I. scientific notation. – a shorthand that scientists use when dealing
... b. the SI unit of heat and energy is the joule (J). [another useful unit is the calorie – the amount of heat required to raise the temperature of 1 g of H2O from 14.5ºC to 15.5ºC. 1 cal = 4.184 J.] c. specific heat – the amount of heat (usually expressed in joules) required to raise the temperature ...
... b. the SI unit of heat and energy is the joule (J). [another useful unit is the calorie – the amount of heat required to raise the temperature of 1 g of H2O from 14.5ºC to 15.5ºC. 1 cal = 4.184 J.] c. specific heat – the amount of heat (usually expressed in joules) required to raise the temperature ...
Answers to Final Exam Review
... b. There is an increase in kinetic energy and condensation is occurring. c. There is an increase in potential energy and freezing is occurring. d. There is an increase in potential energy and melting is occurring. 66. Compare the phase diagrams. What can be said about the relationship between the pr ...
... b. There is an increase in kinetic energy and condensation is occurring. c. There is an increase in potential energy and freezing is occurring. d. There is an increase in potential energy and melting is occurring. 66. Compare the phase diagrams. What can be said about the relationship between the pr ...
LIQUIDS
... see this if we dilute a solution of potassium manganate(VI) many times. It is still coloured even when it is very dilute. Definition: An atom is the smallest particle of an element that can exist or take part in a chemical change. MOLECULES All elements are made up of atoms. In some gaseous elements ...
... see this if we dilute a solution of potassium manganate(VI) many times. It is still coloured even when it is very dilute. Definition: An atom is the smallest particle of an element that can exist or take part in a chemical change. MOLECULES All elements are made up of atoms. In some gaseous elements ...
UNIT 1 - MATTER AND CHEMICAL BONDING
... a) How many moles of glucose molecules are present? b) How many molecules are there? c) How many atoms of oxygen are there? (Note: be able to solve this problem using the unit conversion method) 3. An oxide of nitrogen was found to contain 36.8% nitrogen by mass. a) Find the empirical formula for th ...
... a) How many moles of glucose molecules are present? b) How many molecules are there? c) How many atoms of oxygen are there? (Note: be able to solve this problem using the unit conversion method) 3. An oxide of nitrogen was found to contain 36.8% nitrogen by mass. a) Find the empirical formula for th ...
AP Chemistry
... 8. You filled your previously empty gas tank with $7.90 worth of gas. How many miles can you drive if the mileage of your car is 14 km/Liter of gas and the price of gas is $1.29 per gallon? 9. Which is greater? 12.5 kg or 1200 g? 10. Which is the higher temperature? 25°C or 310 K? 11. The density o ...
... 8. You filled your previously empty gas tank with $7.90 worth of gas. How many miles can you drive if the mileage of your car is 14 km/Liter of gas and the price of gas is $1.29 per gallon? 9. Which is greater? 12.5 kg or 1200 g? 10. Which is the higher temperature? 25°C or 310 K? 11. The density o ...
File - Mr. L`s Room
... Characterisitcs of Science: Each of these items were covered on the previous study guides: Safety, Scientific Method (Process), Experimental Design, Lab Equipment, and Measurements (including SI Units). S8P1a Atoms and Molecules: See Atoms and the Periodic Table as well. 1. Define atom, element, mol ...
... Characterisitcs of Science: Each of these items were covered on the previous study guides: Safety, Scientific Method (Process), Experimental Design, Lab Equipment, and Measurements (including SI Units). S8P1a Atoms and Molecules: See Atoms and the Periodic Table as well. 1. Define atom, element, mol ...
Band Theories
... in this case the empty orbitals are very close in energy to the Fermi level, so it requires hardly any energy to excite the uppermost electrons. So some of the electrons are very mobile and give rise to electrical conductivity ...
... in this case the empty orbitals are very close in energy to the Fermi level, so it requires hardly any energy to excite the uppermost electrons. So some of the electrons are very mobile and give rise to electrical conductivity ...
