Physical Science Ionic Bonding Review NEUTRAL Element Metal or Nonmetal? Number of Protons? STABLE Number of Electrons? Number of Valence Electrons? Lose or gain Electrons? How many electrons lost or gained? Number of Protons? Number of Electrons? Oxidation Number? 1)Cesium 3)Gallium 4)Germanium 5)Oxygen 6)Fluorine 7)Arsenic 8)Xenon Write the formulas for the following combinations of elements. ___________________ 9) Cesium oxide _________ _______ _____ 10) Cesium fluoride 11) Cesium arsenide 13) Strontium fluoride _______________ 14) Strontium phosphide 15) Gallium fluoride 16) Gallium arsenide _______________ 17) Gallium oxide 18) Germanium oxide 19) Silver (I) oxide 20) Zinc (II) selenide 21) Tin(IV) iodide 22) Cobalt (III)chloride 23) Cobalt (III) oxide 12) Strontium oxide _______________ _______________ ___________________ Name __________________________________________________________ Period ________ 2)Strontium Science 9 Practice Test Name ______________________________________ Part A- Fill-in the following chart. Element Number of valence Electrons? 1. Arsenic As 2. Bromine 3. Cesium 4. Gallium 5. Selenium 6. Strontium 7 Sulfur Metal or Lose or Nonmetal? gain Electrons? How many electrons are lost or gained? Oxidation number Br Cs Ga Se Sr S Part B-Write the formulas for the following compounds. 8) Cesium sulfide ___________________________ 9) Tin(II) bromide ___________________________ 10) Gallium selenide ___________________________ 11) Strontium bromide ___________________________ 12) Gallium arsenide ___________________________ Part C- Calculate the formula mass for the following compounds. Show your work in the correct format. 13) Al2(SiF6)3 15) 2Al2(SiF6)3 14) (NH4)2S2O3 = ____________ 16. You build an atom that has the following components: 5 protonsP N 7 neutrons E 5 electrons Draw a picture of how you would build your atom below: Circle which element this atom is on this periodic table below: The mass of this atom is: a. 5 mass units b. 7 mass units c. 10 mass units d. 11 mass units e. 12 mass units Explain what ideas you used to choose an answer: ____________________________________________________ ____________________________________________________ The charge of this atom is: a. b. c. d. e. 0, this is a neutral atom -3 -1 +1 +3 17. You start with your atom: 5 protons 7 neutrons 5 electrons You want to change your atom’s properties. Mark YES if a change will work, and mark NO if it will not work. A. If you want to change the type of element your atom is, you can either: (circle) Add a proton Yes or No or Add a neutron Yes or No or Add an electron Yes or No B. If you want to change the charge of your atom, you can either: (circle) Add a proton Yes or No or Add a neutron Yes or No or Add an electron Yes or No C. If you want to change the mass of your atom by 1 or more mass units, you can either: (circle) Add a proton Yes or No or Add a neutron Yes or No or Add an electron Yes or No D. If you add 2 proton and 1 neutron to your atom … Will the element change? ____ If so, circle the new element? Will the mass change? _____ If so, what is the new mass of the atom? ________ Will the charge change? ____ If so, what is the new charge of the atom?________
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