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... A) the carbon valence electrons, only B) the hydrogen valence electrons, only C) the carbon and hydrogen valence electrons D) all of the carbon and hydrogen electrons 79. Based on electronegativity values, which type of elements tends to have the greatest attraction for electrons in a bond? A) metal ...
... A) the carbon valence electrons, only B) the hydrogen valence electrons, only C) the carbon and hydrogen valence electrons D) all of the carbon and hydrogen electrons 79. Based on electronegativity values, which type of elements tends to have the greatest attraction for electrons in a bond? A) metal ...
Name______________________ Period________
... 2. The following weighings were made during a laboratory exercise: Mass of evaporating dish.... 59.260 g Mass of sugar sample.......... 1.61 g What is the total mass of the evaporating dish plus the sample, expressed to the proper number of significant figures? A) 60.9 g B) 60.870 g C) 60.87 g D) 61 ...
... 2. The following weighings were made during a laboratory exercise: Mass of evaporating dish.... 59.260 g Mass of sugar sample.......... 1.61 g What is the total mass of the evaporating dish plus the sample, expressed to the proper number of significant figures? A) 60.9 g B) 60.870 g C) 60.87 g D) 61 ...
File - Flipped Out Science with Mrs. Thomas!
... Two liquids were combined and in the second picture solid particles are seen. The is a precipitate that has formed from the mixing of two liquids ...
... Two liquids were combined and in the second picture solid particles are seen. The is a precipitate that has formed from the mixing of two liquids ...
C5H12 + 8 O2 → 5 CO2 + 6 H2O
... e.g.: O2, halogens, H2O2, HNO3, Cr2O7–, MnO4– • Reducing agents: Elements or compounds that reduce the other reactant. e.g.: H2, C, metals ...
... e.g.: O2, halogens, H2O2, HNO3, Cr2O7–, MnO4– • Reducing agents: Elements or compounds that reduce the other reactant. e.g.: H2, C, metals ...
Atomic Structure Notes
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. 2. All atoms of a given element are identical, having the same size, mass and chemical properties. 3. The atoms of one element are different from the atoms of all other elements. 4. Atoms of one elemen ...
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. 2. All atoms of a given element are identical, having the same size, mass and chemical properties. 3. The atoms of one element are different from the atoms of all other elements. 4. Atoms of one elemen ...
© NCERT not to be republished
... 69. Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds. 70. (a) ...
... 69. Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds. 70. (a) ...
The Periodic Table OL Page 1 of 2 G. Galvin Name: Periodic Table
... Defn: The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom of that element. No. of neutrons in an atom = Mass Number (A) – Atomic Number (Z) Defn: Isotopes are atoms of the same element (i.e. they have the same atomic number) which have different m ...
... Defn: The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom of that element. No. of neutrons in an atom = Mass Number (A) – Atomic Number (Z) Defn: Isotopes are atoms of the same element (i.e. they have the same atomic number) which have different m ...
document
... Solid: A substance that has a definite shape and volume. Liquid: A substance that has a definite volume but that changes shape to fill the container. Gas: A substance that has neither a definite volume nor a definite shape. Many substances, such as water, can exist in all three states depending on t ...
... Solid: A substance that has a definite shape and volume. Liquid: A substance that has a definite volume but that changes shape to fill the container. Gas: A substance that has neither a definite volume nor a definite shape. Many substances, such as water, can exist in all three states depending on t ...
homework assignment - Global Change Program
... The process that causes the forward reaction (left to right), which produces oxygen, is photosynthesis and the processes that cause the reverse reaction, which consumes oxygen, are respiration as well as burning. Because all chemical reactions can be written in terms of the "number of atoms" that p ...
... The process that causes the forward reaction (left to right), which produces oxygen, is photosynthesis and the processes that cause the reverse reaction, which consumes oxygen, are respiration as well as burning. Because all chemical reactions can be written in terms of the "number of atoms" that p ...
bonding, structure, properties and energy changes
... Names and formulae of ionic compounds Ionic compounds are made up of positive ions (cations) and negative ions (anions). • A cation is usually a metal atom that has lost an electron or electrons. • An anion is formed when a non-metal atom gains an electron or electrons (monatomic) or when two or m ...
