gr7

gr7

Tuesday, 16 October 2012

oct 16 science lab 2 individually or with 1 partner

1.2 More About Matter pg.14-16

Purpose: To determine what happens when matter changes state from a solid-liquid-gas.

Hypothesis: If I place a small piece of ice in a plastic sandwich bag, squeeze out most of the air, place it in a microwave oven for 60-90 seconds approximately then I think...(this will happen)

Observations
1.  Through the door of the microwave, I noticed...
2.  After seeing the bag inflate, I removed it from the microwave and noticed...

Analysis:  According to the particle theory, particles in matter move faster and spread farther apart when they are heated.  When matter is cooled, its particles move back closer together.  Knowing this, I learned the ice particles in this experiment...(did what?)  My hypothesis was...(correct, somewhat correct, or incorrect because)

due friday oct 19th