Changes

Worksheet #2: Physical/Chemical Name_____ Properties/Changes CHEMISTRY: A Study ... Microsoft Word - 2-04a-Physical Chemical Wkst 2-Key.doc...

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Worksheet #2: Physical/Chemical Properties/Changes I.

KEY Name___________________

Fill in the Blanks

Physical ____________ properties can be observed without chemically changing matter. Chemical ____________ properties describe how a substance interacts with other Solids substances. ____________ have definite shapes and definite volumes. Liquids Gases ____________ have indefinite shapes and definite volumes. ____________ have indefinite shapes and indefinite volumes. physical Freezing Phase changes are ____________ changes. ____________ point is the temperature at which a liquid turns to a solid. It is also equal to the solid melting ____________ point which is the temperature at which a ____________ turns Boiling liquid to a ____________. ____________ point is the temperature at which a liquid condensation turns to a gas, and ____________ point is the temperature at which a gas turns to a liquid. Occasionally, a solid turns directly into a gas without turning into a sublimation liquid first. This is called ____________.

II.

Label these properties as chemical (C) or physical (P). Be certain to know the definition of each of these properties.

combustibility malleability weight failure to react ductility texture

III.

C _____ P _____ P _____ C _____ P _____ P _____

density tendency to corrode volume melting point odor flammability

P _____ C _____ P _____ P _____ P _____ C _____

Label these changes as chemical (C) or physical (P).

digestion of food getting a haircut evaporation ice cube melting crushing rocks

C _____ P _____ P _____ P _____ P _____

explosions lighting a candle tarnishing silver formation of acid rain dissolving salt in water

CHEMISTRY: A Study of Matter © 2004, GPB

2.4a

C _____ C _____ C _____ C _____ P _____