Chemistry Chapter 4
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What is matter?
Anything that has mass and occupies space
what is a pure substance?
- matter that contains only one type of particle
- made into elements and compounds
what is a mixture?
matter that contains more than one type of particle
what is an element?
a pure substance that cannot be broken down into simpler parts by chemical methods
what is a compound?
a pure substance that is made up of two or more different elements that are chemically combined
what is a physical property?
a characteristic of a substance that can be observed and measured without changing the identity of the substance
what is viscosity?
the measure of a substances resistance to flow
what is melting point?
the temperature at which a solid turns into a liquid
what is boiling point?
the temperature at which a liquid turns into a gas
what is solubility?
a meausre of the ability of a substance to dissolve into another substance
what is density?
the ratio of the mass of an object to the space it occupies
what is chemical property?
the ability of a substance to change (react)and form new substances
what is combustibility?
the abilitiy of a substance to burn in air
what is stability?
the ability of a substance to remain unchanged
what is toxidity?
the ability of a substance to cause harmful effects in plants and animals
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