Atoms elements and mixtures

Question 1

What is covalent bonding

Answer 1

When two or more non-metals join together

Question 2

What are elements?

Answer 2

Substances that cannot be broken down into anything simpler

Question 3

What are elements?

Answer 3

Substances that cannot be broken down into anything simpler

Question 4

What are the diatomic elements?

Answer 4

N2,H2,F2,Cl2,Br2,O2,I2

Question 5

Mass of protons

Answer 5

1

Question 6

Mass of neutrons

Answer 6

1

Question 7

Mass of electrons

Answer 7

1/1840

Question 8

Charge of proton

Answer 8

+1

Question 9

Charge of electron

Answer 9

-1

Question 10

Charge of neutron

Answer 10

0

Question 11

What is the mass number?

Answer 11

The bigger number and the sum of the number of neutrons and protons

Question 12

What is the atomic number also known as and why

Answer 12

It is also known at the proton number because it’s how many protons there are

Question 13

What is the similarity between protons and electrons

Answer 13

There are generally the same number of them

Question 14

In electronic structure of an atom, what is the max amount of electrons the first shell can hold?

Answer 14

2

Question 15

In electronic structure of an atom, what is the max amount of electrons the second shell can hold?

Answer 15

8

Question 16

In electronic structure of an atom, what is the max amount of electrons the third shell can hold?

Answer 16

8

Question 17

The general eclectron rule is 2,8,8 and whatever else, true or false

Answer 17

True

Question 18

What are columns in the periodic table called

Answer 18

Groups

Question 19

What are rows called in the periodic table?

Answer 19

Periods

Question 20

What’s a way to remember if columns are vertical or horizontal?

Answer 20

The collumbus is has vertical columns

Question 21

Elements in the same group have similar chemical properties true or false

Answer 21

True

Question 22

What do atoms of elements in the same group have the same number of?

Answer 22

Electrons in their outer shell

Question 23

So if Li is in group one and so is Na what number of electrons do they have in their outer shell

Answer 23

1

Question 24

What is Ionic bonding

Answer 24

When a metal and non metal join together

Question 25

What do non metal atoms make when they join together

Answer 25

A molecule

Question 26

Eg sodium oxide has sodium in it and oxygen in it so it is a

Answer 26

Ionic compound

Question 27

EG carbon dioxide has carbon and oxygen in it so it is

Answer 27

Covalent compound

Question 28

How to tell what is a non metal in the periodic table

Answer 28

Hydrogen is a non metal and the whole of group 8 and 7 is too. Then it goes up in a diagonal so whole of group 6 apart from polonium and then most of group 5 but not tin or bismuth and keeps going till it gets to group three with boron being the only non metal in that group

Question 29

Who came up with the original idea of atoms as the smallest things everything’s made of?

Answer 29

Democritus - 460 BC

Question 30

Who discovers neutrons

Answer 30

Chadwick

Question 31

How to work out relative atomic mass

Answer 31

(Relative isotopic mass (no 1) * %) + (relative isotopic mass (no 2) *%) all divided by 100

Question 32

Group is vertical , true or false

Answer 32

True

Question 33

Period is vertical true or false

Answer 33

False it’s horizontal

Question 34

What do memebrrs of the same period have in common

Answer 34

They have the same number of electron shells: eg na and mg both in period 3 have 3 electron shells

Question 35

Electron structure basic:

Answer 35

2,8,8

Question 36

What are noble gases

Answer 36

Gases that have a full outer shell of electrons (8 electrons)

Question 37

What are alkali metals

Answer 37

Metals in group 1 that only need to lose one electron to get a full shell- very reactive

Question 38

Are noble gases very reactive or not?

Answer 38

Not, cause they have a full outer shell of electrons

Question 39

What are halogens

Answer 39

In group 7, very reactive only need to gain one electron to get a full outer shell

Question 40

Do metals lose or gain electrons

Answer 40

Lose electrons

Question 41

Do non metals lose or gain electrons

Answer 41

Gain electrons

Question 42

If u have a element eg: Na with a mass number of 14 and an atomic number of 7, what is the difference in an element exactly the same apart from it is Na2-

Answer 42

Have same amount of protons and neutrons but 9 electrons instead

Question 43

what is the rfm value

Answer 43

relative formula mass

Question 44

what is the relative formula mass also called

Answer 44

Mr

Question 45

how do u calculate the relative formula mass

Answer 45

just add all the mass numbers of the elements in the substance up, eg if it was NaN03 then it would be whatever Na is plus Nitrogen plus 3 times whatever oxygen is

Question 46

what is the % by mass

Answer 46

add up the relative formula mass of the substance, divide it by the overall relative formula mass from the substance and then times it by 100 for percentage