ionic bond. - cloudfront.net
... – H-H is non-polar because H & H have the same EN’s. (EN diff. = 0) – Cl-Cl is non-polar because Cl & Cl have the same EN’s. (EN diff. = 0) – H-Cl is polar because H & Cl have different EN’s. ( H = 2.1, Cl = 3.0 ) ...
... – H-H is non-polar because H & H have the same EN’s. (EN diff. = 0) – Cl-Cl is non-polar because Cl & Cl have the same EN’s. (EN diff. = 0) – H-Cl is polar because H & Cl have different EN’s. ( H = 2.1, Cl = 3.0 ) ...
The Mole - semphchem
... • Enough soft drink cans to cover the surface of the earth to a depth of over 200 miles. • If you had Avogadro's number of unpopped popcorn kernels, and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles. • If we were able to count ato ...
... • Enough soft drink cans to cover the surface of the earth to a depth of over 200 miles. • If you had Avogadro's number of unpopped popcorn kernels, and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles. • If we were able to count ato ...
Atomic Theory
... which have the same atomic number. A pure substance is made up of only 1 type of atomic number. Arranged in the periodic table by increasing atomic number. The majority are metals. ...
... which have the same atomic number. A pure substance is made up of only 1 type of atomic number. Arranged in the periodic table by increasing atomic number. The majority are metals. ...
Table of Contents - Free Coursework for GCSE, IGCSE, A Level, IB
... which have the same atomic number. A pure substance is made up of only 1 type of atomic number. Arranged in the periodic table by increasing atomic number. The majority are metals. ...
... which have the same atomic number. A pure substance is made up of only 1 type of atomic number. Arranged in the periodic table by increasing atomic number. The majority are metals. ...
AP Chemistry - Jackson County School System
... A volatile liquid (one that evaporates) is put into a jar and the Jar is then sealed. Does the mass of the sealed jar and its contents change upon the vaporization of the liquid? Identify each of the following as being most like an observation, a law, or a theory. a. All coastal areas experience two ...
... A volatile liquid (one that evaporates) is put into a jar and the Jar is then sealed. Does the mass of the sealed jar and its contents change upon the vaporization of the liquid? Identify each of the following as being most like an observation, a law, or a theory. a. All coastal areas experience two ...
Unit 6 – Chemical Reactions: Particles and Energy
... rearrangement process of a chemical reaction requires that all atoms from the reactant molecules MUST become part of one of the products. The conservation of mass we observed at the beginning of the course is evident during chemical reactions; coefficients describe how many whole particles of each ...
... rearrangement process of a chemical reaction requires that all atoms from the reactant molecules MUST become part of one of the products. The conservation of mass we observed at the beginning of the course is evident during chemical reactions; coefficients describe how many whole particles of each ...
AP Chemistry
... When you measure something, however, you obtain a number that is not exact. For example, you can determine that a beaker has a mass of 250 g by weighing it on a scale. Using a different scale might give you a mass of 249.9 g for the same beaker. Yet another scale might report the mass as 249.89 g. W ...
... When you measure something, however, you obtain a number that is not exact. For example, you can determine that a beaker has a mass of 250 g by weighing it on a scale. Using a different scale might give you a mass of 249.9 g for the same beaker. Yet another scale might report the mass as 249.89 g. W ...
Unit 3: Bonding and Nomenclature Content Outline: Calculating
... II. Formula Mass A. This refers to the sum of the average atomic masses for all the atoms present within a chemical formula for any given ionic compounds formula ( formula unit), or ion. B. Step 1: Use the Periodic Table and the chemical formula to find the average atomic masses for each element pre ...
... II. Formula Mass A. This refers to the sum of the average atomic masses for all the atoms present within a chemical formula for any given ionic compounds formula ( formula unit), or ion. B. Step 1: Use the Periodic Table and the chemical formula to find the average atomic masses for each element pre ...
PPT Empirical & Molecular Formulas
... 2. Start by waving your right hand in front of you left to right. Your palm should be facing away from you while keeping your hand with your fingers pointing up. 3. Now stop that hand and have your left hand in front of you waving it up and down. 4. Now practice moving them at the SAME TIME. Do not ...
... 2. Start by waving your right hand in front of you left to right. Your palm should be facing away from you while keeping your hand with your fingers pointing up. 3. Now stop that hand and have your left hand in front of you waving it up and down. 4. Now practice moving them at the SAME TIME. Do not ...
Problem # 1
... The numbers of vacancies present in silver at 500°C and 900°C are 3.59 x1021 m−3 and 1024 m−3, respectively. Calculate the energy for vacancy formation in silver. Assume that the density at both temperatures is the same. (k = 1.38 x 10-23 J/atom-K or 8.62 x 10-5 eV/atom-K). ...
