Chemical Reactions Flashcards
what is a chemical change?
atoms rearranging to make new products
what is a physical change?
a change of state or a temporary change
what is and exothermic reaction?
energy is given out which means it gets hotter
What is an endothermic reaction?
energy is taken in which means it gets colder
balance C4-H10+02=CO2+H20
2C4-H10+13O2+8CO2+10H20
what is thermal decomposition
when a compound is broken by heat only
what is oxidation?
a chemical reaction in which substances reacts with oxygen and gives out light and heat
what is combustion?
when an element combines with oxygen to form more than one oxide product
what is displacement?
when a metal takes the place of a less reactive metal
name the reactivity series
potassium,sodium,calcium,magnesium,aluminium,carbon,zinc,iron,tin,lead,hydrogen,copper,silver,gold,platinum
what is neutralisation
when and acid and a base(non-soluble alkali) and an acid react to change the ph of a mixture
what type of reaction is zinc and copper nitrate-copper and zinc nitrate
displacement
