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Maddison Bray, a junior at Bethel High School, reacts after crushing a liquid nitrogen frozen flower at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Rubber balls frozen with liquid nitrogen frozen at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Chrushed frozen flower at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Assistant Professor of Chemistry Justin Lytle demonstrates a chemical reaction to create a mirror coating at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

James Hoopes '12, and Asst. Prefessor of Chemistry Justin Lytle create a rainbow at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Professor Dean Waldo ignites a hydrogen and strontium filled balloon at Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, April 18, 2011.

PLUtonic members group photo at PLU on Tuesday, April 26, 2011.