Chapter 2: Chemical Reactions Section 1
... Surface area – the greater the surface area that faster the reaction (ex. Chewing) Temperature – raising the temperature causes particles to move faster and therefore have more energy; they also come into contact more often; lowering temperature slows things down Concentration – amount of substance ...
... Surface area – the greater the surface area that faster the reaction (ex. Chewing) Temperature – raising the temperature causes particles to move faster and therefore have more energy; they also come into contact more often; lowering temperature slows things down Concentration – amount of substance ...
Midterm Review Answers
... Write a balanced chemical equation for the mentioned neutralization process. How many moles of H2SO4 are contained in the 45.7mL sample? What volume of 18M solution of H2SO4 is required to prepare the 45.7mLsample that is required for neutralization? What was the concentration of the NaOH solution? ...
... Write a balanced chemical equation for the mentioned neutralization process. How many moles of H2SO4 are contained in the 45.7mL sample? What volume of 18M solution of H2SO4 is required to prepare the 45.7mLsample that is required for neutralization? What was the concentration of the NaOH solution? ...
examples of chemical and physical reactions.
... a) Complete these sentences. i. For BURNING to take place, there must be a FUEL, OXYGEN and _________. ii. For RUSTING to take place, there must be IRON, OXYGEN and _________. 3) Many changes take place everyday. Some of them are reversible and others ...
... a) Complete these sentences. i. For BURNING to take place, there must be a FUEL, OXYGEN and _________. ii. For RUSTING to take place, there must be IRON, OXYGEN and _________. 3) Many changes take place everyday. Some of them are reversible and others ...
H - JMap
... If you wish to change an answer, erase your first penciled circle and then circle with pencil the number of the answer you want. After you have completed the examination and you have decided that all of the circled answers represent your best judgment, signal a proctor and turn in all examination ma ...
... If you wish to change an answer, erase your first penciled circle and then circle with pencil the number of the answer you want. After you have completed the examination and you have decided that all of the circled answers represent your best judgment, signal a proctor and turn in all examination ma ...
1 1. Give two reasons why a luminous flame is not used for heating
... b) Calculate the molar enthalpy of formation of butane C4H10 from its elements in their normal states at standard temperature and pressure. 2mks*UG* When calcium carbonate was added to a solution of dry hydrogen chloride in methyl benzene there was no observable reaction explain. 2mks*UG* The chief ...
... b) Calculate the molar enthalpy of formation of butane C4H10 from its elements in their normal states at standard temperature and pressure. 2mks*UG* When calcium carbonate was added to a solution of dry hydrogen chloride in methyl benzene there was no observable reaction explain. 2mks*UG* The chief ...
Element - the simplest form of matter that can exist under normal
... Academic Chemistry Mr. Gensits Class Notes 10/6/2009 Elements, Compounds, and Chemical Changes Element - the simplest form of matter that can exist under normal laboratory conditions Elements are pure substances. Elements cannot be separated into simpler substances by chemical means. Elements are th ...
... Academic Chemistry Mr. Gensits Class Notes 10/6/2009 Elements, Compounds, and Chemical Changes Element - the simplest form of matter that can exist under normal laboratory conditions Elements are pure substances. Elements cannot be separated into simpler substances by chemical means. Elements are th ...
chemistry
... The last page of the booklet is the answer sheet. Fold the last page along the perforations and, slowly and carefully, tear off the answer sheet. Then fill in the heading of your answer sheet. All of your answers are to be recorded on the separate answer sheet. For each question, decide which of the ...
... The last page of the booklet is the answer sheet. Fold the last page along the perforations and, slowly and carefully, tear off the answer sheet. Then fill in the heading of your answer sheet. All of your answers are to be recorded on the separate answer sheet. For each question, decide which of the ...
Science 10 Chem - Holy Trinity Academy
... Mass is so very small that it doesn’t affect the total mass of the atom o -electrons are located in energy levels and the level number depends on # of electrons o -electrons are lazy (want to stay close to the nucleus/less energy need) o *electrons gain energy (heated) they may jump into next leve ...
