Periodic Table Flashcards
(31 cards)
Period
Rows
———-
———
————
Family or Group
Collum
| |
| |
| |
Properties of metals (5) and where they are on table
Conduct heat and electricity Ductile and malleable Lustrous React to acids Solid at room temp
Left of step
Properties of Non-Metals (5) and where they are on the table
Poor conductivity Not malleable or ductile No lusted No reaction to acids Many are gaz at room temp
Right of step
Hydrogen (metal or non metal)
Non metal
Semi-Metal / Metaloids
Some characteristics of metal
Border the step
Within a period the elements have the same number of ____
Shells
Within a family the elements have the same number of ___
Valance electrons
Alkali Metals. Group number and 5 characteristics
Group 1 React to water Soft Not hydrogen Stored in oil Not found in elemental state
Alkaline earth metals group number and 4 characteristics
Group 2 Malleable and reactive Burn easy Not found in elemental state Can be exposed to air
Halogens group number and 4 characteristics
Non metal
React easy
Form compounds
Disinfectant
Noble gases group number and 4 characteristics
Group 8 Stable Includes helium Can be found in elemental state Full valance shell
Atomic radius change in period and family
Period: left to right gets smaller (number of protons and electrons increase so there is a bigger of force of attraction towards the inside
In a family: gets bigger (more shells)
Properties of elements that have trends in the periodic table (5)
Melting point Boiling point Density First ionization energy Electromagnetivity
Atomic number
Represents number of protons (equal to electrons)
Relative atomic mass
Reletive atomic mass is the mass of an atom measured by comparison to the reference element carbon 12
Unity is AMU
1 AMU= ?g
1.66 X 10^-24
Mass number
Rounded relative atomic mass
Isotopes
Different form of the same element with a different number of neutrons
Atomic number stays the same but mass number changes
How many electrons in every shell
1) max 2
2) max 8
3) max 18
Lewis notation
Element in middle
Number of valance electrons surrounding element in dot form
Rutherford bohr
Make a nucleus and put the number of protons with a + sign in the middle
Make the number of shells around nucleus
Place electrons
Somplified atomic maodel
Draw nucleus, inside put the number of protons and neutrons.
Arcs represent the number of shells. Number of electrons on the shells
Ball and stick atomic model
Atom is a ball and bonds are drawn as longs. Size of ball corresponds to number of shells