1) A negatively charged subatomic particle. a) Electron b) Proton c) Neutron 2) A positively charged subatomic particle. a) Electron b) Proton c) Neutron 3) A neutral subatomic particle. a) Electron b) Proton c) Neutron 4) The nucleus has... a) protons and neutrons b) protons and electrons c) Neutrons and electrons 5) All matter is made up of tiny particles called atoms. a) True b) False 6) The smallest unit of matter a) Proton b) Neutron c) Atom 7) The center of the atom is called the a) protons b) electrons c) nucleus 8) The electron cloud contains.... a) protons b) neutrons c) electrons 9) One or two letters for an elements is called a) chemical name b) chemical symbol c) atomic weight 10) A pure substance cannot be broken down. a) True b) False

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