chemical reactions Flashcards
1
Q
what is an exothermic reaction, how is it shown and where
A
reaction that transfers energy to its surroundings - temp rise - hand warmers
2
Q
what is an endothermic reaction, how is it shown and where does it occur
A
reaction that takes in energy from surroundings - lower temp - sports injury packs
3
Q
what is oxidation
A
where a substance gains energy
4
Q
what is thermal decomposition
A
where a substance splits into two other ones when heated
5
Q
what is combustian
A
burning-when a fuel reacts with oxygen and releases energy
6
Q
what does combustion need and what is the equation
A
fuel oxygen heat
hydrocarbons + oxygen arrow carbon dioxide + water
