Documents Physical Property A characteristic of a substance that can be observed without changing the...

Slide 1 Physical Property A characteristic of a substance that can be observed without changing the substance into something else See page 22 Slide 2 Physical Change A change…

Documents Astronomy 1 – Winter 2011 Lecture 10; January 28 2011.

Slide 1 Astronomy 1 – Winter 2011 Lecture 10; January 28 2011 Slide 2 Previously on Astro-1 What are photons? –light can have particle-light properties. The particles…

Documents Density refers to how much stuff (mass) there is in a given volume. Density= mass/volume.

Slide 1 Slide 2 Density refers to how much stuff (mass) there is in a given volume. Density= mass/volume Slide 3 Density tells us how tightly matter is packed together If…