C3.1 The Periodic Table
... Describe how the ordering of elements in periodic table was changed after the discovery of protons, neutrons and electrons in the early 20th century Explain how the modern periodic table can be seen as an arrangement of the elements in terms of their electronic structures, in terms of outer shell el ...
... Describe how the ordering of elements in periodic table was changed after the discovery of protons, neutrons and electrons in the early 20th century Explain how the modern periodic table can be seen as an arrangement of the elements in terms of their electronic structures, in terms of outer shell el ...
Which notation represents an atom of sodium
... a) The equation represents a physical change, with the product and reactants having different chemical properties. b) The equation represents a physical change, with the product and reactants having identical chemical properties. c) The equation represents a chemical change, with the product and rea ...
... a) The equation represents a physical change, with the product and reactants having different chemical properties. b) The equation represents a physical change, with the product and reactants having identical chemical properties. c) The equation represents a chemical change, with the product and rea ...
Notebook - Science
... proton: stable subatomic particle occurring in all atomic nuclei, with positive electric charge to that of an electron, but of opposite sign neutron: subatomic chargeless particle about the same mass as a proton, present in all atomic nuclei except ordinary hydrogen electron: stable subatomic partic ...
... proton: stable subatomic particle occurring in all atomic nuclei, with positive electric charge to that of an electron, but of opposite sign neutron: subatomic chargeless particle about the same mass as a proton, present in all atomic nuclei except ordinary hydrogen electron: stable subatomic partic ...
Introduction to Chemistry
... Ionic- Two elements bond by transferring electrons to create ions that attract together (+ is attracted to - after an electron is transferred) ...
... Ionic- Two elements bond by transferring electrons to create ions that attract together (+ is attracted to - after an electron is transferred) ...
Answers to Selected Questions and Problems
... (f) mass number; (g) isotope; (h) cation; (i) subatomic particle; (j) alkali metal; (k) periodic table Dalton used the laws of conservation of mass (Lavoisier) and definite proportions (Proust). They differ in their atomic masses and chemical properties. Compounds contain discrete numbers of atoms o ...
... (f) mass number; (g) isotope; (h) cation; (i) subatomic particle; (j) alkali metal; (k) periodic table Dalton used the laws of conservation of mass (Lavoisier) and definite proportions (Proust). They differ in their atomic masses and chemical properties. Compounds contain discrete numbers of atoms o ...
Lecture 2
... It is along the line joining the two particles and inversely proportional to the square of the separation distance, r, between them It is proportional to the product of the magnitudes of the charges, |q1|and |q2|on the two particles It is attractive if the charges are of opposite signs and repulsive ...
... It is along the line joining the two particles and inversely proportional to the square of the separation distance, r, between them It is proportional to the product of the magnitudes of the charges, |q1|and |q2|on the two particles It is attractive if the charges are of opposite signs and repulsive ...
Test - Regents
... 73 Which property is characteristic of nonmetals? (1) They have a high electronegativity. (2) They lose electrons easily. (3) They have a low first ionization energy. (4) They are good conductors of electricity. ...
... 73 Which property is characteristic of nonmetals? (1) They have a high electronegativity. (2) They lose electrons easily. (3) They have a low first ionization energy. (4) They are good conductors of electricity. ...
1 Unit 4 – Conservation of Mass and Stoichiometry
... C. The Stock System of Nomenclature 1. Roman numerals are used to denote the charge of metals that can form two or more cations. 2. The numeral is enclosed in parentheses and placed immediately after the metal name a. Iron(II) and Iron(III), pronounced “iron two” and “iron three” 3. Roman numerals a ...
