summary physical changes

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A change that alters the form or appearance of a material butdoes not convert the material

into new substances.

PHYSICAL CHANGE

Changes in state are physical changes

Image source: http://itl.chem.ufl.edu/2041_u99/lectures/lec_f.html

Every substance contains energy from the movement of its particles, called thermal energy. The higher the temperature of a substance, the greater its thermal energy.

The measure of the average energy of motion of the particles in a substance is

TEMPERATURE

Image Source: http://www.adelaidehydronicheating.com.au/solarhotwater.html

Matter changes whenever energy is added or taken away.

Energy is added: Solid Liquid Gas

Energy is removed: Gas Liquid Solid

Image source: http://cse.ssl.berkeley.edu/artemis/mission_sunearth_closeup1.html

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