Nomenclature and chemical reactions PPT
... Evolution of gas (bubbles and/or odor) Appearance of a solid (precipitate) ...
... Evolution of gas (bubbles and/or odor) Appearance of a solid (precipitate) ...
Midterm Review - Closter Public Schools
... Matter is said to be ______________ when it is has only one type of particle. Matter is said to be ______________when it has more than one type of particle. A ______________ is a pure substance that contains only a single type of atom. A ______________ is a pure substance that consists of two or mor ...
... Matter is said to be ______________ when it is has only one type of particle. Matter is said to be ______________when it has more than one type of particle. A ______________ is a pure substance that contains only a single type of atom. A ______________ is a pure substance that consists of two or mor ...
Theoretical problems (official version)
... (such assumption holds if a small number of molecules is adsorbed on the surface) Adsorption properties of graphene can be estimated from the data for adsorption on a regular three-dimensional graphite. The enthalpy of adsorption (ΔHo of reaction (1)) of any molecule A on graphene is on average by 1 ...
... (such assumption holds if a small number of molecules is adsorbed on the surface) Adsorption properties of graphene can be estimated from the data for adsorption on a regular three-dimensional graphite. The enthalpy of adsorption (ΔHo of reaction (1)) of any molecule A on graphene is on average by 1 ...
Science-M2-Basic-Che..
... It may be useful to draw a carbon atom and one other atom to illustrate the difference between elements. You can use the carbon atom to show its atomic number and mass and then elicit the atomic number and mass of the other atom. Finally, draw an isotope of carbon (perhaps carbon 14) and one of the ...
... It may be useful to draw a carbon atom and one other atom to illustrate the difference between elements. You can use the carbon atom to show its atomic number and mass and then elicit the atomic number and mass of the other atom. Finally, draw an isotope of carbon (perhaps carbon 14) and one of the ...
Chapter 3 - Stoichiometry
... 2] The molar mass of a compound is 134.00 g/mol. If the compound is 34.31% sodium, 17.93% carbon, and the rest is oxygen, find the molecular formula of the compound. ...
... 2] The molar mass of a compound is 134.00 g/mol. If the compound is 34.31% sodium, 17.93% carbon, and the rest is oxygen, find the molecular formula of the compound. ...
CHEMONE Directions: Select the letter of the best
... 11. If the radius of atom X is greater than the radius of atom Y, then it is also likely that: a. X has a larger ionization energy than Y does. b. X is a poorer conductor of electricity than Y when in the solid state. c. X has a larger electron affinity than Y does. d. X has a larger effective nucle ...
... 11. If the radius of atom X is greater than the radius of atom Y, then it is also likely that: a. X has a larger ionization energy than Y does. b. X is a poorer conductor of electricity than Y when in the solid state. c. X has a larger electron affinity than Y does. d. X has a larger effective nucle ...
Chapter 4
... A 50.0 mL sample of a sodium hydroxide solution is to be standardized. 1.3009 M of KHP (potassium hydrogen phthalate, KHC8H4O4) is used as the titrant. KHP has one acidic hydrogen. 41.20 mL of the KHP solution is used to titrate the sodium hydroxide solution to the endpoint. What is the resulting co ...
... A 50.0 mL sample of a sodium hydroxide solution is to be standardized. 1.3009 M of KHP (potassium hydrogen phthalate, KHC8H4O4) is used as the titrant. KHP has one acidic hydrogen. 41.20 mL of the KHP solution is used to titrate the sodium hydroxide solution to the endpoint. What is the resulting co ...
03 Stoichiometry
... Chemical reactions are the result of a chemical change where atoms are reorganized into one or more new arrangements. Bonds are broken [requires energy] and new ones are formed [releases energy]. CHEMICAL EQUATIONS ...
... Chemical reactions are the result of a chemical change where atoms are reorganized into one or more new arrangements. Bonds are broken [requires energy] and new ones are formed [releases energy]. CHEMICAL EQUATIONS ...
Grades 9-12 Chemistry California Content Standards
... conservation of matter and the ability to calculate the mass of products and reactants. As a basis for understanding this concept, students know: a. how to describe chemical reactions by writing balanced equations. b. the quantity one mole is defined so that one mole of carbon 12 atoms has a mass of ...
... conservation of matter and the ability to calculate the mass of products and reactants. As a basis for understanding this concept, students know: a. how to describe chemical reactions by writing balanced equations. b. the quantity one mole is defined so that one mole of carbon 12 atoms has a mass of ...
Chemistry - Gorman Learning Center
... conservation of matter and the ability to calculate the mass of products and reactants. As a basis for understanding this concept, students know: a. how to describe chemical reactions by writing balanced equations. b. the quantity one mole is defined so that one mole of carbon 12 atoms has a mass of ...
... conservation of matter and the ability to calculate the mass of products and reactants. As a basis for understanding this concept, students know: a. how to describe chemical reactions by writing balanced equations. b. the quantity one mole is defined so that one mole of carbon 12 atoms has a mass of ...
Unit 2 Spiraling
... 8.. Dalton’s atomic theory was not correct in every detail. Should this be taken as criticism of Dalton as a scientist? Explain. 9. What was inadequate about Rutherford’s model of the atom? 10. What did Bohr assume about the motions of electrons? Subscripts in a chemical formula represent the relati ...