... The numbers of vacancies present in silver at 500°C and 900°C are 3.59 x1021 m−3 and 1024 m−3, respectively. Calculate the energy for vacancy formation in silver. Assume that the density at both temperatures is the same. (k = 1.38 x 10-23 J/atom-K or 8.62 x 10-5 eV/atom-K). ...
Student Exploration Sheet: Growing Plants
... substances can combine during a chemical reaction to produce new substances. The substances that undergo change are called reactants. The new substances are products. Sometimes during a chemical reaction, one type of reactant will be used up before the other reactants. This reactant is the limiting ...
... substances can combine during a chemical reaction to produce new substances. The substances that undergo change are called reactants. The new substances are products. Sometimes during a chemical reaction, one type of reactant will be used up before the other reactants. This reactant is the limiting ...
Name #_____
... Intramolecular – within a molecule (ex: for H-O-H, it is the bond between H-O and O-H). Intermolecular – between molecules (ex: for H2O, the attraction between many H2O molecules). 15. Rank the following forces in increasing intermolecular attraction: dipole-dipole, hydrogen-bond, electrostatic, ...
... Intramolecular – within a molecule (ex: for H-O-H, it is the bond between H-O and O-H). Intermolecular – between molecules (ex: for H2O, the attraction between many H2O molecules). 15. Rank the following forces in increasing intermolecular attraction: dipole-dipole, hydrogen-bond, electrostatic, ...
Accelerated Chemistry 6.2 Notes Teacher
... Whenever you are measuring a value, (such as the length of an object with a ruler), it must be recorded with the correct number of sig. figs. ALL the numbers of the measurement known for sure. Record ______ Record one last digit for the measurement that is estimated. (This reading in between the mea ...
... Whenever you are measuring a value, (such as the length of an object with a ruler), it must be recorded with the correct number of sig. figs. ALL the numbers of the measurement known for sure. Record ______ Record one last digit for the measurement that is estimated. (This reading in between the mea ...
2016
... Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and insure all students are on a relatively even plane. It will be important for everyone to come to class the first day prepared. While I review, extensive remediation is not an option a ...
... Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and insure all students are on a relatively even plane. It will be important for everyone to come to class the first day prepared. While I review, extensive remediation is not an option a ...
Chapter 2 PPT - Richsingiser.com
... empirical formula that uses the smallest whole number subscripts to express the relative numbers of ions. • The relative numbers of ions in the empirical formula balances the charges to zero. • The formula of sodium chloride is NaCl, because the 1+ ions have to be present in a 1:1 ...
... empirical formula that uses the smallest whole number subscripts to express the relative numbers of ions. • The relative numbers of ions in the empirical formula balances the charges to zero. • The formula of sodium chloride is NaCl, because the 1+ ions have to be present in a 1:1 ...
end of year review
... _____7. Two compounds that contain the elements carbon and chlorine are carbon tetrachloride (CCl4) and chloroform (CHCl3). Which of the following statements describes the geometry around carbon in these two compounds? A. CCl4 and CHCl3 have bent geometries. B. CCl4 and CHCl3 have tetrahedral geomet ...
... _____7. Two compounds that contain the elements carbon and chlorine are carbon tetrachloride (CCl4) and chloroform (CHCl3). Which of the following statements describes the geometry around carbon in these two compounds? A. CCl4 and CHCl3 have bent geometries. B. CCl4 and CHCl3 have tetrahedral geomet ...
The Chemistry of Global Warming
... since 120 years are short in comparison to the 4.5 billion history of the Earth. • Doubling CO2 levels will increase temperature by 1.0-3.5 °C , smaller than Arrhenius’s prediction of 5-6 in 1896. • Absorption of infrared radiation depends on molecular vibrations. ...
... since 120 years are short in comparison to the 4.5 billion history of the Earth. • Doubling CO2 levels will increase temperature by 1.0-3.5 °C , smaller than Arrhenius’s prediction of 5-6 in 1896. • Absorption of infrared radiation depends on molecular vibrations. ...
solution is a solution that contains the maximum amount of solute
... Instructions: The midterm consists of two sections (A, 36 points; B, 64 points). Answer each question in the space provided. Write your name at the top of the test in the space provided. Read each question carefully. There is a periodic table provided on the last page of the test. Including the peri ...
... Instructions: The midterm consists of two sections (A, 36 points; B, 64 points). Answer each question in the space provided. Write your name at the top of the test in the space provided. Read each question carefully. There is a periodic table provided on the last page of the test. Including the peri ...
