Summer Resources - mvhs
... Covalent bonding : A covalent bond is formed by a shared pair of electrons between two atoms. Between two non metals- usually liquids and gases A group of atoms that are united by covalent bond is called a molecule and the substance made of molecules is called a molecular compound. Molecular for ...
... Covalent bonding : A covalent bond is formed by a shared pair of electrons between two atoms. Between two non metals- usually liquids and gases A group of atoms that are united by covalent bond is called a molecule and the substance made of molecules is called a molecular compound. Molecular for ...
Oxidation Number Rules
... c. Hydrogen usually has an oxidation number of +1 except in metallic hydrides where it then has an oxidation number of -1 Examples: HCl, hydrogen is +1; NaH, hydrogen is -1. d. The halogens, unless bonded to an element with a higher electronegativity, have an oxidation number of -1. Examples: NaCl, ...
... c. Hydrogen usually has an oxidation number of +1 except in metallic hydrides where it then has an oxidation number of -1 Examples: HCl, hydrogen is +1; NaH, hydrogen is -1. d. The halogens, unless bonded to an element with a higher electronegativity, have an oxidation number of -1. Examples: NaCl, ...
Science-M2-Basic-Che..
... they correctly understand and answering any questions that come up. Having them answer each other’s questions is a great confidence builder, as they see that they have the skills to help each other. Finally, have each group come up to the board and lead the class through the process. Using the perio ...
... they correctly understand and answering any questions that come up. Having them answer each other’s questions is a great confidence builder, as they see that they have the skills to help each other. Finally, have each group come up to the board and lead the class through the process. Using the perio ...
Bonding Web Practice Trupia - Trupia
... Bromine is the only liquid nonmetallic element at room temperature. It is a heavy, mobile, reddish-brown liquid, volatilizing readily at room temperature to a red vapor with a strong disagreeable odor, resembling chlorine, and having a very irritating effect on the eyes and throat; it is readily sol ...
... Bromine is the only liquid nonmetallic element at room temperature. It is a heavy, mobile, reddish-brown liquid, volatilizing readily at room temperature to a red vapor with a strong disagreeable odor, resembling chlorine, and having a very irritating effect on the eyes and throat; it is readily sol ...
File
... type of atoms in a molecule Simplest Formula gives the smallest whole-number ratios for the atoms present (NH2 – 1:2 ratio of nitrogen to hydrogen) Molecular Formula indicates the actual numbers of each type of atom per molecule (N2H4 – each molecule of hydrazine consists of two molecules of nit ...
... type of atoms in a molecule Simplest Formula gives the smallest whole-number ratios for the atoms present (NH2 – 1:2 ratio of nitrogen to hydrogen) Molecular Formula indicates the actual numbers of each type of atom per molecule (N2H4 – each molecule of hydrazine consists of two molecules of nit ...
Intermolecular Attractions
... Draw the electron dot formula. Then state how many bonding and unbonding pairs are present. A) NBr3 B) Water C) Chlorite ion (ClO2- ) D) CF2Cl2 ...
... Draw the electron dot formula. Then state how many bonding and unbonding pairs are present. A) NBr3 B) Water C) Chlorite ion (ClO2- ) D) CF2Cl2 ...
Basic Chemistry - Biology with Radjewski
... • Atoms with unfilled outer shells tend to undergo chemical reactions to fill their outer shells. • They can attain stability by sharing electrons with other atoms (covalent bond) or by losing or gaining electrons (ionic bond) • The atoms are then bonded together into molecules. • Octet rule—atoms ...
... • Atoms with unfilled outer shells tend to undergo chemical reactions to fill their outer shells. • They can attain stability by sharing electrons with other atoms (covalent bond) or by losing or gaining electrons (ionic bond) • The atoms are then bonded together into molecules. • Octet rule—atoms ...
L1 – CHEMISTRY FINAL REVIEW
... 36. Heating potassium chloride makes it dissolve more. On a solubility graph its curve would be __upsweeping It would make a solution colder when it dissolves because it has a net endothermic dissolving process. 37. What is the molality of a solution containing 1.70g of sodium nitrate in 162.6 g of ...
... 36. Heating potassium chloride makes it dissolve more. On a solubility graph its curve would be __upsweeping It would make a solution colder when it dissolves because it has a net endothermic dissolving process. 37. What is the molality of a solution containing 1.70g of sodium nitrate in 162.6 g of ...
