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Chemistry

QuestionAnswer
Neutral Substances have a pH of 7
Bases have pH greater than greater than 7
Acids have a pH less than 7
What is BTB Indicator of Acids or Bases
Acids turn yellow
Bases turn blue
iodine is ? and turns what color? starch. blackish - blue
vinegar...? and is the indicator of what? bubbles and carbon
What can be used to separate a mixture? Filters
Mixtures are? When one or more substances are mixed together and can be easily seperated
Solutions are? When one or more substances are mixed together and dissolve into another
An example of solution is? sugar and salt
Matter is? solid, liquid, gas
Solids tightly packed, very dense, vibrate and definite shape
liquids move more freely, less dense, takes shape of container its in
gas move most freely, least dense, has no definite shape
solid - liquid melting
liquid - solid freezing
gas - liquid condensation
liquid - gas evaporation
Physical change? when an object changes its apperance
Chemical change? reaction occurs and irrevesible
Created by: user-1931773
 

 



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