Atomic Structure and the Periodic Table

Atomic Structure and the Periodic Table

?
  • Created by: aizaali
  • Created on: 12-04-17 13:18
Atom
The smallest particle of matter that can take part in a chemical reaction
1 of 31
Element
Substance that consists of one type of atom
2 of 31
Molecule
A group of atoms bonded together, representing the smallest unit of a chemical compound that can take part in a chemical reaction
3 of 31
Neutron number=
Mass number - Atomic number
4 of 31
Atoms in the same group of the periodic table...
Have the same number of electrons in their outer shell
5 of 31
Atoms in the same period of the periodic table...
Have the same number of energy levels, where a new energy level begins
6 of 31
Atoms of the same element...
Have the same number of protons and electrons
7 of 31
Isotopes
Atoms of the same element with the same number of protons but a different number of neutrons
8 of 31
Relative atomic mass
An average value that takes account of the abundance of the isotopes of the element
9 of 31
RAM=
(x+y)+(w+z) / total number
10 of 31
Elements with full outer energy levels are...
Stable and unreactive
11 of 31
Mendeleev knew that...
The elements known were organised into order of the relative atomic mass
12 of 31
Compounds' elements can only be separated by...
Chemical reactions
13 of 31
Mixtures have no...
Chemical bonds between atoms of the different substances in a mixture
14 of 31
Filtration separates...
An insoluble solid from a liquid
15 of 31
Evaporation separates...
Solution of soluble solid in a liquid
16 of 31
Distillation separates...
Solvent from a solution
17 of 31
Chromatography separates...
Dyes/soluble solutions
18 of 31
Fractional distillation separates...
Mixture of liquids
19 of 31
Diatomic molecules =
HOFBrINCl
20 of 31
Group 1 elements are...
Alkali metals
21 of 31
Features of Alkali metals are...
Silver/grey, soft, tarnish quickly, very unreactive, good conductors of electricity, densities are below 1, float on water
22 of 31
Group 7 elements are...
The Halogens - coloured elements, poisonous, diatomic molecules
23 of 31
As you descend down the group, the Halogens...
Increase in atomic size, decrease in reactivity, increase in melting point, increase in boiling point
24 of 31
More reactive halogens...
Displace less reactive halogens in halide solution
25 of 31
A halogen becomes a halide when...
It becomes an ion or gains an electron
26 of 31
Group 0 elements are...
The Noble gases
27 of 31
Noble gases have...
Low boiling points and low densities
28 of 31
Noble gases are used for...
Lights, MRI scanners
29 of 31
Transition metals are...
Good conductors of heat and electricity, dense, strong, shiny and hard, high melting/boiling points, malleable and ductile
30 of 31
Chemical properties of transition metals
Not very reactive with water, coloured compounds, used as catalysts
31 of 31

Other cards in this set

Card 2

Front

Substance that consists of one type of atom

Back

Element

Card 3

Front

A group of atoms bonded together, representing the smallest unit of a chemical compound that can take part in a chemical reaction

Back

Preview of the back of card 3

Card 4

Front

Mass number - Atomic number

Back

Preview of the back of card 4

Card 5

Front

Have the same number of electrons in their outer shell

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all The Periodic Table resources »