1) Which of the following subatomic particle has a positive charge? a) proton b) neutron c) electron d) atom e) nucleus 2) Which of the following subatomic particle has no charge? a) Proton b) neutron c) electron 3) Choose ALL of the subatomic particles that are found in the nucleus. a) protons b) electrons c) neutrons d) electron cloud 4) Which letter represents the atomic number in the picture below. a) A b) B c) C d) D 5) How many electrons does this atom have?  a) 1 b) 4 c) 2 d) 6 6) How many electrons does this atom have? a) 2 b) 6 c) 8 d) 5 7) What is the symbol for Iron? a) O b) I c) Fe d) H 8) What is the symbol for Argon? a) Ar b) Al c) A d) On 9) Identify the elements in the chemical formula.  a) Hydrogen b) Helium c) Silicon d) Oxygen 10) Where are electrons located and what is their charge? a) Electron cloud   b) Nucleus c) Negative   d) Positive 11) What is the most common element found in the compound that makes up ocean water? a) silicon b) oxygen c) nitrogen d) carbon 12) What combination of letters could be used as a chemical symbol for an element? a) DL b) Ke

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