... Mass is so very small that it doesn’t affect the total mass of the atom o -electrons are located in energy levels and the level number depends on # of electrons o -electrons are lazy (want to stay close to the nucleus/less energy need) o *electrons gain energy (heated) they may jump into next leve ...
Chemistry Unit Test Study Guide (2012-2013)
... Neutral substances have a pH of __________. An example of a common neutral substance is ____________. Acids- Name 3 properties (ex: feel, taste, uses, etc.): 1. _______________ 2. _______________ 3. _____________ a. pH range for acids: ____________ Bases- Name 3 properties (ex: feel, taste, uses, et ...
... Neutral substances have a pH of __________. An example of a common neutral substance is ____________. Acids- Name 3 properties (ex: feel, taste, uses, etc.): 1. _______________ 2. _______________ 3. _____________ a. pH range for acids: ____________ Bases- Name 3 properties (ex: feel, taste, uses, et ...
Glossary
... Product − material produced in a chemical reaction. Problem − a situation or question requiring resolution or answer. Proton − a sub-atomic component of the nucleus of atoms having a charge of plus one atomic charge unit (acu), or +1. 6022 x 10−19 Coulomb, and a mass of 1.00727644 atomic mass units ...
... Product − material produced in a chemical reaction. Problem − a situation or question requiring resolution or answer. Proton − a sub-atomic component of the nucleus of atoms having a charge of plus one atomic charge unit (acu), or +1. 6022 x 10−19 Coulomb, and a mass of 1.00727644 atomic mass units ...
Project Advance Chemistry 106 Sample Questions
... 18. Uric acid, a weak monoprotic acid (HA), is a metabolic end product and is excreted from the body in urine. The acid dissociation constant of uric acid is Ka = 4.0 10-6 M. The pH of a urine sample is 6.00. What is the ratio of urate ion to uric acid in the urine? A. B. C. D. E. ...
... 18. Uric acid, a weak monoprotic acid (HA), is a metabolic end product and is excreted from the body in urine. The acid dissociation constant of uric acid is Ka = 4.0 10-6 M. The pH of a urine sample is 6.00. What is the ratio of urate ion to uric acid in the urine? A. B. C. D. E. ...
New substances are formed by chemical reactions. When elements
... non-metal atoms gain electrons to form negatively charged ions ...
... non-metal atoms gain electrons to form negatively charged ions ...
Chemistry - Beachwood City Schools
... 2. Using a solubility table, decide whether a precipitate will form when the following solutions are mixed. If a precipitate forms, write a net ionic equation for the reaction. a) iron(III) nitrate and potassium hydroxide b) ammonium chloride and lithium carbonate c) sodium sulfide and nickel(II) su ...
... 2. Using a solubility table, decide whether a precipitate will form when the following solutions are mixed. If a precipitate forms, write a net ionic equation for the reaction. a) iron(III) nitrate and potassium hydroxide b) ammonium chloride and lithium carbonate c) sodium sulfide and nickel(II) su ...
Sep 2
... will have the same proportions of elements Two different samples of CO2: Sample 1: 25.6 g O; 9.6 g C Sample 2: 21.6 g O; 8.10 g C ...
... will have the same proportions of elements Two different samples of CO2: Sample 1: 25.6 g O; 9.6 g C Sample 2: 21.6 g O; 8.10 g C ...
29.2 Chemical Bonds
... between solid, liquid, and gas are traditionally considered part of chemistry, as are the gas laws. These kinds of changes in matter are called physical changes, because matter changes physical form but one substance does not change into a completely different substance. ...
... between solid, liquid, and gas are traditionally considered part of chemistry, as are the gas laws. These kinds of changes in matter are called physical changes, because matter changes physical form but one substance does not change into a completely different substance. ...
Document
... between solid, liquid, and gas are traditionally considered part of chemistry, as are the gas laws. These kinds of changes in matter are called physical changes, because matter changes physical form but one substance does not change into a completely different substance. ...
... between solid, liquid, and gas are traditionally considered part of chemistry, as are the gas laws. These kinds of changes in matter are called physical changes, because matter changes physical form but one substance does not change into a completely different substance. ...
