Chapter 2 - Woodhaven High School
... Elements are represented by a one or two letter symbol. This is the symbol for carbon. All atoms of the same element have the same number of protons, which is called the atomic number, Z. It is written as a subscript BEFORE the symbol. The mass number is the total number of protons and neutron ...
... Elements are represented by a one or two letter symbol. This is the symbol for carbon. All atoms of the same element have the same number of protons, which is called the atomic number, Z. It is written as a subscript BEFORE the symbol. The mass number is the total number of protons and neutron ...
Chemistry and the material world
... K = 1 means that the reaction quotient is balanced. There is approximately the same amount of educt and product in the reaction mixture. K > 1 means that that the numerator in the reaction quotient is larger. There is more product in the reaction mixture. K < 1 means that the denominator in the reac ...
... K = 1 means that the reaction quotient is balanced. There is approximately the same amount of educt and product in the reaction mixture. K > 1 means that that the numerator in the reaction quotient is larger. There is more product in the reaction mixture. K < 1 means that the denominator in the reac ...
File
... case, since a new substance is formed, it is a chemical change. ***Note that the number and kind of atoms on the left side of the equation equal the number and kind of atoms on the right side of the equation. Only the arrangement of the atoms has changed in going from reactants to products. The equa ...
... case, since a new substance is formed, it is a chemical change. ***Note that the number and kind of atoms on the left side of the equation equal the number and kind of atoms on the right side of the equation. Only the arrangement of the atoms has changed in going from reactants to products. The equa ...
Ch9_10notes maroon edition
... We’ve talked about the “like dissolves like” concept before—polar substance dissolve in polar solvents; Nonpolar substances dissolve in nonpolar solvents. However, the polarity this concept refers to is not the polarity of bonds; it is the polarity of molecules. Therefore, we must be able to ascerta ...
... We’ve talked about the “like dissolves like” concept before—polar substance dissolve in polar solvents; Nonpolar substances dissolve in nonpolar solvents. However, the polarity this concept refers to is not the polarity of bonds; it is the polarity of molecules. Therefore, we must be able to ascerta ...
W1 WORKSHOP ON STOICHIOMETRY
... When an ionic solid dissolves in water to form a solution, the charges on the ions are indicated. NaCl(s) → Na+(aq) + Cl–(aq) Again, the atoms must balance. Notice also that the electrical charges present on both sides of the equation must balance as well. In another example: BaCl2(s) → Ba2+(aq) + 2 ...
... When an ionic solid dissolves in water to form a solution, the charges on the ions are indicated. NaCl(s) → Na+(aq) + Cl–(aq) Again, the atoms must balance. Notice also that the electrical charges present on both sides of the equation must balance as well. In another example: BaCl2(s) → Ba2+(aq) + 2 ...
ppt
... predicted concentration of NaOH in the solution assuming the volume of water does not change? ...
... predicted concentration of NaOH in the solution assuming the volume of water does not change? ...
Power Point over chemistry
... A calorie is the amount of heat needed to make 1 g of water rise 1o C in temperature. The higher a substance’s specific heat, the harder it is to increase its temperature (as with the cloth car seat). The opposite is also true: a substance with lower specific heat increases in temperature very easil ...
... A calorie is the amount of heat needed to make 1 g of water rise 1o C in temperature. The higher a substance’s specific heat, the harder it is to increase its temperature (as with the cloth car seat). The opposite is also true: a substance with lower specific heat increases in temperature very easil ...
Spring 2013 Semester Exam Study Guide (Bonding, Nomenclature
... Identify the choice that best completes the statement or answers the question. ____ ...
... Identify the choice that best completes the statement or answers the question. ____ ...
1 Democritus` Idea of the Atom
... a very small space in the atom’s interior, which he called the nucleus. The nucleus is the tiny, dense, central core of the atom and is composed of protons and neutrons. Rutherford’s atomic model became known as the nuclear model. In the nuclear atom, the protons and neutrons, which comprise nearly ...
