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Name__________________________ Chemistry Worksheet Fill in the blank Atom Electrons Matter Element Energy Isotope Ion Protons Molecule Neutrons 1. ____________ An electrical charged atom or group of atoms. 2. ____________ Anything that takes up space and has mass (weight) 3. ____________ A unique substance composed of atoms having the same atomic number. 4. ____________ Negatively charge particles, forming part of an atom. 5. ____________The ability to do work 6. ____________The smallest particle of an element that retains the properties of the element. 7. ____________The particle of a compound, formed when atoms combine chemically 8. ____________Positively charged particles forming part of an atom. 9. ____________Non-charged particle in the nucleus. 10. ____________Atoms with different masses but same atomic number Complete the table Particle Location Electrical Charge Proton Neutron orbit Insert the chemical symbol in the answer blanks for the following elements 1._____Oxygen 4. ____Iodine 7._____ Calcium 2._____Carbon 5. ____Hydrogen 8._____Sodium 3._____Potassium 6. ____Nitrogen 9_____Phosphorous Use a periodic chart to complete the following table by filling in the missing parts. Remember electrons fill the first orbit and than the second orbit, etc. As a result the outer orbits may be empty. Electron Distribution Chemical Symbol Atomic Number Atomic Mass Orbit Orbit Orbit Orbit 1 2 3 4 2 6 0 0 1 12 N 23 12 17 39 Use the electron distribution columns from the above table to complete the following table concerning IONIC BONDS Chemical Symbol Loss/gain of electrons Electrical Charge H Na Mg Cl Use the electron distribution columns from the above table to complete the following table concerning COVALENT BONDS Chemical Symbol Number of electrons shared Number of bonds made H C N O