Question

Which of these changes are endothermic and which are exothermic

baking a cake
bending a plastic ruler
cutting paper
melting ice cream
ripening of fruit
souring of milk
​

Answer 1

Exothermic is all of them besides baking a cake that’s endothermic

Answer 2

exothermic - bending a plastic ruler , cutting paper, melting ice cream, ripening of fruit, souring of milk.

Step-by-step explanation:

endothermic- baking of cake .