... a very small space in the atom’s interior, which he called the nucleus. The nucleus is the tiny, dense, central core of the atom and is composed of protons and neutrons. Rutherford’s atomic model became known as the nuclear model. In the nuclear atom, the protons and neutrons, which comprise nearly ...
Lecture 2
... In the nineteen sixties, Ralph Pearson developed the Type A and and Type B logic by explaining the differential complexation behaviour of cations and ligands in terms of electron pair donating Lewis bases and electron pair accepting Lewis acids: Lewis acid + Lewis base Lewis acid/base complex Pearso ...
... In the nineteen sixties, Ralph Pearson developed the Type A and and Type B logic by explaining the differential complexation behaviour of cations and ligands in terms of electron pair donating Lewis bases and electron pair accepting Lewis acids: Lewis acid + Lewis base Lewis acid/base complex Pearso ...
Bose Einstein Condensation
... lasted for 15 seconds to 20 seconds. New machines can now make condensates of much greater numbers of atoms that last for up to 3 minutes. ...
... lasted for 15 seconds to 20 seconds. New machines can now make condensates of much greater numbers of atoms that last for up to 3 minutes. ...
US Army medical course General Chemistry
... separated matter by all the methods (chemical and physical) available to them until they could not separate it any further. They felt this separation must result in the building block of matter, which they called the atom (from the Greek word for indivisible). They also observed that the basic units ...
... separated matter by all the methods (chemical and physical) available to them until they could not separate it any further. They felt this separation must result in the building block of matter, which they called the atom (from the Greek word for indivisible). They also observed that the basic units ...
Practice Question
... Wednesday, May 12 – Tuesday, May 25 During the time that the test is available, you may take it anytime you wish and as many times as you want. Only the last submission will be saved and graded. I made it available for more time than I originally noted in the syllabus. The only reason I did this was ...
... Wednesday, May 12 – Tuesday, May 25 During the time that the test is available, you may take it anytime you wish and as many times as you want. Only the last submission will be saved and graded. I made it available for more time than I originally noted in the syllabus. The only reason I did this was ...
幻灯片 1
... way different orbitals are filled is controlled by their energies (and hence their An atom consists of a very small positively charged nucleus, Electron and Nuclei different screening by other electrons) and by the Pauli exclusion principle. surrounded by negative electrons held by electrostatic att ...
... way different orbitals are filled is controlled by their energies (and hence their An atom consists of a very small positively charged nucleus, Electron and Nuclei different screening by other electrons) and by the Pauli exclusion principle. surrounded by negative electrons held by electrostatic att ...
ANSWERS Problem Set 5a – Chemical Reactions
... Subscripts are underlined, Coefficients are boxed 3 H2SO4+ 2 Al Al2(SO4)3 + 3 H2 11) Write the word equation for the following balanced reactions: a. 2 Mg (s) + O2 (g) 2 MgO (s) solid magnesium reacts with oxygen gas to produce solid magnesium oxide in a synthesis reaction. b. HCl (aq) + NaOH (a ...
... Subscripts are underlined, Coefficients are boxed 3 H2SO4+ 2 Al Al2(SO4)3 + 3 H2 11) Write the word equation for the following balanced reactions: a. 2 Mg (s) + O2 (g) 2 MgO (s) solid magnesium reacts with oxygen gas to produce solid magnesium oxide in a synthesis reaction. b. HCl (aq) + NaOH (a ...
preliminary course outline facilitators course description
... will a chemical reaction go?” and “How quickly will it get there?” Chapters 15 and 16 build on the fundamentals of Chapter 14 to examine the strengths of acids and bases and why it’s OK to put vinegar on your fries but not hydrochloric acid! In Chapter 17 we examine the energetic reasons why reactio ...
... will a chemical reaction go?” and “How quickly will it get there?” Chapters 15 and 16 build on the fundamentals of Chapter 14 to examine the strengths of acids and bases and why it’s OK to put vinegar on your fries but not hydrochloric acid! In Chapter 17 we examine the energetic reasons why reactio ...
