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the smallest particle into which an element can be divided and still have the properties of that element; basic building block of matter


a substance made up of one kind of atom


matter made of two or more elements, has different properties from the elements it is made of


a quality or power belonging specially to something


the smallest particle of a substance that still has the properties of that substance


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


amount of matter in something; measured in grams


amount of space an object or substance takes up


using senses to gather information


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


Chemistry: center of an atom, made up of protons and neutrons


in an atom, particle with a neutral charge; located in the nucleus


positively charged particle located in the nucleus of an atom


negatively charged particle found outside the nucleus of an atom

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