MIME 4160
... because of a genuine emergency (such as illness, jury duty, funeral) then you should contact me by E-mail or in person and provide written documentation as soon as possible. Submit your assignment as soon as possible. In case you have to miss an exam I will decide if I will give you a make-up test o ...
... because of a genuine emergency (such as illness, jury duty, funeral) then you should contact me by E-mail or in person and provide written documentation as soon as possible. Submit your assignment as soon as possible. In case you have to miss an exam I will decide if I will give you a make-up test o ...
Electron - HCC Learning Web
... • A molecule consists of two or more atoms held together by covalent bonds • A single covalent bond, or single bond, is the sharing of one pair of valence electrons • A double covalent bond, or double bond, is the sharing of two pairs of valence electrons • Covalent bonds can form between atoms of ...
... • A molecule consists of two or more atoms held together by covalent bonds • A single covalent bond, or single bond, is the sharing of one pair of valence electrons • A double covalent bond, or double bond, is the sharing of two pairs of valence electrons • Covalent bonds can form between atoms of ...
EXAM 3
... A 5.000 g sample of a compound known to contain only the elements phosphorous and oxygen was analyzed and found to contain 2.182 g of phosphorous. Additional experiments indicate that this compound has a molecular weight of 283.9 g/mol. How many phosphorous atoms are present in each molecule of this ...
... A 5.000 g sample of a compound known to contain only the elements phosphorous and oxygen was analyzed and found to contain 2.182 g of phosphorous. Additional experiments indicate that this compound has a molecular weight of 283.9 g/mol. How many phosphorous atoms are present in each molecule of this ...
Chapter 3
... balanced chem eqn to determine how many mol of R2 is required to react completely with R1. Do you have enough R2? If not, R2 = limiting reactant = LR and R1 = reactant in excess = XS. • Always use the LR to solve the stoichiometric problem to find the amount of product formed. • Calculate the amount ...
... balanced chem eqn to determine how many mol of R2 is required to react completely with R1. Do you have enough R2? If not, R2 = limiting reactant = LR and R1 = reactant in excess = XS. • Always use the LR to solve the stoichiometric problem to find the amount of product formed. • Calculate the amount ...
CHEMICAL FORMULAE (ANSWERS) Molecule Empirical formula
... produced 1.60g CO2 and 0.819g H20. Calculate the empirical formula. Ans = C2H5 1.60 / 44.01 = 0.0364 moles CO2 = 0.0364 moles C; 0.819/18.02 = 0.0454 moles H20 = 2 x 0.0454 = 0.0908 moles H so C0.0364 H 0.0908 = CH2.5 = C2H5 (make whole number) b) Upon combustion, a 0.8009g sample of compound contai ...
... produced 1.60g CO2 and 0.819g H20. Calculate the empirical formula. Ans = C2H5 1.60 / 44.01 = 0.0364 moles CO2 = 0.0364 moles C; 0.819/18.02 = 0.0454 moles H20 = 2 x 0.0454 = 0.0908 moles H so C0.0364 H 0.0908 = CH2.5 = C2H5 (make whole number) b) Upon combustion, a 0.8009g sample of compound contai ...
Worksheet answers
... produced 1.60g CO2 and 0.819g H20. Calculate the empirical formula. Ans = C2H5 1.60 / 44.01 = 0.0364 moles CO2 = 0.0364 moles C; 0.819/18.02 = 0.0454 moles H20 = 2 x 0.0454 = 0.0908 moles H so C0.0364 H 0.0908 = CH2.5 = C2H5 (make whole number) b) Upon combustion, a 0.8009g sample of compound contai ...
... produced 1.60g CO2 and 0.819g H20. Calculate the empirical formula. Ans = C2H5 1.60 / 44.01 = 0.0364 moles CO2 = 0.0364 moles C; 0.819/18.02 = 0.0454 moles H20 = 2 x 0.0454 = 0.0908 moles H so C0.0364 H 0.0908 = CH2.5 = C2H5 (make whole number) b) Upon combustion, a 0.8009g sample of compound contai ...
Carbene Singlets, Triplets, and the Physics that
... while knowing a set of rules for writing them allows them to be consistent with experiments in cases where there are no extremely similar energy levels in the interaction diagram, they are not suitable for discerning numerical results. However, as will be shown in more detail later, these molecular ...
... while knowing a set of rules for writing them allows them to be consistent with experiments in cases where there are no extremely similar energy levels in the interaction diagram, they are not suitable for discerning numerical results. However, as will be shown in more detail later, these molecular ...