Unit 6 Worksheet 4 Molecular Compounds Answer Key – Mass Formula (amu) sodium chloride NaCl 58. Carbon disulfide CS 2 76. Molecular nitrogen N 2 28. Phosphoric acid H 3 PO 4 98. Nickel (II) nitrate Ni (NO 3) 2 134. Hydrogen sulfide H 2 S (g )) 34.
A) How are ionic compounds named? Identify ionic compounds as type I (metals with irreversible charges – alkali and alkaline earth metals, Al, Zn and Ag) or type II (metals with charges that can be different in different compounds – usually found in the transition metals). Type I – cation + anion-ide; Type II – Cation (Cation Charge) + Ion Consideration
Unit 6 Worksheet 4 Molecular Compounds Answer Key
B) How are molecular compounds named? Remember the prefix. Binary molecular compound nomenclature: prefix-first element + prefix-second element-idea. (Mona is ignored in the first element).
Chapter 6 Practice Test: Chemical Bonding
C) What is the name of polyatomic ions? The names of the polyatomic ions should be remembered – Table 5 in the textbook (apart from ions containing Cr and Mn and ions containing Per and Hypo). If you have two polyatomic anions, you name the cation first and then the anion, eg: ammonium nitrate (NH 4 NO 3).
C) Br- – HBr – hydrobromic acid d) SO 3 2- – H 2 SO 3 – sulfuric acid e) NH 4 + – by making hydrogen the total charge will be +2; Adding hydrogen ions will not neutralize f) CO 3 2- – H 2 CO 3 – carbonic acid
Binary acids are composed of hydrogen and non-metals. Nomenclature: Hydro + Non-Metal – Basic name of ic acids Oxoacids are acids that contain oxyanions. Nomenclature: • With oxanes ending in -ite: base name oxyanion + -ite acid
Ionic compounds consist of one or more cations paired with one or more cations (in most cases, the cation
Class 9 Chemistry Worksheet On Chapter 3 Atoms And Molecules Set 3
Metals and ions are non-metals). The basic unit of an ionic compound is the formula unit. Molecular Compounds Chapter 6 Estimates. Name: Class: Date: ID: A. MULTIPLE CHOICES Identify the alternative that best completes the statement or answers the question.
DOWNLOAD “Assessment Chapter 6. Name: Class: Date: ID: A. MULTIPLE CHOICE Identify the alternative that completes the statement or answers the question.”
1 Name: Class: Date: ID: Chapter 6 Multiple Choice Assessment Identify the option that best completes the statement or answers the question. 1. When an atom loses an electron, it forms a(n) a. Loan C. polyatomic ions. b. Cation.. d. Neutral ions. 2. The charge on the chloride ion is a. 1+. C. 1-. b. 3+. d Which pair has the same electron configuration? any. CI- and AR C. CI and AR B. CI- and AR- d. Cl+ and Ar 4. A(n) are always chemical bonds formed when atoms share electrons. Polar bonds. C. metal band. b. Ionic bond. D. covalent bond. 5. When two fluorine atoms share a pair of electrons, the bond formed is a(n). Polar covalent bonds. C. non-polar covalent bonds. b. Ionic bond. D. double bond. 6. The chemical formula of magnesium bromide is a. MGBR. C. MG (II) Br. b. MGBr D. MG Br. 7. A compound with the formula is a. Silicon Chloride. C. Silicon chloride (I). b. Chlorinated silicon. D. Silicon tetrachloride. 8. The attraction between water molecules is stronger than a. sodium and chloride ions. C. Atoms in polyatomic ions. b. carbon dioxide molecules. D. Atoms in diatomic molecules. 9. Which type of solid is likely to be the best conductor of electricity? any. ionic compounds c. metallic elements b covalent compounds d. Non-metallic elements 10. There are a. At least one metallic element. C. Metallic elements only. b. At least one element is not a metal. D. Non-metallic elements only. Short Answer 11. What is the stable electron configuration? 1
2 Name: ID: A 12. What does each dot in the electron diagram represent? 13. What process converts atoms into ions? 14. What keeps ions in their fixed positions in the crystal lattice? 15. What subscripts are used in chemical formulas? 16. Explain why molten ionic compounds are good conductors of electricity, but solid ionic compounds are poor conductors of electricity. 17. What is the difference between single, double and triple covalent bonds? 18. Explain why molecules of non-polar elements always contain covalent bonds. 19. Explain that the hydrogen atom in the covalent bond between oxygen and hydrogen has a partial positive charge and that the oxygen atom has a partial negative charge. 20. What is the name of the binary compound formed from potassium and iodine? 21. Write the formulas for the compounds called copper (i) chloride and copper (ii) chloride. 22. Name the compounds represented by the space-filling model labeled A, B and C. In general, what determines the strength of metallic bonds? 24. What properties do copper and tin change when these metals are mixed together to make bronze? 25. What are the advantages of magnesium in magnesium alloys? What happened? Problem 26. What is the similarity between the neon atom and the sodium ion in the fluoride ion? 27. How are polyatomic molecules and ions similar? 28. Classify the bond in each of these compounds as ionic, polar or non-polar covalent: 2
Minute Check 09/05/17 What Is An Atom? What Is An Element?
