exothermic and endothermic reactions Flashcards
1
Q
what is an exothermic reaction
A
an exothermic reaction is a chemical reaction that releases energy by light or heat
2
Q
what is an endothermic reaction?
A
an endothermic reaction is any chemical reaction that absorbs heat from its environment
3
Q
examples of exothermic reactions :
A
- respiration
- mixing acids and bases
- burning
4
Q
endothermic examples:
A
- photosynthesis
- thermal decomposition
- melting ice
5
Q
how do you prevent heat loss in an experiment
A
-put a lid on
-insulated beaker
6
Q
what are the variables in the investigation of how the volume if alkali added affect the temp change of an exothermic reaction
A
IV- change the volume of alkali
DV- measure the change in temp
CV- volume of acid, a lid, conc of acid
