Atoms, Elements, and Compounds

16 terms by johalloran 

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atom

the smallest component of an element having the chemical properties of the element

element

a substance that cannot be separated into simpler substances by a chemical change

compound

the result of more than one element combining in a chemical reaction

property

a quality or power belonging specially to something

molecule

the smallest particle into which an element or compound can be divided; two or more atoms combined

matter

the material that all objects and substances are made of; anything thas has mass and takes up space

mass

amount of matter in something; measured in grams

volume

amount of space anobject or substance takes up

osbservation

using senses to gather information

inference

drawing a conclusion using prior knowledge to make sense of our observations

liquid molecules

no definite shape, definite volume, not tightly packed, move about freely, slide over each other

gas molecules

no definite shape or volume, far apart, bounce off each other, move rapidly and randomly

solid molecules

definite shape and volume, attracted to each other, held tightly together, movement is limited, vibrate only

water molecule

an example of a compound

hydrogen and oxygen

examples of elements

... atoms

all molecules of a particular compound contain the same combination of ...

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