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Chemistry - grade 9/10

Crossword hints:
the smallest unit of all substances that cannot by divided, Liquid non-metal at room temperature, Change in temperature, colour or pH, formation of a new product, disappearance of original substance, the sharing of electrons between non-metal atoms, orbits the nucleus, negatively charged, charged particle resulting from the transfer of one or more electrons, the electrostatic attraction of metal and non-metal ions, the %27father%27 of the periodic table, Only liquid metal at room temperature, Malleable, ductile, lusterous, high melting and boiling points, usually solid at room temperature, conductor of heat and electricity. , the %27connection%27 of metal - metal atoms, a neutral sub-atomic particle, Brittle, dull, does not conduct heat or electricity., Colourless, odourless gas that is found in the atmosphere, elements arranged in a structured order, change in state or dissolving, a positive sub-atomic particle,

Crossword words:
CHEMICALREACTION, PHYSICALCHANGE, NONMETAL, ELECTRON, METALLICBOND, ION, MERCURY, MANDLEEV, METAL, PROTON, NEUTRON, OXYGEN, IONICBOND, BROMINE, ATOM, PERIODICTABLE,