Matter is anything that has mass and occupies space. Three
... If two elements can combine to form more than one compound, then the masses of one element that combines with a fixed mass of the other element are in the ratio of small whole numbers. Gay Lussac’s Law of Gaseous Volumes: When gases combine or are produced in a chemical reaction, they do so in a sim ...
... If two elements can combine to form more than one compound, then the masses of one element that combines with a fixed mass of the other element are in the ratio of small whole numbers. Gay Lussac’s Law of Gaseous Volumes: When gases combine or are produced in a chemical reaction, they do so in a sim ...
Advanced Chemical Reactions
... Atoms with large electronegativity differences form ionic bonds by electron transfers 2Na + Cl2 2NaCl Can be written as 2Na + Cl2 2Na+Cl- ...
... Atoms with large electronegativity differences form ionic bonds by electron transfers 2Na + Cl2 2NaCl Can be written as 2Na + Cl2 2Na+Cl- ...
Word Document
... importance of science literacy for a vibrant society, the need for students at all levels to be able to use scientific principles and processes meaningfully, and the critical role of the student in the learning process (constructivism). Standards and plans for action have been delineated in the docu ...
... importance of science literacy for a vibrant society, the need for students at all levels to be able to use scientific principles and processes meaningfully, and the critical role of the student in the learning process (constructivism). Standards and plans for action have been delineated in the docu ...
class notes 4
... 4.5 Types of aqueous Solutions and Solubility Electrolyte and Nonelectrolyte Solutions Electrolyte: A substance that produces ions in a water solution and therefore conducts a current of electricity. Strong Electrolyte: A substance that dissociates completely in water solution to produce a lot of i ...
... 4.5 Types of aqueous Solutions and Solubility Electrolyte and Nonelectrolyte Solutions Electrolyte: A substance that produces ions in a water solution and therefore conducts a current of electricity. Strong Electrolyte: A substance that dissociates completely in water solution to produce a lot of i ...
Unit 2 – Quantities Review
... 10. Magnesium hydroxide is a base that is used in some antacids. What is the mass in grams of 0.45 mol of magnesium hydroxide? 11. Ammonia is a gas that, dissolved in water, is used as a cleaning agent. Convert 87 mmol of ammonia, NH3(g), into mass in grams. (Hint: 1 mol = 1000 mmol, you will need t ...
... 10. Magnesium hydroxide is a base that is used in some antacids. What is the mass in grams of 0.45 mol of magnesium hydroxide? 11. Ammonia is a gas that, dissolved in water, is used as a cleaning agent. Convert 87 mmol of ammonia, NH3(g), into mass in grams. (Hint: 1 mol = 1000 mmol, you will need t ...
6.1 Moles and Molar Masses
... Empirical formulas can be calculated from lab data, allowing us to identify unknown compounds: STEP 1: Assume mass percentages represent masses, in g: STEP 2: Divide each element's mass by their respective molar masses, turning them into moles. STEP 3: Divide all moles by the lowest number of moles ...
... Empirical formulas can be calculated from lab data, allowing us to identify unknown compounds: STEP 1: Assume mass percentages represent masses, in g: STEP 2: Divide each element's mass by their respective molar masses, turning them into moles. STEP 3: Divide all moles by the lowest number of moles ...
ap chemistry 2005/2006
... identification as physical or chemical change. Lab: Determining the Specific Heat of an Unknown Metal – the specific heat capacity of a nail will be experimentally determined by measuring the temperature change of water and of the nail after it has been heated to approximately 850 degrees Celsius in ...
... identification as physical or chemical change. Lab: Determining the Specific Heat of an Unknown Metal – the specific heat capacity of a nail will be experimentally determined by measuring the temperature change of water and of the nail after it has been heated to approximately 850 degrees Celsius in ...
Week 8 - Day 3 (End of Chapter 6)
... Orbital Diagram for the Formation of H2S .......................................................................................... 13 Valence Bond Theory and NH3 ................................................................................................................ 13 Hybridization – mixin ...
... Orbital Diagram for the Formation of H2S .......................................................................................... 13 Valence Bond Theory and NH3 ................................................................................................................ 13 Hybridization – mixin ...