as you go down

Question 9

What is the relative charge of a proton

Answer 9

+1

Question 10

What is the relative charge of a neutron

Answer 10

0

Question 11

What is the relative charge of an electron

Answer 11

-1

Question 12

What is the relative mass of a proton

Answer 12

1

Question 13

What is the relative mass of a neutron

Answer 13

1

Question 14

What is the relative mass of an electron

Answer 14

1/1840

Question 15

What is the gas given off when lithium reacts with water

Answer 15

Hydrogen

Question 16

what is the maximum number of electrons that fit onto the second shell

Answer 16

eight

Question 17

What is the maximum number of electrons that fit onto the first shell

Answer 17

Two

Question 18

What is the maximum number of electrons that fit onto the third shell

Answer 18

Eight

Question 19

what is the maximum number of electrons that fit onto the fourth shell

Answer 19

18

Question 20

What is the chemical symbol for tungsten

Answer 20

W

Question 21

what is the mass number of vanadium 

Answer 21



51

Question 22

Calcium is more reactive than magnesium true or false

Answer 22

True

Question 23

How many electrons are there in bromine

Answer 23

35

Question 24

What is the color of the flame produced when potassium reacts with water

Answer 24

lilac

Question 25

What electron arrangement in sodium

Answer 25

two, eight, one

Question 26

Which subatomic particle was not in the nuclear model

Answer 26

Neutron

Question 27

What element is a red brown liquid

Answer 27

bromine

Question 28

What are alkali metals stored in and why

Answer 28

they are stored in paraffin because they are very reactive to oxygen

Question 29

What is mass number

Answer 29

Number of protons plus the number of neutrons

Question 30

How many neutrons are there in boron

Answer 30

six

Question 31

which metallic element is a liquid at Room temperature

Answer 31

Mercury

Question 32

How many protons are there in the selenium

Answer 32

34

Question 33

Why do alkali metals float on water

Answer 33

they are less dense

Question 34

what is the state Matter of astatine

Answer 34

Solid

Question 35

What is the white solid product when calcium reacts with water

Answer 35

calcium hydroxide

Question 36

What is the trend in boiling points of the group 7 elements

Answer 36

it gets higher as you go down

Question 37

How do you find the number of electrons in an element

Answer 37

The number of electrons in an element is the same is the atomic number of the element. for example sodium, has an atomic number of 11 which means the number of electrons is 11-

Question 38

How do you find the number of protons in an element

Answer 38

The number of protons in an element is the same as the atomic number of the element. for example boron, Has an atomic number of five which means the number of protons is five+

Question 39

How do you find the number of neutrons in an element

Answer 39

to find the number of neutrons in an element take away the atomic number from the mass number. for example sodium, the mass number is 23 and the atomic number is 11 to find the number of neutrons you do 23 which is the mass number take away 11 which is the atomic number

Question 40

how did Mendeleev order his periodic table

Answer 40

Mendeleev ordered his periodic table by atomic weight. The current model of the periodic table is ordered by atomic number