Name: Northwest Vista College Chem 1311
... 14. A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of nitrogen? A) 2.94 L B) 19.3 L C) 31.4 L D) 54.5 L E) 356 L 15. Which of the following processes is endothermic? Hints: a. If the reaction represents a phase chang ...
... 14. A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of nitrogen? A) 2.94 L B) 19.3 L C) 31.4 L D) 54.5 L E) 356 L 15. Which of the following processes is endothermic? Hints: a. If the reaction represents a phase chang ...
Mock Final Exam
... e. intermediate in both strength & length 69. Draw the Lewis structure of water. 70. What is a dipolar charge? 71. Three possible Lewis structures are shown here for the same compound, NCS-1: N–C=S N=C=S N=C-S a. Complete the structures by adding unbonded electrons. b. Calculate formal charges for e ...
... e. intermediate in both strength & length 69. Draw the Lewis structure of water. 70. What is a dipolar charge? 71. Three possible Lewis structures are shown here for the same compound, NCS-1: N–C=S N=C=S N=C-S a. Complete the structures by adding unbonded electrons. b. Calculate formal charges for e ...
Review - Final Exam
... 22. What are the valence electrons? What happens to the valence electrons across a row of representative elements and down a group? What information is gained from the valence electrons? Why do chemical families have similar properties? 23. Draw Lewis (Electron Dot) symbols for the elements across t ...
... 22. What are the valence electrons? What happens to the valence electrons across a row of representative elements and down a group? What information is gained from the valence electrons? Why do chemical families have similar properties? 23. Draw Lewis (Electron Dot) symbols for the elements across t ...
Atoms molecules Slide Guide Atoms ~ Atoms are the general term
... ~ Because electrons move so quickly, it is impossible to see where they are at a _________ __________ in time. After years of experimentation, scientists discovered ___________ areas where electrons are likely to be found. ~ The overall shape of the shells _______________ depending on how many elect ...
... ~ Because electrons move so quickly, it is impossible to see where they are at a _________ __________ in time. After years of experimentation, scientists discovered ___________ areas where electrons are likely to be found. ~ The overall shape of the shells _______________ depending on how many elect ...
word doc (perfect formatting)
... 4) Represents an atom of an alkali earth metal Questions 5-8 refer to the following descriptions of bonding in different types of solids. a) Lattice of positive and negative ions held together by electrostatic forces b) Closely packed lattice with delocalized electrons throughout giving ability to c ...
... 4) Represents an atom of an alkali earth metal Questions 5-8 refer to the following descriptions of bonding in different types of solids. a) Lattice of positive and negative ions held together by electrostatic forces b) Closely packed lattice with delocalized electrons throughout giving ability to c ...
Final Exam
... Ethyl alcohol (C2H5OH) is suggested as an alternative fuel to gasoline. (a) Complete and balance the following equation for combustion of ethyl alcohol, giving Lewis structures for the products: H H H C C O H ...
... Ethyl alcohol (C2H5OH) is suggested as an alternative fuel to gasoline. (a) Complete and balance the following equation for combustion of ethyl alcohol, giving Lewis structures for the products: H H H C C O H ...
Key Concepts
... 10. Cations are positive (+) ions and form when a neutral atom loses electrons. They are smaller than their parent atom. 11. Anions are negative ions and form when a neutral atom gains electrons. They are larger than their parent atom. 12. Ernest Rutherford’s gold foil experiment showed that an atom ...
... 10. Cations are positive (+) ions and form when a neutral atom loses electrons. They are smaller than their parent atom. 11. Anions are negative ions and form when a neutral atom gains electrons. They are larger than their parent atom. 12. Ernest Rutherford’s gold foil experiment showed that an atom ...
Chemistry Midterm Review 2006
... 8. Name the a. group 1A metals b. 2A metals c. 7A nonmetals d. 8A nonmetals. 9. State 3-4 properties of each of the families above. 10. Which family is the most stable? 11. Which family reacts vigorously with water? 12. Which family is extracted from mineral ores? 13. Which family are the most react ...
... 8. Name the a. group 1A metals b. 2A metals c. 7A nonmetals d. 8A nonmetals. 9. State 3-4 properties of each of the families above. 10. Which family is the most stable? 11. Which family reacts vigorously with water? 12. Which family is extracted from mineral ores? 13. Which family are the most react ...
VSEPR.
... The effect of lone pairs on bond angles: In VSEPR the lone pairs appear to occupy more space than electron pairs in bonds, with the result that bond angles are compressed away from the lone pairs. For example, in structures derived from tetrahedral parent geometry, such as water or ammonia, the H-O ...
... The effect of lone pairs on bond angles: In VSEPR the lone pairs appear to occupy more space than electron pairs in bonds, with the result that bond angles are compressed away from the lone pairs. For example, in structures derived from tetrahedral parent geometry, such as water or ammonia, the H-O ...
atomic number
... Electrons move from the cathode (negative electrode) to the anode (positive electrode). The tube contains a glass screen (set diagonally to the electron beam) that fluoresces, showing the path of the ...
... Electrons move from the cathode (negative electrode) to the anode (positive electrode). The tube contains a glass screen (set diagonally to the electron beam) that fluoresces, showing the path of the ...
L1 – CHEMISTRY FINAL REVIEW
... 32. Describe the Van Der Waals forces between water molecules called dipole interactions or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique proper ...
... 32. Describe the Van Der Waals forces between water molecules called dipole interactions or Hydrogen bonds. H-bond is a strong intermolecular bond between the slightly positive Hydrogen end of one water molecule and the slightly neg. oxygen end of an adjacent water molecule. 33. Name 4 unique proper ...
