PROTON - Positively charged particle., NEUTRON - The subatomic particle with no electric charge., ELECTRON - The subatomic particle with a negative charge., NUCLEUS - The centre of the atom., EMPTYSPACE - Most of the atom is ________________., PERIODICTABLE - A chart organising elements in order of the number of protons., MASSNUMBER - A measurement equal to the number of protons and neutrons in the nucleus., ATOMICNUMBER - Is the same as the number of protons in an element., SUBTRACT - To calculate the number of neutrons in an element you _____ the number of protons from the mass number., POSITIVE - The nucleus has a __________ charge., SYMBOL - Element names are abbreviated and are represented on the periodic table by a __________ ., GROUPS - Vertical columns on the periodic table., PERIODS - Horizontal rows on the periodic table., HYDROGEN - The element with the lowest atomic number., OXYGEN - The element found in group 16, period 2 of the periodic table., EIGHTEEN - Neon is found in group number ___________ .,

Atomic structure and the periodic table: Match up

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