Unit 8: CHEMICAL NAMES and FORMULAS

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Unit 8: CHEMICAL NAMES AND FORMULAS Name _________________________________________________________________ Date __________________________ Mod ____________ Exam __________________________ Across 28. These have various oxidation numbers 1. These have a 1+ oxidation number 29. The name for the compound of calcium and oxygen 3. Every compound always contains the same elements in the same proportions. Down 6. The type of compound containing only two elements 2. The number that tells how many atoms of an element are in a 7. Compounds form so that atoms can satisfy what rule? unit of the compound 8. ammonium chloride 4. A compound containing more than 2 different elements 10. The formula for chromium (III) and oxygen 5. A covalent bond wherein the electrons are shared equally 18. Name P4O10 among elements 19. silver oxide 6. The name for a compound of barium and hydroxide 20. A covalent bond wherein the electrons are not shared equally 9. These have a 1- oxidation number 21. The formula for beryllium and iodine 11. Nickel (I) carbonate 22. NH4OH 12. Name As2O5 23. A chemical combination of two or more elements having 13. The group which does not have oxidation numbers. different properties than the individual elements 14. Nona is the prefix for ___ in a covalent bond 24. Name Na2S 15. The prefix for 7 in a covalent bond 25. A single atom with a charge 16. The formula for calcium and oxygen 26. The prefix for 4 in a covalent bond 17. The ion ClO3- 27. The positive/negative number assigned to an element that shows its ability to combine in a compound Also for the exam: Be able to draw electron dot diagrams for various ionic bonds (brackets) and covalent bonds (dots). Be able to write a chemical formula (ionic and covalent) for a given set of elements/polyatomic ions. Be able to write the compound name for a given formula (ionic and covalent). Know the properties of ionic, polar covalent, and nonpolar covalent compounds. Complete the following on loose-leaf: Draw e- dot diagrams for Na2O, Iron (II) & Sulfur, N2, Diatomic iodine, Calcium & Chlorine, dihydrogen monoxide, HF, and magnesium phosphide Write the formula and the names for: sodium and phosphate ion; zinc and sulfate ion; iron(III) and carbonate ion; aluminum and oxygen, barium and nitrate ion, cesium and bromine, lithium and nitrogen. Name the following covalent compounds: P4S10, SiBr4, S2Cl2, XeF6, CO, ClO2, and C3N4 Write the formula for the following covalent compounds: disulfur decafluoride, dinitrogen tetroxide, chlorine trifluoride, nitrogen tribromide, diphosphorus trioxide, and iodine hetpafluoride .

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Naming Molecular Compounds General Instructions: Please Do the Activities for Each Day As Indicated
Teacher Name: Dwight Lillie Student Name: ________________________ Class: ELL Chemistry Period: Per 4 Assignment: Assignment week 2 Due: Friday, 5/8 Naming Molecular Compounds General Instructions: Please do the activities for each day as indicated. Any additional paper needed please attach. Submitted Work: 1) Completed packet. Questions: Please send email to your instructor and/or attend published virtual office hours. Schedule: Date Activity Monday (4/27) Read Sections 9.3, 9.5 in your textbook. Tuesday (4/28) Read and work through questions 1-9 Wednesday (4/29) Read and work through questions 10-14 Thursday (4/30) Read and work through questions 14-18 Friday (5/31) Read and work through questions 19-21 How are the chemical formula and name of a molecular compound related? Why? When you began chemistry class this year, you probably already knew that the chemical formula for carbon dioxide was CO2. Today you will find out why CO2 is named that way. Naming chemical compounds correctly is of paramount importance. The slight difference between the names carbon monoxide (CO, a poisonous, deadly gas) and carbon dioxide (CO2, a greenhouse gas that we exhale when we breathe out) can be the difference between life and death! In this activity you will learn the naming system for molecular compounds. Model 1 – Molecular Compounds Molecular Number of Atoms Number of Atoms in Name of Compound Formula of First Element Second Element ClF Chlorine monofluoride ClF5 1 5 Chlorine pentafluoride CO Carbon monoxide CO2 Carbon dioxide Cl2O Dichlorine monoxide PCl5 Phosphorus pentachloride N2O5 Dinitrogen pentoxide 1. Fill in the table to indicate the number of atoms of each type in the molecular formula.
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1. in an Ionic Compound of Formula Mmxn, the Metal (M) Occupies a Face-Centered Cubic Lattice and the Anions Occupy Four Positions Inside the Unit Cell
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