Atomic structure And the periodic table

Question 1

What does filtration do

Answer 1

Filtration separates insoluble solids from liquids

Question 2

Two ways to separate soluble solids

Answer 2

Evaporation and crystallization

Question 3

How does simple distillation work

Answer 3

The solution is heated the lowest boiling point evaporates first

Question 4

What is one problem with simple distillation

Answer 4

Only separate things with very different boiling points

Question 5

Who was John Dalton

Answer 5

He described an atom as solid sphere

Question 6

JJ Thompson

Answer 6

Atoms weren’t solid he measured the charge, And an atom must have even smaller negatively charged Particles

Question 7

Plum pudding model

Answer 7

An atom has a ball of positive charge with electrons stuck in it

Question 8

Who proved the plum pudding model wrong

Answer 8

Rutherford from the famous alpha particle scattering experiment ,We are positively charged alpha particles were fired at a thin sheet of Gold

Question 9

What did Rutherford come up with as A new model

Answer 9

The nuclear model of an atom

Question 10

Niels Bohr model

Answer 10

That electrons are held in different orbitals or shells

Question 11

Hey certain number of electrons are allowed in each shell what are these numbers

Answer 11

2, 8 and In the third shell eight

Question 12

Describe the electron shape for nitrogen 7

Answer 12

This has 7 Protons seven electrons, thus 2 in 1st shell and 5 in the following Shell.

Question 13

The following diagram shows the electron configuration for sodium with 11 electrons

Answer 13

Question 14

Who is Dimitri Mendeleev 1869

Answer 14

Formed the periodic table, isolating elements in the correct groups and periods.

Question 15

What did the group numbers tell us in the periodic table

Answer 15

The group refers to the number of electrons in the outer shell

Question 16

What do metal elements form when they react

Answer 16

Positive ions

Question 17

Are most elements in the periodic table metals

Answer 17

Yes

Question 18

What type of bonding do metals have

Answer 18

Metallic bonding, they are strong, they are great at conducting heat and electricity, and have a high boiling points

Question 19

Can transition metals have more than one element and give an example

Answer 19

Yes copper +1 or copper +2 and Cu+3 , They can also make good catalysts

Question 20

What are group one metals

Answer 20

Alkali metals

Question 21

Properties of alkali metals

Answer 21

With one electron they increase in reactivity as you move down the group. Low melting and boiling points highly reactive

Question 22

Alkali metals form ionic compounds with nonmetals are they colorless and soluble

Answer 22

Yes, white solid that dissolves in water to form colourless solution

Question 23

An example of a metal dissolving in water chemical equation

Answer 23

Question 24

Group 1 metals react with oxygen give an example

Answer 24

Metal oxide formed lithium oxide Li2 0

Question 25

Give an example of some halogens

Answer 25

Fluorine a yellow gas, Chlorine: dense green gas, Bromine red brown volatile liquid

Question 26

As you go down the halogen grouping it becomes less reactive but what happens to the melting point

Answer 26

Higher melting and boiling points.

Question 27

What is the bonding between halogens And non metals

Answer 27

Covalent bonding such as HCl

Question 28

What is the bonding between Halogens and metals

Answer 28

Ionic bonding Such as Na+ Cl

Question 29

Can the displacement reaction occur with halogens

Answer 29

Displacement reaction can occur between more reactive halogens and the salt of the less reactive one E.g. chlorine can displace ,Bromine

Question 30

What are group 0 elements known as

Answer 30

Noble gases

Question 31

Why does the boiling point increase in noble gases as you move down the group?

Answer 31

Boiling point increases due to the number of electrons in each atom leading to greater intermolecular forces.

Question 32

Balance the equation FE + CL2 - FECL3

Answer 32

2 iron +3 chloride2

Question 33

Sulfuric acid

Answer 33

H2So4

Question 34

Sodium carbonate

Answer 34

NaCo3

Question 35

Calcium chloride

Answer 35

CaCl

Question 36

Hydrochloric acid

Answer 36

Hcl

Question 37

Carbon dioxide from incomplete combustion

Answer 37

Co

Question 38

sodium chloride

Answer 38

NaCl

Question 39

Chemical formula for ammonia

Answer 39

NH3

Question 40

Compounds form with nonmetals consist of molecules

Answer 40

Each atom shares an electron with another atom covalent bonding

Question 41

What happens in a compound word is formed by a metal and a nonmetal

Answer 41

The metal atom loses an electron to form positive ions and nonmetal atom gains an electron to form a negative ion

Question 42

Compounds formed from metals and nonmetals Consist of

Answer 42

Ions

Question 43

Making bonds examples

Answer 43

Involves atoms giving away, taking or sharing electrons It’s an exothermic process

Question 44

What is a compound

Answer 44

When elements react, atoms combine with other atoms

Question 45

Name a good example of an isotope

Answer 45

An element with a different number of neutrons such as carbon 12 carbon 13

Question 46

What is an element

Answer 46

That only contains atoms with the same number of protons

Question 47

What particle decides, what type of atom it is

Answer 47

Number of protons in the nucleus describes type of atom

Question 48

The mass number ?

Answer 48

Total number of protons plus neutrons

Question 49

What is the atomic number

Answer 49

The number of protons

Question 50

Radius of an atom

Answer 50

0.1 nm that is 1×10(-10)

Question 51

The difference between inter and intra molecular Force

Answer 51

Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forces are forces that exist between molecules.

Question 52

What is the force that holds electrons in place

Answer 52

The electromagnetic force