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Atoms and Matter Review

I Love Science___________________________
Across
Material consisting of two or more substances
Established the first periodic table.
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element
Area of contact between two phases
Subatomic particle with no charge.
Any material made up of only one kind of atom.
A row in periodic table.
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes
any of the gaseous elements helium, neon, argon, krypton, xenon, and radon
A combination of two or more substances that are not uniformly dispersed
a table of the chemical elements arranged in order of atomic number
Part of a solution that gets dissolved
A compound that contains the element carbon, with very few exceptions
any of the elements fluorine, chlorine, bromine, iodine, and astatine
Homogeneous mixture composed of a solvent and a solute
Anything that has inertia
Mass per unit volume
Down
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element
Elements that have properties of both metals and non-metals.
Having tiny holes or openings that allow air or water to pass through
Physically distinct section of matter with uniform properties set off from the surrounding matter by physical boundaries
Center of atom.
Outer most electron(s) in an atom.
A substance that is not a hydrocarbon or a derivative of a hydrocarbon
any of the elements lithium, sodium, potassium, rubidium, cesium, and francium,
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Electrons reside here.
Subatomic particle that has a positive charge.
Material can be drawn into a thin wire
the basic unit of a chemical element.