booklet 4-reactivity of metals Flashcards
(35 cards)
what does the ph scale go from and to
0 to 14
what does a lower ph show
the solution is more acidic
what does a higher ph show
the more alkaline the solution is
what ph level is said to be neutral
ph 7
what sort of solutions do acids form
acids form an aqueous solution
what ph do acids have
less than 7
acids form what
acids form H+ ions in water
what is a base
a base is an alkali
what ph does a base have
above 7
what sort of base is an alkali
a base that dissolves in water
what do alkalis form
OH- ions in water
what is the reaction between acids and bases called
neutralisation
word equation for neutralisation
acid + base -> salt + water
équation for neutralisation in terms if H+ and OH- ions
H+ (aq) + OH- (aq) -> H2O (l)
the reactivity series of …
the reactivity series of metals
what other two elements does the reactivity series of metals often include
carbon and hydrogen
which metals will react with water - 4
potassium
sodium
lithium
calcium
which metals will react with acids -10
potassium sodium lithium calcium magnesium aluminium zinc iron tin lead
which metals will react with oxygen (13)
potassium sodium lithium calcium magnesium aluminium zinc iron tin lead copper mercury silver
what is the most reactive
potassium
what is the least reactive
gold
what does the reactivity of a metal depend upon
how easily it looses an electron
to form what
a positive ion
what is this positive ion also called
a cation
