reactivity Flashcards
what is the formula and charge of an ammonium ion?
NH₄⁺
what is the formula and charge of a nitrate ion?
NO₃⁻
what is the formula and charge of a hydroxide ion?
OH⁻
what is the formula and charge of a sulfate ion?
SO₄²⁻
what is the formula and charge of a carbonate ion?
CO₃²⁻
metal + acid →
salt + hydrogen
metal oxide + acid →
salt + water
metal hydroxide + acid →
salt + water
metal carbonate + acide →
salt + water+ carbon dioxide
neutralisation =
the reaction between a base and acid to produce a salt and water
what is the formula of
hydrochloric acid
sulfuric acid
nitrate acid
HCl
H₂SO₄
HNO₃
molten =
in a liquid state
what is the reactivity scale order? which way does it increase in reactivity?
potassium
sodium
calcium
magnesium
zinc
iron
copper
Silver
gold
bottom to top increase
what is a thermite reaction used for
welding on big scales eg railway tracks
what is the symbol equation for iorn + copper sulphate → copper + iorn sulphate
Fe + CuSo₄ → Cu + FeSo₄
displacement reaction
a reaction in which a more reactive metal ‘pushes out’ a less reactive one from a compound
what metals can carbon displace?
zinc
iron
tin
lead
what is the reaction in a blast furnace?
iron oxide + carbon > iron + carbon dioxed
what happens when you combine carbonates with acid? what is the equation?
it makes other salts
acid + carbonate > salt + water + carbon dioxide
exothermic reaction
gives out energy and the temp increases
endothermic reaction
takes in energy and temp decreases
what is nuetralisation
to change an acid or alkaline solution to one that has a ph of 7
what is the equation for neutralization?
acid + alkali > salt + water
what is a base?
a metal oxide