Document
... 1. Write ELEMENT SYMBOLS for each element in the compound. 2. Use each PREFIX to write the number of each atom as a SUBSCRIPT next to the symbol (omit the subscript 1). ...
... 1. Write ELEMENT SYMBOLS for each element in the compound. 2. Use each PREFIX to write the number of each atom as a SUBSCRIPT next to the symbol (omit the subscript 1). ...
www.tutor-homework.com (for tutoring, homework help, or help with
... A given mass of gas in a rigid container is heated from 100 to 500øC. Which of the following responses best describes what will happen to the pressure of the gas? a. The pressure will increase by a factor less than five. b. The pressure will decrease by a factor of five. c. The pressure will increas ...
... A given mass of gas in a rigid container is heated from 100 to 500øC. Which of the following responses best describes what will happen to the pressure of the gas? a. The pressure will increase by a factor less than five. b. The pressure will decrease by a factor of five. c. The pressure will increas ...
Elements Combine to Form Compounds
... these are links between two or more atoms that hold the atoms together Two types of Compounds (chemical bonds) Ionic Compounds Molecular (covalent) Compounds ...
... these are links between two or more atoms that hold the atoms together Two types of Compounds (chemical bonds) Ionic Compounds Molecular (covalent) Compounds ...
Seminario Tunable electronic properties of self
... with noble metal (111) surfaces. We show that the formation of an ordered mixed layer with a maximized donoracceptor contact area leads to a characteristic energy level alignment at the molecule/metal interface regardless of the particular molecules and substrate [1]. We also provide evidence that t ...
... with noble metal (111) surfaces. We show that the formation of an ordered mixed layer with a maximized donoracceptor contact area leads to a characteristic energy level alignment at the molecule/metal interface regardless of the particular molecules and substrate [1]. We also provide evidence that t ...
- Jersey College For Girls
... Q9. When lithium is burned in air, the two compounds lithium oxide (Li2O) and lithium nitride (Li3N) are formed. Both compounds are ionic and their ions can be represented by dot and cross diagrams. The dot and cross diagram for the ions in lithium oxide is ...
... Q9. When lithium is burned in air, the two compounds lithium oxide (Li2O) and lithium nitride (Li3N) are formed. Both compounds are ionic and their ions can be represented by dot and cross diagrams. The dot and cross diagram for the ions in lithium oxide is ...
Ch 2 Atoms and Molecules
... 2.6 Ions and Ionic Compounds • If an electron is added or removed from an atom, then the atom now has a charge, or has become an ion. • Cation = positively charged = loss of electron • Anion = negatively charged = gain of electron • Polyatomic ion – ions that consist of atoms joined as in a molecul ...
... 2.6 Ions and Ionic Compounds • If an electron is added or removed from an atom, then the atom now has a charge, or has become an ion. • Cation = positively charged = loss of electron • Anion = negatively charged = gain of electron • Polyatomic ion – ions that consist of atoms joined as in a molecul ...
Exam Review - hrsbstaff.ednet.ns.ca
... a) Atoms of the same element may differ in mass. b) All atoms of one element differ from the atoms of every other element. c) Chemical change is the union or separation of atoms. d) Atoms combine in small whole number ratios. ...
... a) Atoms of the same element may differ in mass. b) All atoms of one element differ from the atoms of every other element. c) Chemical change is the union or separation of atoms. d) Atoms combine in small whole number ratios. ...
AP - 02 - Atoms Molecules and Ions
... protons are located in a small, dense mass called the nucleus and the negative electrons located in the mostly empty space outside of the nucleus James Chadwick (1932) discovered the neutron (neutral particle) - The Modern View of Atomic Structure: o Every atom is made of protons and neutrons in t ...
... protons are located in a small, dense mass called the nucleus and the negative electrons located in the mostly empty space outside of the nucleus James Chadwick (1932) discovered the neutron (neutral particle) - The Modern View of Atomic Structure: o Every atom is made of protons and neutrons in t ...
Regents_Chem_Core_for_review
... increases. When an atom loses one or more electrons, it becomes a positive ion and its radius decreases. (5.2c) IV.7 When a bond is broken, energy is absorbed. When a bond is formed, energy is released. (5.2i) IV.8 Atoms attain a stable valence electron configuration by bonding with other atoms. Nob ...
... increases. When an atom loses one or more electrons, it becomes a positive ion and its radius decreases. (5.2c) IV.7 When a bond is broken, energy is absorbed. When a bond is formed, energy is released. (5.2i) IV.8 Atoms attain a stable valence electron configuration by bonding with other atoms. Nob ...
Chemistry: Fall Final Review 08
... Organic chemistry – study of substances containing carbon Inorganic chemistry - study of substances not containing carbon Analytical chemistry – study of the composition of substances Physical chemistry – study of the physical behavior of chemicals Biochemistry – study of the chemistry of living thi ...
... Organic chemistry – study of substances containing carbon Inorganic chemistry - study of substances not containing carbon Analytical chemistry – study of the composition of substances Physical chemistry – study of the physical behavior of chemicals Biochemistry – study of the chemistry of living thi ...
Atoms: The Nature of Things
... carry out in practice. He wondered how far something could be divided: forever or would there be a limit at which no further divisions were possible. The first alternative seemed absurd to him, so he concluded that matter is made of imperceptibly small “a-tomic” (meaning “not divisible”) particles t ...
... carry out in practice. He wondered how far something could be divided: forever or would there be a limit at which no further divisions were possible. The first alternative seemed absurd to him, so he concluded that matter is made of imperceptibly small “a-tomic” (meaning “not divisible”) particles t ...