3 Name: ID: A 29. Write the name of the compound with the following chemical formula: 30. Which of the three elements is a metal and which is not a metal? 31. Element Q forms a compound with element X and element Z. Write the formula for these two compounds. 32. What is the formula for a compound containing a chromium (iii) ion and an anion of element Z? 33. Draw the electron dot structure of the compounds fluorine and Z. 34. If atom X reacts with atom X, what type of bond is formed? 3
4 ID: A Chapter 6 Assessment Section Multiple Choice Answers 1. Answer: B 2. Answer: C 3. Answer: A 4. Answer: D 5. Answer: C 6. Answer: B 7. Answer: D 8. Answer: B 9. ANS: C 10. ANS: Short answer 11. ANS: In a stable electron configuration, the highest occupied energy level is filled with electrons. 12. SAL: Each dot represents a valence electron. 13. ANS: Electron transfer. 14. SAL: The attraction between neighboring cations and anions keeps the anions in a stable position in the lattice. 15. ANS: A subscript used to indicate the number of atoms of an element in a molecule or the ratio of ions in a crystal lattice. 16. ANSWER: When an ionic compound dissolves, the ions can move from their fixed positions in the crystal lattice. 1
5 ID: A 17. SAL: Two atoms share two electrons in a single bond, four in a double bond, and six in a triple bond. 18. SAL: Molecules of non-polar elements always have covalent bonds because atoms have the same attraction for electrons. 19. SAL: Electrons are more attracted to oxygen atoms than hydrogen atoms. 20. ANS : Potassium iodide 21. ANS : CuCu and CuCI2 22. ANS : A is sulfur trioxide, B is carbon monoxide, and C is nitrogen dioxide. 23. ANS: In general, the more electrons valence a metal has, the stronger the metal bonds. 24. ANSWER: A combination of copper and tin is harder and stronger than any metal in its pure form. 25. ANSWER: An advantage that remains intact is that magnesium is a light metal. The disadvantage is that magnesium is a soft metal. Problem 26. Answer: All three have the same electron configuration. 2
6 ID: A27 ANS: Both polyvalent molecules and ions have covalent bonds. 28. ANS: Sulfur trioxide: Polar covalent bond; calcium oxide; ionic bond; Iodine: A non-polar covalent bond. 29. ANS: Sulfur dichloride, silver (i) sulfate, lithium fluoride, carbon disulfide, calcium hydroxide. 30. ANSWER: Q is a metal. X and Z are non-metals. 31. ANS: QX and Q2Z 32. ANS: Cr2Z3 33. ANS: F Z F 34. ANS: Non-polar covalent bond 3
Naming Covalent Compounds
Bonding and Bonding Interactions of Ions and Metals 71 For Students Using Ions Basic Edition, Solve Problems 1, 3 5, 7 12, 14, 15, 18 20 Important Understanding Ions Form When Atoms Gain or Lose
Ionic and Covalent Bonds Ionic Bonds Electron Transfer When a metal is joined to a non-metal, electrons move from the metal to the non-metal. One becomes a cation and one becomes an anion. between kittens
In the box below, draw the Lewis electron dot structure of a compound made of magnesium and oxygen. [Include any fees or partial fees.
Name: 1) Which molecule is non-polar and has a symmetrical shape? A) NH 3 B) H 2 O C) HCl D) CH 4 7222-1 – page 1 2) When ammonium chloride crystals are dissolved in water, the temperature of the water decreases.
Question Video: Converting A Complex Chemical Name With Prefixes Into A Chemical Formula
7.4 Using models of Bohr’s Theory Learning Tips, such as Figures 1 to 4 on pages 218 and 219, will help you visualize scientific explanations. Look back and forth between the figures as you go through Figures 1 to 4.
Write nomenclature and formulas for ionic compounds using IUPAC
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