Topic 6 Periodic Table Flashcards
(22 cards)
Why was Newland’s work rejected?
His table assumed all elements were discovered
Some grouped elements weren’t similar
When creating the octaves, he put some elements in the same position
Who was Mendeleev?
Mendeleev was a Russian Scientist who built off of Newland’s Law of Octaves and created the main foundation of the Periodic Table
Name 4 Features of Mendeleevs Periodic Table?
Left Gaps
Arranged elements in groups and periods
Separated Metals and Non - Metals
Elements arranged in Atomic Mass
Name 4 ways our Periodic Table is different to Mendeleevs one?
No Gaps
Noble Gases
Elements arranged in Atomic Number
Actinides and Lanthanides
Name Group 1 of Periodic Table?
Alkali Metals
Name Group 2 of Periodic Table?
Alkaline Earth Metals
Name the Elements between Group 2 and 3?
Transition Metals
Name of Group 7?
Halogens
Name of Group 8?
Noble Gases
Name 5 trends going down Group 1 and 2?
Bigger atoms More reactive More dense Softer to cut Lower melting and boiling points
Name 4 trends going down group 7?
Bigger atoms
Less reactive
Less soluble
Increasing melting and boiling point
Metal + Water —>?
Hydrogen + Metal Hydroxide
Metal + Oxygen —>?
Metal Oxide
Metal + Acid —>?
Salt + Hydrogen
Metal + Halogen —>?
Metal Halide
Give 4 observations of Potassium in water?
Floats on surface
Fizzing
Dissolves and disappears
Purple lilac flame
4 observations of Sodium in water?
Rolls in to ball
Fizzes across surface
Gas given off
Heat created
Give 5 physical properties of Chlorine?
Pale Green Gas Denser than air Toxic Slightly soluble in water Bleaches damp litmus paper
Give 3 uses of Chlorine?
Water Sterilisation
Manufacturing of PVC
Bleach
Source of Chlorine?
Electrolysis of Sodium Chloride
Give a use of Noble Gases?
Glowing Neon Signs
How did Newland’s arrange his periodic table? What were Octaves?
In Atomic Mass. Octaves were patterns were there were similarities between every 8th element