... Names and formulae of ionic compounds Ionic compounds are made up of positive ions (cations) and negative ions (anions). • A cation is usually a metal atom that has lost an electron or electrons. • An anion is formed when a non-metal atom gains an electron or electrons (monatomic) or when two or m ...
Quiz Samples
... Gas occupies all the volume available T F Calculate the final pressure formed after the containers 1 and 2 were connected: Total volume= 1L+2L=3L; total amount of gas Container 1, 1L under 2 atm of gas Container 2, 2L under 1 atm of gas at normal pressure= 4L*atm (2 L in Container 1 and 2 L in Conta ...
... Gas occupies all the volume available T F Calculate the final pressure formed after the containers 1 and 2 were connected: Total volume= 1L+2L=3L; total amount of gas Container 1, 1L under 2 atm of gas Container 2, 2L under 1 atm of gas at normal pressure= 4L*atm (2 L in Container 1 and 2 L in Conta ...
Chemical Reactions
... Redox reactions: oxidation and ions • Many redox reactions involve metals and their oxides. • Whenever metals react with oxygen they form ionic compounds and the metal loses electrons to form positively charged ions. • Eg. When magnesium burns to form magnesium oxide magnesium atoms (no charge) bec ...
... Redox reactions: oxidation and ions • Many redox reactions involve metals and their oxides. • Whenever metals react with oxygen they form ionic compounds and the metal loses electrons to form positively charged ions. • Eg. When magnesium burns to form magnesium oxide magnesium atoms (no charge) bec ...
document
... 7.3- Chemical Equations Short-hand way of describing a reaction. Provides information about the reaction. Formulas of reactants and products. States of reactants and products. Relative numbers of reactant and product molecules that are required. Can be used to determine masses of reacta ...
... 7.3- Chemical Equations Short-hand way of describing a reaction. Provides information about the reaction. Formulas of reactants and products. States of reactants and products. Relative numbers of reactant and product molecules that are required. Can be used to determine masses of reacta ...
Final Exam Study Guide Word document
... 61. Carbon-14 radioactively decays via the emission of a beta particle. What is the product nuclide of this decay? 62. When polonium-216 decays by the emission of one alpha particle and two beta particles, the product is the isotope __________. 63. Ionizing radiation is many times more dangerous to ...
... 61. Carbon-14 radioactively decays via the emission of a beta particle. What is the product nuclide of this decay? 62. When polonium-216 decays by the emission of one alpha particle and two beta particles, the product is the isotope __________. 63. Ionizing radiation is many times more dangerous to ...
Tutorial 1
... 1. Use the second member of each group from Group 1A to Group 7A to show that the number of valance electrons on an atom of the element is the same as its group number. 2. Use Lewis dot symbol to show the formation of aluminum oxide (Al2O3) 3. Explain what an ionic bond is? And name five metals and ...
... 1. Use the second member of each group from Group 1A to Group 7A to show that the number of valance electrons on an atom of the element is the same as its group number. 2. Use Lewis dot symbol to show the formation of aluminum oxide (Al2O3) 3. Explain what an ionic bond is? And name five metals and ...
Student Worksheet The Chemistry of Water Quality Tests
... Subject/Course: Advanced Placement Chemistry ...
... Subject/Course: Advanced Placement Chemistry ...
APS Science Curriculum Unit Planner
... Our perception of the modern model of the atom has developed over time and allows us to make predictions about how chemicals ...
... Our perception of the modern model of the atom has developed over time and allows us to make predictions about how chemicals ...
RES8_chemcontentchecklist
... Explain in terms of van der Waals’ forces the variations in the boiling points of alkanes with different carbon-chain length and branching. Describe the combustion of alkanes, leading to their use as fuels in industry, in the home and in transport. Explain using equations the incomplete combustion o ...
... Explain in terms of van der Waals’ forces the variations in the boiling points of alkanes with different carbon-chain length and branching. Describe the combustion of alkanes, leading to their use as fuels in industry, in the home and in transport. Explain using equations the incomplete combustion o ...
FORMULA WRITNG
... c) 2 Ag + S Ag2S 12) Complete the following concept map using the following terms: decreases, half-reactions, gain electrons, reduction, lose electrons, redox reaction, oxidation, increases. ...
