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Bouncing frozen rubber ball 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.

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.

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.

Rubber balls frozen with liquid nitrogen frozen 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.

Noah Bedford, prospective student on a campus visit from Rhode Island at the 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.

Maddison Bray, a junior at Bethel High School, eats a piece of iron" cake from the periodic table cake during Deserts and Demos sponsored by the Chemistry Club at PLU on Monday, 44304, 2011. "