THE CHEMICAL BASIS OF LIFE
... 11. Calcium (Ca) has an atomic number of 20; chlorine (Cl) has an atomic number of 17. a. The number of electrons in the outer shell of calcium is ______________. b. The number of electrons in the outer shell of chlorine is ______________. c. In a chemical reaction between these two atoms, _________ ...
... 11. Calcium (Ca) has an atomic number of 20; chlorine (Cl) has an atomic number of 17. a. The number of electrons in the outer shell of calcium is ______________. b. The number of electrons in the outer shell of chlorine is ______________. c. In a chemical reaction between these two atoms, _________ ...
Chem 1411 Chapt2
... Types of CompoundsIonic- Consists of metals and non-metals (Or in general cations and anions). NaCl, MgCl2, K2S, Na2SO4 Molecular (covalent)- Consists of non-metals only. HCl, N2O4, C3H6O, C6H12O6 Note- All compounds can be molecules; not all molecules can be compounds. Ions- Are chemical species th ...
... Types of CompoundsIonic- Consists of metals and non-metals (Or in general cations and anions). NaCl, MgCl2, K2S, Na2SO4 Molecular (covalent)- Consists of non-metals only. HCl, N2O4, C3H6O, C6H12O6 Note- All compounds can be molecules; not all molecules can be compounds. Ions- Are chemical species th ...
An element`s properties depend on the structure of its atoms
... Ants of the species Myrmelachista schumanni kill nonhost trees by injecting the leaves with formic acid, thus creating hospitable habitats (Devi's gardens) for the ant colony. ...
... Ants of the species Myrmelachista schumanni kill nonhost trees by injecting the leaves with formic acid, thus creating hospitable habitats (Devi's gardens) for the ant colony. ...
chapter
... • Every element has a fixed number of protons in the atomic nucleus (atomic number) which determines an atom’s identity and defines the element • The periodic table is a chart of the elements arranged in order by atomic number and chemical behavior • Bohr models represent the electron configurations ...
... • Every element has a fixed number of protons in the atomic nucleus (atomic number) which determines an atom’s identity and defines the element • The periodic table is a chart of the elements arranged in order by atomic number and chemical behavior • Bohr models represent the electron configurations ...
6.1 ATOMS, ELEMENTS, and COMPOUNDS
... -The first energy level, closest to the nucleus, can hold up to ______ electrons. -The second energy level can hold _______electrons. -The third energy level can hold ________electrons. B. Types of Chemical Bonds 1. ___________________—forms when atoms share one or more pairs of electrons • A _____ ...
... -The first energy level, closest to the nucleus, can hold up to ______ electrons. -The second energy level can hold _______electrons. -The third energy level can hold ________electrons. B. Types of Chemical Bonds 1. ___________________—forms when atoms share one or more pairs of electrons • A _____ ...
HOMEWORK 6-1 - losbanosusd.k12.ca.us
... 1. The bond length is the distance between two bonded atoms at their maximum potential energy. ____________ 2. The energy required to form a chemical bond between two neutral atoms is called bond energy. ____________ 3. According to the octet rule, chemical compounds tend to form so that each atom h ...
... 1. The bond length is the distance between two bonded atoms at their maximum potential energy. ____________ 2. The energy required to form a chemical bond between two neutral atoms is called bond energy. ____________ 3. According to the octet rule, chemical compounds tend to form so that each atom h ...
Molar Heat of Reaction
... Expressed in kilojoules per mole (kJ/mol) of dissolved solute In this reaction heat can be either released or absorbed ...
... Expressed in kilojoules per mole (kJ/mol) of dissolved solute In this reaction heat can be either released or absorbed ...
(p. 522)
... 14. Sucrose decomposes to fructose and glucose in acid solution. When ln [sucrose] is plotted vs. time, a straight line with slope of -0.208 hr¯1 results. What is the rate law for the reaction? (p. 701) B A.Rate = 0.208 hr¯1 [sucrose]2 B.Rate = 0.208 hr¯1 [sucrose] C.Rate = 0.0433 hr [sucrose]2 D.Ra ...
... 14. Sucrose decomposes to fructose and glucose in acid solution. When ln [sucrose] is plotted vs. time, a straight line with slope of -0.208 hr¯1 results. What is the rate law for the reaction? (p. 701) B A.Rate = 0.208 hr¯1 [sucrose]2 B.Rate = 0.208 hr¯1 [sucrose] C.Rate = 0.0433 hr [sucrose]2 D.Ra ...
Chemistry - Napa Valley College
... In 1896, Henri Becquerel placed a rock on unexposed photographic plates inside a drawer. The rock contained uranium. ...
