Keyword Analysis & Research: what do the brackets mean in chemistry

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what do the brackets mean in chemistry	0.33	0.3	6134	57	38
what	0.82	0.8	6337	51	4
do	1.01	0.5	6799	25	2
the	1.36	0.6	6644	48	3
brackets	0.78	0.4	8419	25	8
mean	1.53	0.4	6226	6	4
in	0.1	0.7	26	57	2
chemistry	0.98	0.2	8764	39	9

Keyword	CPC	PCC	Volume	Score
what do the brackets mean in chemistry	1.35	0.3	8124	94