... 8.. Dalton’s atomic theory was not correct in every detail. Should this be taken as criticism of Dalton as a scientist? Explain. 9. What was inadequate about Rutherford’s model of the atom? 10. What did Bohr assume about the motions of electrons? Subscripts in a chemical formula represent the relati ...
final review cp2 1213 by chapter
... Chapter # 5 Inter and Intramolecular Forces: 1.Which of the following explains why methane (CH4) has a boiling point of – 161 °C and octane (C8H18) has a boiling point of 125.6 °C. A.the London dispersion forces are stronger in methane B.the hydrogen bonds are stronger in octane C.octane can hydroge ...
... Chapter # 5 Inter and Intramolecular Forces: 1.Which of the following explains why methane (CH4) has a boiling point of – 161 °C and octane (C8H18) has a boiling point of 125.6 °C. A.the London dispersion forces are stronger in methane B.the hydrogen bonds are stronger in octane C.octane can hydroge ...
Terminology 1
... Matter that has a particular set of characteristics differs from the characteristics of another kind of matter Eg. ...
... Matter that has a particular set of characteristics differs from the characteristics of another kind of matter Eg. ...
Student Worksheet The Chemistry of Water Quality Tests
... represented by a balanced chemical equation that identifies the ratios with which reactants react and products form. Essential knowledge 3.A.1: A chemical change may be represented by a molecular, ionic, or net ionic equation. Enduring understanding 3.B: Chemical reactions can be classified by consi ...
... represented by a balanced chemical equation that identifies the ratios with which reactants react and products form. Essential knowledge 3.A.1: A chemical change may be represented by a molecular, ionic, or net ionic equation. Enduring understanding 3.B: Chemical reactions can be classified by consi ...
Balancing Chemical Equations
... multiple molecules or formula units. You can only add coefficients to balance an equation. You can never change the subscripts. This would change the identity of that compound. A coefficient is placed before a molecule. A coefficient pertains to every element in the compound, regardless of parenthes ...
... multiple molecules or formula units. You can only add coefficients to balance an equation. You can never change the subscripts. This would change the identity of that compound. A coefficient is placed before a molecule. A coefficient pertains to every element in the compound, regardless of parenthes ...
Name_____________________________________ Chemistry
... 78. List 4 types of chemical reactions: a. b. c. d. 79. a. A + B → AB is an example of a(n) ____________________________ reaction. b. AB → A + B is an example of a(n) ____________________________ reaction. c. A + BC → AC + B is an example of a(n) ____________________________ reaction. d. AB + CD → A ...
... 78. List 4 types of chemical reactions: a. b. c. d. 79. a. A + B → AB is an example of a(n) ____________________________ reaction. b. AB → A + B is an example of a(n) ____________________________ reaction. c. A + BC → AC + B is an example of a(n) ____________________________ reaction. d. AB + CD → A ...
Stoichiometry - WordPress.com
... • A molar mass is the mass of 1 mol of a substance (i.e., g/mol). • The molar mass of an element is the atomic weight for the element from the periodic table. If it is diatomic, it is twice that atomic weight. • The formula weight (in amu’s) will be the same number as the molar mass (in g/mol). © 20 ...
... • A molar mass is the mass of 1 mol of a substance (i.e., g/mol). • The molar mass of an element is the atomic weight for the element from the periodic table. If it is diatomic, it is twice that atomic weight. • The formula weight (in amu’s) will be the same number as the molar mass (in g/mol). © 20 ...
1617 Ch3 Practice Test Key Student
... 3. Nitrogen gas, N2, can be prepared by reacting copper (II) oxide with ammonia gas, NH 3. Along with production of N2, the reaction also produces solid copper, Cu, and gaseous water. A) Write a complete balanced equation for the reaction described. The correct formula for copper (II) oxide must be ...
... 3. Nitrogen gas, N2, can be prepared by reacting copper (II) oxide with ammonia gas, NH 3. Along with production of N2, the reaction also produces solid copper, Cu, and gaseous water. A) Write a complete balanced equation for the reaction described. The correct formula for copper (II) oxide must be ...
Ms - cloudfront.net
... heated, the actual yield of CaO is 1.50 x 103g. What is the percent yield? CaCO3 CaO + CO2 48. If 1.85g of Aluminum reacts with an excess of Copper (II) Sulfate (CuSO4), the percentage yield of Cu is 56.6%. What mass of Cu is produced? 2Al + 3CuSO4 3Cu + Al2(SO4)3 49. Assume that 2.0mol of metha ...
... heated, the actual yield of CaO is 1.50 x 103g. What is the percent yield? CaCO3 CaO + CO2 48. If 1.85g of Aluminum reacts with an excess of Copper (II) Sulfate (CuSO4), the percentage yield of Cu is 56.6%. What mass of Cu is produced? 2Al + 3CuSO4 3Cu + Al2(SO4)3 49. Assume that 2.0mol of metha ...
7.7 The Laws of Thermodynamics and How They Relate to the
... 7.7 The Laws of Thermodynamics and How They Relate to the Spontaneity of a Reaction Spontaneous reactions are those which proceed in a forward direction continuously, once they have been given the right amount of energy (the activation energy). For example once you light a candle it will continue to ...
... 7.7 The Laws of Thermodynamics and How They Relate to the Spontaneity of a Reaction Spontaneous reactions are those which proceed in a forward direction continuously, once they have been given the right amount of energy (the activation energy). For example once you light a candle it will continue to ...
Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.