Question

 

Which is true about the process of ice melting?

Choose one: 

A. q is positive: the process is endothermic 

B. q is negative: the process is exothermic

C. q is positive: the process is exothermic 

D. q is negative: the process is endothermic

 

Which is true about the process of gas burning?

Choose one: 

A. qis positive; the process is exothermic 

B. q is negative: the process is exothermic

C. qis positive; the process is endothermic 

D. q is negative, the process is endothermic

Answer 1

ice melt it required energy
so,
q is positive
and when heat is consumed in a reaction then the reaction is called endothermic reaction

Answer : option A

when gas burn heat is released out
so, q will be negative
and when heat is released in a reaction then the reaction is called exothermic reaction

Answer : option B