... C. The Stock System of Nomenclature 1. Roman numerals are used to denote the charge of metals that can form two or more cations. 2. The numeral is enclosed in parentheses and placed immediately after the metal name a. Iron(II) and Iron(III), pronounced “iron two” and “iron three” 3. Roman numerals a ...
semiconductors
... Doping elements used to make N – Type materials all have 5 electrons in there outer shell and are referred to as pentavalent elements. When added to silicon or germanium, four of these electrons form covalent bonds with the semiconductor atoms. However, the fifth electron, although temporarily bound ...
... Doping elements used to make N – Type materials all have 5 electrons in there outer shell and are referred to as pentavalent elements. When added to silicon or germanium, four of these electrons form covalent bonds with the semiconductor atoms. However, the fifth electron, although temporarily bound ...
remaster unit 8A + 7
... • When ions are dissolved in water, they can conduct electricity – Because they can move charges in the liquid ...
... • When ions are dissolved in water, they can conduct electricity – Because they can move charges in the liquid ...
Final Exam Study Guide Chapters 1-12
... ____ 15. Which of these equations does not describe an inverse proportionality between x and y? a. xy = k c. y = k/x b. x = k/y d. k = x/y ____ 16. Which of the following is not part of Dalton's atomic theory? a. Atoms cannot be divided, created, or destroyed. b. The number of protons in an atom is ...
... ____ 15. Which of these equations does not describe an inverse proportionality between x and y? a. xy = k c. y = k/x b. x = k/y d. k = x/y ____ 16. Which of the following is not part of Dalton's atomic theory? a. Atoms cannot be divided, created, or destroyed. b. The number of protons in an atom is ...
Chemistry Packet: Chemical Bonding
... If 13 mol Mg+2 ions are present in a sample, then 26 mol Cl ions are present in the sample. ...
... If 13 mol Mg+2 ions are present in a sample, then 26 mol Cl ions are present in the sample. ...
Ch. 1: Atoms: The Quantum World
... their increasing energies. No more than two electrons per orbital (Pauli exclusion priniciple). 2. If more than one orbital in a subshell is available, electrons are added to the orbitals in that subshell with parallel spins until the subshell is half-full. Then electrons are start to be paired with ...
... their increasing energies. No more than two electrons per orbital (Pauli exclusion priniciple). 2. If more than one orbital in a subshell is available, electrons are added to the orbitals in that subshell with parallel spins until the subshell is half-full. Then electrons are start to be paired with ...
Chapter 3
... themselves in nature, rather they occur in compounds like NaCl or MgO Some occur as diatomic molecules: N2 , O2 , F2 , Cl2 , Br2 , and I2. Others like P and S are polyatomic. Only the metals of Gold, Copper, and Silver can sometimes be found in their pure state. ...
... themselves in nature, rather they occur in compounds like NaCl or MgO Some occur as diatomic molecules: N2 , O2 , F2 , Cl2 , Br2 , and I2. Others like P and S are polyatomic. Only the metals of Gold, Copper, and Silver can sometimes be found in their pure state. ...
Notes
... Metals high up in the electrochemical series are more reactive and tend to lose electrons easily whereas metals low down in the electrochemical series are less reactive and tend to hold on to their electrons. When two different metals are attached, electrons always flow from the metal higher in the ...
... Metals high up in the electrochemical series are more reactive and tend to lose electrons easily whereas metals low down in the electrochemical series are less reactive and tend to hold on to their electrons. When two different metals are attached, electrons always flow from the metal higher in the ...
In 1869, Russia`s Dmitri Mendeleev and Germany`s Lothar Meyer
... More information on the Periodic Table ...
... More information on the Periodic Table ...
CHEM 211: Physical Chemistry
... Attendance is required in all lectures. Surprise quizzes will be taken as and when the instructor wishes to do so. Homework: You will be assigned homework problems each week. All homework assignments must be worked out and submitted according to the specific directions and requirements of your instr ...
... Attendance is required in all lectures. Surprise quizzes will be taken as and when the instructor wishes to do so. Homework: You will be assigned homework problems each week. All homework assignments must be worked out and submitted according to the specific directions and requirements of your instr ...