Differentiate between evaporation and boiling. [3 MARKS]

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Solution

Differences: 0.5 mark per differentiation.

$\begin{matrix} E v a p o r a t i o n & B o i l i n g 1. E v a p o r a t i o n i s a p r o c e s s t h a t t a k e s p l a c e c o n t i n o u s l y a t a l l t e m p e r a t u r e s & B o i l i n g t a k e s p l a c e a t a d e f i n i t e t e m p e r a t u r e . A t t h i s b o i l i n g p o i n t, t h e v a p o r p r e s s u r e o f t h e l i q u i d b e c o m e s e q u a l t o t h e a t m o s p h e r i c p r e s s u r e . 2. E v a p o r a t i o n t a k e s p l a c e o n l y a t t h e s u r f a c e o f t h e l i q u i d . & A n d b o i l i n g t a k e s p l a c e f r o m e v e n b e l o w t h e s u r f a c e o f t h e l i q u i d i n t h e f o r m o f b u b b l e s . 3. I t a l w a y s c a u s e s c o o l i n g & N o c o o l i n g \end{matrix}$

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