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Science study stack

Hurry up and study

QuestionAnswer
Physical change When the appearance of an object changes - Breaking your pencil in half in class
Chemical change When a reaction occurs that is irreversible and a new substance is formed - A bike rusting that is left in the rain
Describe a solid Tightly packed together, molecules vibrate in place. Has a definite shape and volume
Describe a liquid Molecules spread out and move more freely. Has a definite volume and takes the shape of the container its in
Describe a gas Molecules move the most freely and move the fastest. Has no definite shape or volume and takes the shape of the container its in
Solid to liquid = Melting - adding heat
Liquid to Gas = Evaporation / vaporization - adding heat
Gas to liquid = Condensation = removing heat
Liquid to solid = Freezing / solidification - removing heat
What are the three main types of matter Solid, Liquid, and Gas
What is a mixture When one or more substances are mixed together and can be easily separated
What is a solution When one or more substances are mixed together, and one dissolves in the other
Acids have a pH __________ than 7 less
Bases have a pH __________ than 7 greater
Neutral substances have a pH ____________ 7 of
Is light, heat, and sound matter NO
Created by: albeelin222
 

 



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