Higher Tier, Unit C2: Chemistry
... carbonate), coke (carbon) and hot air are used. (i) What happens to the limestone in the Blast Furnace? ...
... carbonate), coke (carbon) and hot air are used. (i) What happens to the limestone in the Blast Furnace? ...
Reactions and Balancing
... molecular form (O2). The result is a direct chemical combination of the two elements (Fe2O3, iron (III) oxide, which is “rust”). * we knew to use iron (III) b/c 3 is the most common ion when we look at the oxidation state periodic table ...
... molecular form (O2). The result is a direct chemical combination of the two elements (Fe2O3, iron (III) oxide, which is “rust”). * we knew to use iron (III) b/c 3 is the most common ion when we look at the oxidation state periodic table ...
Notes 2 Balancing
... • Count the number of atoms of each element in the reactants and in the products, and record the results in a table. • Identify elements that appear in only one reactant and in only one product, and balance the atoms of those elements first. Delay the balancing of atoms (often hydrogen and oxygen) t ...
... • Count the number of atoms of each element in the reactants and in the products, and record the results in a table. • Identify elements that appear in only one reactant and in only one product, and balance the atoms of those elements first. Delay the balancing of atoms (often hydrogen and oxygen) t ...
rethinking sulfidization and the role of hydrogen sulfide
... • We present a set of chemical reactions to represent sulfidization leading to a revised overall sulfidization reaction that generates hydrogen as a product instead of consuming oxygen as a reactant (these reactions are in our abstract). • We envision that S of aqueous sulfate in tidal marsh and coa ...
... • We present a set of chemical reactions to represent sulfidization leading to a revised overall sulfidization reaction that generates hydrogen as a product instead of consuming oxygen as a reactant (these reactions are in our abstract). • We envision that S of aqueous sulfate in tidal marsh and coa ...
Chemical Reactions - Northside Middle School
... C, H, and maybe O is reacted with oxygen • If the combustion is complete, the products will be CO2 and H2O. • If the combustion is incomplete, the products will be CO (possibly just C) and H2O. ...
... C, H, and maybe O is reacted with oxygen • If the combustion is complete, the products will be CO2 and H2O. • If the combustion is incomplete, the products will be CO (possibly just C) and H2O. ...
File
... 28. At STP, the volume of 1.00 mole of O2, N2, or He gas is 22.4 liters. However, the volume of 1.00 mole of SO2 gas at STP is 21.9 liters. The best explanation of the smaller volume occupied by the SO2 molecules is A) the larger SO2 molecules cannot be treated as point sources, and occupy a signif ...
... 28. At STP, the volume of 1.00 mole of O2, N2, or He gas is 22.4 liters. However, the volume of 1.00 mole of SO2 gas at STP is 21.9 liters. The best explanation of the smaller volume occupied by the SO2 molecules is A) the larger SO2 molecules cannot be treated as point sources, and occupy a signif ...
Chemistry Content Standards
... a. Compare and contrast atomic/molecular motion in solids, liquids, gases, and plasmas. b. Collect data and calculate the amount of heat given off or taken in by chemical or physical processes. c. Analyzing (both conceptually and quantitatively) flow of energy during change of state (phase). Teacher ...
... a. Compare and contrast atomic/molecular motion in solids, liquids, gases, and plasmas. b. Collect data and calculate the amount of heat given off or taken in by chemical or physical processes. c. Analyzing (both conceptually and quantitatively) flow of energy during change of state (phase). Teacher ...
1) - Kurt Niedenzu
... c) diffusion of electrons to all energy levels d) equal number of electrons in the outermost and innermost energy levels 14) Why is NH3 classified as polar molecule? a) It is a gas at STP b) N-H bonds are non-polar c) Nitrogen and hydrogen are both nonmetals. d) NH3 molecules have asymmetrical charg ...
... c) diffusion of electrons to all energy levels d) equal number of electrons in the outermost and innermost energy levels 14) Why is NH3 classified as polar molecule? a) It is a gas at STP b) N-H bonds are non-polar c) Nitrogen and hydrogen are both nonmetals. d) NH3 molecules have asymmetrical charg ...
Redox
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.