1.   Drugs alter brain chemistry in fundamental and long-lasting ways.

2.   Gifford is worried that pollutants and water runoff from the new development could alter the chemistry of the spring.

3.   If a camera can alter the chemistry of a situation, it can also become a target in anarchic corners of the post-Cold War world.

4.   Its leaves produce toxins that alter soil chemistry, harming native vegetation.

5.   Team chemistry has been altered.

6.   The chemistry might be altered.

7.   When brain chemistry is altered by exposure to toxic metals, Masters argues, our natural violent urges may no longer be restrained.

8.   I would like to alter the chemistry.