Reference Tables - Regents to 2011
... nitrogen dioxide reacts with carbon monoxide to produce nitrogen and carbon dioxide. In addition, some carbon monoxide reacts with oxygen, producing carbon dioxide in the converter. These reactions are represented by the balanced equations below. Reaction 1: 2NO2(g) 4CO(g) →N2(g) 4CO2(g) 1198 ...
... nitrogen dioxide reacts with carbon monoxide to produce nitrogen and carbon dioxide. In addition, some carbon monoxide reacts with oxygen, producing carbon dioxide in the converter. These reactions are represented by the balanced equations below. Reaction 1: 2NO2(g) 4CO(g) →N2(g) 4CO2(g) 1198 ...
Chem152
... 1. What is the term for the smallest particle that represents an element? A) atom B) entity C) formula unit D) molecule E) none of the above 2. What is the term for the number that identifies a particular element? A) atomic number B) element number C) mass number D) substance number E) none of the a ...
... 1. What is the term for the smallest particle that represents an element? A) atom B) entity C) formula unit D) molecule E) none of the above 2. What is the term for the number that identifies a particular element? A) atomic number B) element number C) mass number D) substance number E) none of the a ...
Practice problem chap3 1. The atomic mass of 35Cl (75.53%) and
... 1. The atomic mass of Cl (75.53%) and 37Cl (24.47%) are 34.968amu and 36.956amu.Calculate the average atomic mass in amu. 2. What is the mass percent (%) for O in SO2? (a) 38.09 (b) 45.41 (c) 50.00 (d) 53.86 (e) 56.43 3. How many molecules of ethane (C2H6) are present in 0.334g of C2H6?How many H at ...
... 1. The atomic mass of Cl (75.53%) and 37Cl (24.47%) are 34.968amu and 36.956amu.Calculate the average atomic mass in amu. 2. What is the mass percent (%) for O in SO2? (a) 38.09 (b) 45.41 (c) 50.00 (d) 53.86 (e) 56.43 3. How many molecules of ethane (C2H6) are present in 0.334g of C2H6?How many H at ...
Reaction Rate Graphs C12-3
... same rate. Some reactions are very fast (eg. explosions), while others are very slow (eg. the rusting of iron). The Collision Theory states that: Chemical reactions involve collisions of reactant particles. Not all collisions lead to a chemical reaction. For molecules to react (effective colli ...
... same rate. Some reactions are very fast (eg. explosions), while others are very slow (eg. the rusting of iron). The Collision Theory states that: Chemical reactions involve collisions of reactant particles. Not all collisions lead to a chemical reaction. For molecules to react (effective colli ...
C. Adding acid shifts the equilibrium to the right
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
Redox Reactions and Electrochemistry
... Oxidizing Agent – a chemical substance that oxidizes (removes electrons from) other substances in a chemical reaction. In the process of oxidizing something, the oxidant becomes reduced; it’s oxidation state decreases. Reducing Agent – a chemical substance that reduces (loses electrons to) other sub ...
... Oxidizing Agent – a chemical substance that oxidizes (removes electrons from) other substances in a chemical reaction. In the process of oxidizing something, the oxidant becomes reduced; it’s oxidation state decreases. Reducing Agent – a chemical substance that reduces (loses electrons to) other sub ...
Properties and Changes in Matter
... move independently at high speed, and completely fill any container they occupy. ...
... move independently at high speed, and completely fill any container they occupy. ...
Inorganic Chemistry Lesson 3
... a discoverer of the law of definite Joseph Proust, performed a series of meticproportions. ulous experiments, and convincingly demonstrated that each chemical compound always contains exactly the same proportion of elements independently on the way it had been prepared. ...
... a discoverer of the law of definite Joseph Proust, performed a series of meticproportions. ulous experiments, and convincingly demonstrated that each chemical compound always contains exactly the same proportion of elements independently on the way it had been prepared. ...
Document
... Just be aware that when we write balanced equations on paper, we don’t put 1 coefficients (by writing a formula down, we are stating that there is one of those molecules present ). ...
... Just be aware that when we write balanced equations on paper, we don’t put 1 coefficients (by writing a formula down, we are stating that there is one of those molecules present ). ...
Week 7 - Acid-base, redox
... remember that oxidation results in an increase in oxidation number (or charge) across a reaction arrow, while reduction results in a decrease. Redox reactions are commercially important. Batteries, fuels, metals, and corrosion are redox reactions. Living systems are based on redox reactions. This se ...
... remember that oxidation results in an increase in oxidation number (or charge) across a reaction arrow, while reduction results in a decrease. Redox reactions are commercially important. Batteries, fuels, metals, and corrosion are redox reactions. Living systems are based on redox reactions. This se ...
Thermodynamics
... What is Thermodynamics? Thermodynamics is a branch of physics concerned with energy flow. Historically it had an emphasis on heat, temperature and their relation to energy and work. Study of energy changes accompanying chemical and physical changes to a system Defines systems using a few macr ...
... What is Thermodynamics? Thermodynamics is a branch of physics concerned with energy flow. Historically it had an emphasis on heat, temperature and their relation to energy and work. Study of energy changes accompanying chemical and physical changes to a system Defines systems using a few macr ...
Keq Assignment
... 1. Write balanced chemical equations for each of the following. Pay close attention to the physical states! NOTES: You must include the charge when writing ions, otherwise your answer is incorrect. Do not balance these equations using fractions for coefficients. a) sulfur dioxide gas combines with o ...
... 1. Write balanced chemical equations for each of the following. Pay close attention to the physical states! NOTES: You must include the charge when writing ions, otherwise your answer is incorrect. Do not balance these equations using fractions for coefficients. a) sulfur dioxide gas combines with o ...
Slide 1
... Reaction mechanisms allow us to understand reaction kinetics and make predictions about most ...
... Reaction mechanisms allow us to understand reaction kinetics and make predictions about most ...
Ch 1-4 Final Review - Iowa State University
... 13. Combination Reactions:____________________________________________________ 14. Decomposition Reactions:__________________________________________________ 15. Write the balanced chemical equation for the combustion of butane in air. ...
... 13. Combination Reactions:____________________________________________________ 14. Decomposition Reactions:__________________________________________________ 15. Write the balanced chemical equation for the combustion of butane in air. ...
Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur.The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms.Reactions may proceed in the forward or reverse direction until they go to completion or reach equilibrium. Reactions that proceed in the forward direction to approach equilibrium are often described as spontaneous, requiring no input of free energy to go forward. Non-spontaneous reactions require input of free energy to go forward (examples include charging a battery by applying an external electrical power source, or photosynthesis driven by absorption of electromagnetic radiation in the form of sunlight).Different chemical reactions are used in combinations during chemical synthesis in order to obtain a desired product. In biochemistry, a consecutive series of chemical reactions (where the product of one reaction is the reactant of the next reaction) form metabolic pathways. These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions, so that metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperatures and concentrations present within a cell.The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles as described by quantum field theory.