Group Two Metals Flashcards
Beryllium reacts with oxygen
Reluctant to burn, white flame
Beryllium reaction with water
No reaction
Beryllium Reaction with dilute HCl
Reacts rapidly
Beryllium reaction with dilute H2SO4
Reacts vigorously to
Magnesium with oxygen
Burns easily, bright white flame
Magnesium with water
Vigorous reaction with steam(g), no reaction with water (l)
Magnesium with dilute HCl
Reacts rapidly
Magnesium Reaction with dilute H2SO4
Reacts vigorously
Calcium with oxygen
Difficult to ignite, brick red flame
Calcium with water
Reacts moderately, hydroxide formed
Calcium with dilute HCl
Reacts vigorously
Calcium with dilute H2SO4
Reaction slowed down by the formation of a sparingly soluble sulfate layer
Covers the metal, stopping hydrogen bubbles from rising
Strontium with oxygen
Difficult to ignite, scarlet red
Strontium with water versus dilute HCl
Water: reacts rapidly, hydroxide formed
HCl: reacts vigorously
Sr with dilute H2SO4
Reaction is quickly stopped by the formation of an insoluble sulfate layer
Barium with oxygen
Difficult to ignite, lime flame
Ba with water versus dilute HCl
Water: Reacts vigorously, hydroxide formed
HCl: reacts vigorously
Ba with H2SO4
Reaction is quickly stopped by the formation of an insoluable sulfate layer
Magnesium oxide reaction with water
Observe slightly soluble, weakly alkaline solution is formed
Calcium oxide reaction observations with water
Vigorously react, releases a lot of energy, causes some water to boil off a the CaO will seek to expand and crack open
SrO and BaO observations with water
Increasing pH over time
All group two oxides are …. Except for …. Which acts as a ….
Basic, BeO, Amphoteric solution
All group two oxides with water are … which means pH goes …
Alkaline, up
Group two hydroxide form ….. solutions of metal …. When they react with dilute …
Colorless, chlorides, acid
Hydroxides react with sulfates, and they ….. in solubility going …. And barium sulfate is …..
Decrease, down, insoluable
Group two metals will react with dilute acids to form …………… with a byproduct of
Colorless solutions of metal salts, hydrogen gas
Group two reacts with sulfuric acid rather than hydrochloride, an ………………… forms
Insoluable sulfate
Going down the group, the group 2 sulfates become ——- soluble. Calcium sulfate is —— soluble and strontium and barium sulfate are —— soluble
Less, sparingly, insoluable
Oxides + sulfates
…. Form when oxides react with an ….
…….. sulfates form at the …… which means that the solid oxide beneath cannot ….. with the ….. unless they the oxide is ….. and ……
Group two oxides, acid
Insoluable, surface, react, acid
Powdered, stirred
Group two carbonates are all insoluble in …. except for …..
also will form …… , ……, and ….. when reacted with ……..
water, BeCO3
Soluble chloride salts, water, carbon dioxide gas, hydrochloric acid
Ca, Sr, and Ha form as …….. layer on their solid ……… which stops any further reaction after initial …….. (……….) of carbon dioxide
Insoluable sulfate, carbonates, bubbling (effervescence)
Thermal decomp of Nitrates and Carbonates
Carbonates break down when they are heated to form ….. and give off …..
Nitrates break down to produce ……. And ….. and …….
Metal oxide, carbon dioxide gas
Metal Oxide, nitrate, oxygen
Going DOWN the group
More ….. is needed to break down the …. And ……
The thermal stability of the …. And … therefore …..
The higher the ….. and the … the ion, the ….. the …. Power
The more ….. they are The more likely they are to ……… as bonds become ….:
Heat, carbonate and nitrates
Carbonate and nitrate, increases
Charge, smaller, higher, polarizing
Polarized, thermally decompose, weaker
Group two hydroxides
Going down the group they become more …. Which means higher ….
Solubility ….. down the group
Alkaline, Ph, increases
Group two sulfates decreased in ….. down the group
Solubility
