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The basic building blocks of matter


Anything that has mass and takes up space


An explanation or representation of something that cannot be seen


A collection of atoms that all have the same number of protons


Chemicals that result from atoms linking together

Physical change

A change that effects the appearance but not the chemical makeup of a substance

Chemical change

A change that alters the makeup of the elements or molecules of a substance


One of three forms- solid, liquid, or gas- which every substance is capable of attaining.


a mixture in which one substance is dissolved in another


the substance in which the solute dissolves

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