... c) 2 Ag + S Ag2S 12) Complete the following concept map using the following terms: decreases, half-reactions, gain electrons, reduction, lose electrons, redox reaction, oxidation, increases. ...
CHEM1001 2012-J-2 June 2012 22/01(a) • Complete the following
... NH3(g) + O2(g) → NO(g) + H2O(l) 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(l) Calculate the mass of NH3 required to produce 140. g of water. The molar mass of H2O is: molar mass = [2 × 1.008 (H) + 16.00 (O)] g mol-1 = 18.016 g mol-1 Hence, the number of moles of water produced is: number of moles = mass / mol ...
... NH3(g) + O2(g) → NO(g) + H2O(l) 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(l) Calculate the mass of NH3 required to produce 140. g of water. The molar mass of H2O is: molar mass = [2 × 1.008 (H) + 16.00 (O)] g mol-1 = 18.016 g mol-1 Hence, the number of moles of water produced is: number of moles = mass / mol ...
Chemistry Lesson Plans #07 - Chemical Reactions
... o To be more precise, we use chemical equations to describe a chemical reaction. As with a word equation, we use an arrow to indicate a reaction, with the reactants on the left, separated by a + sign, and products on the right, also separated by a + sign. Take rust: Fe + O 2 → Fe 2 O3 Such an equati ...
... o To be more precise, we use chemical equations to describe a chemical reaction. As with a word equation, we use an arrow to indicate a reaction, with the reactants on the left, separated by a + sign, and products on the right, also separated by a + sign. Take rust: Fe + O 2 → Fe 2 O3 Such an equati ...
Chemical Reactions Chapter 11
... atoms of each element and mass is conserved. • To write a balanced chemical equation, first write the skeleton equation. Then use coefficients to balance the equation so that it obeys the law of conservation of mass. – In every balanced chemical equation each side of the equation has the same number ...
... atoms of each element and mass is conserved. • To write a balanced chemical equation, first write the skeleton equation. Then use coefficients to balance the equation so that it obeys the law of conservation of mass. – In every balanced chemical equation each side of the equation has the same number ...
2010 - SAASTA
... only 2 moles of gaseous product. Lower pressure favours the reaction that loads to an increase in the number of gas molecules, i.e. the reverse reaction. Therefore the equilibrium concentration of nitrogen will increase and the yield of ammonia will decrease. In the Haber Process, nitrogen (N2) and ...
... only 2 moles of gaseous product. Lower pressure favours the reaction that loads to an increase in the number of gas molecules, i.e. the reverse reaction. Therefore the equilibrium concentration of nitrogen will increase and the yield of ammonia will decrease. In the Haber Process, nitrogen (N2) and ...
Redox
![](https://commons.wikimedia.org/wiki/Special:FilePath/NaF.gif?width=300)
Redox reactions include all chemical reactions in which atoms have their oxidation state changed; in general, redox reactions involve the transfer of electrons between species. The term ""redox"" comes from two concepts involved with electron transfer: reduction and oxidation. It can be explained in simple terms: Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, these are only specific examples of a more general concept of reactions involving electron transfer.Redox reactions, or oxidation-reduction reactions, have a number of similarities to acid–base reactions. Like acid–base reactions, redox reactions are a matched set, that is, there cannot be an oxidation reaction without a reduction reaction happening simultaneously. The oxidation alone and the reduction alone are each called a half-reaction, because two half-reactions always occur together to form a whole reaction. When writing half-reactions, the gained or lost electrons are typically included explicitly in order that the half-reaction be balanced with respect to electric charge.Though sufficient for many purposes, these descriptions are not precisely correct. Oxidation and reduction properly refer to a change in oxidation state — the actual transfer of electrons may never occur. The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state. In practice, the transfer of electrons will always cause a change in oxidation state, but there are many reactions that are classed as ""redox"" even though no electron transfer occurs (such as those involving covalent bonds).There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO2) or the reduction of carbon by hydrogen to yield methane (CH4), and more complex processes such as the oxidation of glucose (C6H12O6) in the human body through a series of complex electron transfer processes.