Atoms and Elements Crossword Puzzle

QUESTIONS LIST:

• proton : a sub atomic particle with a positive charge.
• potassium : an element with the symbol k.
• twelve : the number of electrons that will be an atom which has 12 protons.
• shells : the electrons orbit the nucleus on these.
• charged : an ion is a _ particle, produced by the loss of gain of electrons.
• neutrons : these are found in the nucleus of an atom.
• eight : the maximum number of electrons that can fill the second shell.
• compounds : made up from two or more types of atom joined together by bonds.
• water : a compound that has 2 hydrogen atoms and 1 oxygen atom.
• lithium : name of an element found in group 1 of the periodic table.
• electron : this sub atomic particle has a negative charge.
• isotope : a form of an element that has a different number of neutrons.
• hydrogen : the name of the element that only has 1 proton and 1 electron.