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unit 2 vocab

unit 2

termDefinition
solid phase of matter that has a definite shape and volume
liquid phase of matter that takes the shape of its container and has a definite volume
gas phase of matter that has no definite shape or volume
plasma phase of matter that can occur when a gas becomes electricity charged
atom the basic building blocks of all matter
element a pure substance cannot be broken down by chemical or physical means
compound a substance made of two or more elements chemically combined represented by a chemical formula
mixture two or more substances that are together in the same place but their atoms are not chemically bonded
pure substance matter that consists of only one type of atom, molecule, or compound
physical property a characteristic of a substance that can be observed without changing into another substance
solubility a measure on how well a substance can dissolve into another substance
luster shine or lack of shine dullness
malleable property that allows metals to be made into sheets
texture the feel of a surface or substance
conductivity the ability of a substance to pass an electric current through it
physical change does not create a new substance and is usually reversible
melting the change in state from a sold to a liquid
freezing the change in state of a liquid to a solid
vaporization the change in state from a liquid to a gas
condensation the change in state from a gas to a liquid
sublimation the change in state from a solid to a gas
chemical property a characteristic of a substance that describes its ability to change into another substance
combustibility can be easily ignited and burned
ph acidity or basicity of a substance
reactivity the ease and speed with which a substance combines and reacts with other substances
chemical change one or more new substances are formed; usually cannot be reversed
endothermic requires an input of energy( feels cold)
exothermic releases energy (feels cold)
Created by: user-2025615
 

 



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