Any ability to produce a change in the composition of matter

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Presentation transcript:

Any ability to produce a change in the composition of matter Chemical Properties Any ability to produce a change in the composition of matter

Flammability A material’s ability to burn in the presence of oxygen (O2)

Reactivity How a substance combines with other substances

Chemical Change A substance reacts and forms one or more new substances Examples: cake baking, apple rotting, food being digested

Signs of a chemical change Change in color Production of a gas Formation of a precipitate Production of heat or cold

Signs of a chemical change Fizzing and foaming Sound or light given off Change in odor

Physical Change Some of the properties change but the substances stay the same Some physical changes can be reversed, some cannot Examples: butter melting, slicing a tomato, getting your hair cut, melting ice

Chemical change vs. Physical change Chemical change: the type of matter that makes up the object and the way that the matter is arranged in the object changes Physical change: the composition remains the same