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Matter 1
Properties and Structure of Matter
Term | Definition |
---|---|
matter | anything that has mass and takes up space |
mass | a measure of the amount of matter in an object |
volume | a measure of how much space an object takes up |
weight | the force of gravity between Earth and an object |
density | a measure of how tightly packed the matter in an object is |
conduct | to allow energy to flow through materials easily |
insulate | to prevent heat from passing through |
element | a pure substance that cannot be broken down into any simpler substances |
compound | any substance that is formed by the chemical combination of two or more elements and acts like a single substance |
atom | the smallest unit of an element that retains the properties of that element |
proton | a particle in the nucleus of an atom that carries one unit of positive electric charge |
neutron | a particle in the nucleus of an atom that has no net electric charge |
electron | a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge |
nucleus | an atom's dense center, where most of its mass is |
molecule | a particle that contains more than one atom joined together |