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Changing States 2-5

evaporation, condensation, freezing, melting

QuestionAnswer
______________ energy increases the rate of evaporation. Adding
Evaporation occurs when molecules in a liquid gain enough energy that they overcome attrations from other molecules and break away to become a gas
How many vairables in any experiment one
Valid experiments must have a control, true or false. true
In condensation molecules of a gas ( slow down or speed up) and come together and form a liquid. slow down
When gas molecules transfer their energy to something cooler, they (slow down or speed up) their attractions, causing them to bond and become a liquid. slow down
Making water vapor (hotter or colder) increases the rate of condensation. colder
In _______________, a substance changes from a liquid to a solid. freezing
In __________________, a substance changes from a solid to a liquid. melting
Melting occurs when the molecules of a solid speed up to overcome the attractions so that the molecules can move past each other as a ___________________. liquid
Created by: susan.walters