... In 1896, Henri Becquerel placed a rock on unexposed photographic plates inside a drawer. The rock contained uranium. ...
Atomic Structure, Molecular Structure & Bonding
... 1. Circle the atom of interest. 2. Count the electrons inside the circle. If the circle “breaks” a bond, only count one electron of the bond. 3. Take the ve-’s for the atom (its group number) and subtract #2. FC of oxygen= 6 – (6) = 0 ...
... 1. Circle the atom of interest. 2. Count the electrons inside the circle. If the circle “breaks” a bond, only count one electron of the bond. 3. Take the ve-’s for the atom (its group number) and subtract #2. FC of oxygen= 6 – (6) = 0 ...
Chapter 2
... Electron configuration determines the chemical behavior of an atom. Electrons occupy specific energy levels, or shells, of the atom. Chemical behavior depends on the number of valence electrons, those in the outermost shell. An atom with an incomplete valence shell is reactive. Electrons move within ...
... Electron configuration determines the chemical behavior of an atom. Electrons occupy specific energy levels, or shells, of the atom. Chemical behavior depends on the number of valence electrons, those in the outermost shell. An atom with an incomplete valence shell is reactive. Electrons move within ...
AP Biology
... Electron configuration determines the chemical behavior of an atom. Electrons occupy specific energy levels, or shells, of the atom. Chemical behavior depends on the number of valence electrons, those in the outermost shell. An atom with an incomplete valence shell is reactive. Electrons move within ...
... Electron configuration determines the chemical behavior of an atom. Electrons occupy specific energy levels, or shells, of the atom. Chemical behavior depends on the number of valence electrons, those in the outermost shell. An atom with an incomplete valence shell is reactive. Electrons move within ...
Group 2 - UC Davis Canvas
... 11. The bond energy of the noble gas fluorine is too small to offset the energy required to break the F—F bond. 13. Iodide ion is slowly oxidized to iodine, which is yellow-brown in aqueous solution, by oxygen in the air: 4 I − ( aq ) + O 2 ( g ) + 4 H + ( aq ) → 2 I 2 ( aq ) + 2 H 2 O(l) . 15. D ...
... 11. The bond energy of the noble gas fluorine is too small to offset the energy required to break the F—F bond. 13. Iodide ion is slowly oxidized to iodine, which is yellow-brown in aqueous solution, by oxygen in the air: 4 I − ( aq ) + O 2 ( g ) + 4 H + ( aq ) → 2 I 2 ( aq ) + 2 H 2 O(l) . 15. D ...
Midterm Review Date
... 3. Which conclusion is based on the “gold foil experiment” and the resulting model of the atom? A) An atom is mainly empty space, and the nucleus has a positive charge. B) An atom is mainly empty space, and the nucleus has a negative charge. C) An atom has hardly any empty space, and the nucleus has ...
... 3. Which conclusion is based on the “gold foil experiment” and the resulting model of the atom? A) An atom is mainly empty space, and the nucleus has a positive charge. B) An atom is mainly empty space, and the nucleus has a negative charge. C) An atom has hardly any empty space, and the nucleus has ...
Hydrogen bond
A hydrogen bond is the electrostatic attraction between polar molecules that occurs when a hydrogen (H) atom bound to a highly electronegative atom such as nitrogen (N), oxygen (O) or fluorine (F) experiences attraction to some other nearby highly electronegative atom.These hydrogen-bond attractions can occur between molecules (intermolecular) or within different parts of a single molecule (intramolecular). The hydrogen bond (5 to 30 kJ/mole) is stronger than a van der Waals interaction, but weaker than covalent or ionic bonds. This type of bond can occur in inorganic molecules such as water and in organic molecules like DNA and proteins.Intermolecular hydrogen bonding is responsible for the high boiling point of water (100 °C) compared to the other group 16 hydrides that have no hydrogen bonds. Intramolecular hydrogen bonding is partly responsible for the secondary and tertiary structures of proteins and nucleic acids. It also plays an important role in the structure of polymers, both synthetic and natural.In 2011, an IUPAC Task Group recommended a modern evidence-based definition of hydrogen bonding, which was published in the IUPAC journal Pure and Applied Chemistry. This definition specifies that The hydrogen bond is an attractive interaction between a hydrogen atom from a molecule or a molecular fragment X–H in which X is more electronegative than H, and an atom or a group of atoms in the same or a different molecule, in which there is evidence of bond formation. An accompanying detailed technical report provides the rationale behind the new definition.