Atoms and Mattter

Question Answer
a mixture in which two or more substances are evenly mixed but not bonded together homogeneous mixture
anything that has mass and takes up space matter
substance made of only one kind of atom element
a small particle that is the building block of matter atom
substance made of two or more elements hat are chemically joined in a specific combination compound
a mixture in which the substances are not evenly mixed heterogeneous mixture
two or more atoms that are held together by chemical bonds and act as a unit molecule
matter with a composition that is always the same substance
positively charged particle in the nucleus of an atom proton
region surrounding an atoms nucleus where one or more electrons are often found electron cloud
negatively charged particle that occupies the space in an atom outside the nucleus electron
one or more atoms of an element having the same number of protons but a different number of neutrons atomic number
region at the center of atom that contains most of the mass of an atom nucleus
an atom that has a charge because it has gained or lost electrons isotope
the number of protons in the nucleus of an atom of an element neutron

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