Energy, states of matter, reactions, physical and chemical changes

Physical vs chemical properties Physical properties Used to observe and describe matter Examples: Color Shape Density Freezing/boiling/melting point Chemical properties Describes matter’s potential to undergo chemical change due to its composition Examples: Flammability Reactivity with other chemicals Oxidation states

Chemical change Change that results in the formation of new chemical substances The process is irreversible

Factors indicating chemical change Change in color, smell, taste Presence of light, gas, bubbles and a precipitate

Examples chemical change Burning something The rusting of a metal

Physical change Type of change where molecules are rearranged but the internal structure is not affected The process is reversible

Factors indicate physical change Change in state, shape, size

Examples physical change Boiling water Crumbling a piece of paper

assignment Go to tecscience.weebly.com Open the word document Write the answers in your notebook