168x Filetype PPTX File size 1.26 MB Source: www.midlandisd.net
Matter • Anything that has mass and takes up space. –Mass= a measure of the amount of “stuff” the object contains (this is not to be confused with weight) Properties There are properties that are used to describe matter. • Physical Property – can be observed without changing the identity of the substance • color • texture • density • viscosity • change in state • solubility • malleability • mass • volume • ductility • luster • boiling point, freezing/melting point Properties • Chemical Property - describes the ability of a substance to undergo changes in identity - a new substance is produced * reactivity * toxicity * pH * conductivity * fermenting * oxidation – such as rusting or tarnishing * flammability *combustibility Properties • Examples: –viscosity physical –reactivity chemical –density physical –solubility physical –tarnishing chemical Matter’s Changes • Physical Change – properties remain the same – changes the form of a substance without changing its identity – All changes in state! (freeze, melt, condense, evaporate, and sublimate) – Examples: • Boil, dissolve, break, split, crack, grind, cut, crush, and bend.
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