1.   Be careful because this chemical will make your skin burn.

2.   Can I get the chemicals myself to make the colors in the fire?

3.   So the chemicals may make people more prone to allergic reactions.

4.   The biological mechanisms by which the chemicals may make people more susceptible to diseases still need to be worked out.

5.   The chemicals also make the eyes tear.

6.   While blackening a metal surface often erases fingerprints, new chemicals make them recoverable in some cases.

7.   The newly discovered chemical could make it easier to capture lampreys for sterilization, Li said.

8.   The hotel premises were evacuated and the chemicals made safe by firefighters wearing protective suits.