Chemical Formulas and Composition Stoichiometry
... • A compound contains 24.74% K, 34.76% Mn, and 40.50% O. What is the empirical formula of this compound? – Step 1: Consider how many grams of each element would be present in 100.0 grams. – Step 2: Convert to moles for each element. – Step 3: Obtain smallest whole-number ratio by dividing by the sma ...
... • A compound contains 24.74% K, 34.76% Mn, and 40.50% O. What is the empirical formula of this compound? – Step 1: Consider how many grams of each element would be present in 100.0 grams. – Step 2: Convert to moles for each element. – Step 3: Obtain smallest whole-number ratio by dividing by the sma ...
Unit 7: Chemical Equations & Reactions
... • Balance polyatomic ions as a unit (if possible). • Re-write H2O as H-OH if hydroxide is present 3. Balance the remaining atoms • End with the least-complex substance • Leave single elements/diatomic molecules until last 4. Double check - Make sure that the atoms of each element are the same on bot ...
... • Balance polyatomic ions as a unit (if possible). • Re-write H2O as H-OH if hydroxide is present 3. Balance the remaining atoms • End with the least-complex substance • Leave single elements/diatomic molecules until last 4. Double check - Make sure that the atoms of each element are the same on bot ...
Scientific Measurement
... an electron. _____25. I can state the relationship between the number of the principal energy level and the distance to the atom’s nucleus. _____26. I can identify an electron configuration that shows an atom in the excited state. ...
... an electron. _____25. I can state the relationship between the number of the principal energy level and the distance to the atom’s nucleus. _____26. I can identify an electron configuration that shows an atom in the excited state. ...
CHEM 13 NEWS EXAM 1998 - University of Waterloo
... pipe and connected to the iron. What is the best explanation for this protective action? A ...
... pipe and connected to the iron. What is the best explanation for this protective action? A ...
Preview Sample 2
... You also notice that the electrons in H2 are evenly distributed among the two atoms. Which two types of bonds are represented in these molecules? A. Covalent bonds in NaCl; ionic bonds in H2. B. Covalent bonds in NaCl; covalent bonds in H2. C. Ionic bonds in NaCl; ionic bonds in H2. D. Ionic bonds i ...
... You also notice that the electrons in H2 are evenly distributed among the two atoms. Which two types of bonds are represented in these molecules? A. Covalent bonds in NaCl; ionic bonds in H2. B. Covalent bonds in NaCl; covalent bonds in H2. C. Ionic bonds in NaCl; ionic bonds in H2. D. Ionic bonds i ...
Chemical Reactions
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element in o ...
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element in o ...
Dr. Audrey Lugo`s AP Chemistry Course Syllabus
... These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course to illustrate and illuminate the principles. The following areas should be covered: 1. Chemical reactivi ...
... These descriptive facts, including the chemistry involved in environmental and societal issues, should not be isolated from the principles being studied but should be taught throughout the course to illustrate and illuminate the principles. The following areas should be covered: 1. Chemical reactivi ...
Chapter 4 Lecture Slides
... more than one carbon atom. The octet rule requires that carbons will always have four pairs of shared electrons around them, therefore we can deduce the number of hydrogens that are bonded to each carbon in a skeletal structure. ...
... more than one carbon atom. The octet rule requires that carbons will always have four pairs of shared electrons around them, therefore we can deduce the number of hydrogens that are bonded to each carbon in a skeletal structure. ...
- Catalyst
... Law of Conservation of Mass The total mass of substances does not change during a chemical reaction – mass is neither created nor destroyed. ...
... Law of Conservation of Mass The total mass of substances does not change during a chemical reaction – mass is neither created nor destroyed. ...
Atoms and Atomic Theory
... In 1913, Niels Bohr improved upon the Rutherford model by stating that electrons travel the nucleus in a fixed orbit. At times, electrons can move from one energy level to another. Charge-Cloud Model With the emergence of Werner Heisenberg's Uncertainty Principle, which states that it is impossible ...
... In 1913, Niels Bohr improved upon the Rutherford model by stating that electrons travel the nucleus in a fixed orbit. At times, electrons can move from one energy level to another. Charge-Cloud Model With the emergence of Werner Heisenberg's Uncertainty Principle, which states that it is impossible ...
1st Semester Practice Test
... 47. What is the next atomic orbital in the series Is, 2s, 2p, 3s, 3p? a. 2d c. 3f b. 3d d. 4s 48. According to the aufbau principle, __. a. an orbital may be occupied by only two electrons b. electrons in the same orbital must have opposite spins c. electrons enter orbitals of highest ...
... 47. What is the next atomic orbital in the series Is, 2s, 2p, 3s, 3p? a. 2d c. 3f b. 3d d. 4s 48. According to the aufbau principle, __. a. an orbital may be occupied by only two electrons b. electrons in the same orbital must have opposite spins c. electrons enter orbitals of highest ...
Spring 2014
... 11. The orbital filling diagram for oxygen is shown on the right. What is the set of quantum numbers for the electron circled? a. ...
... 11. The orbital filling diagram for oxygen is shown on the right. What is the set of quantum numbers for the electron circled? a. ...
Stoichiometry
... an Avogadro’s number of softdrink cans would cover the surface of the earth to a depth of over 200 miles if we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count an Avogadro’s number of atoms ...
... an Avogadro’s number of softdrink cans would cover the surface of the earth to a depth of over 200 miles if we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count an Avogadro’s number of atoms ...
PHYSICAL SETTING CHEMISTRY
... 51 Draw a Lewis electron-dot diagram for an atom of silicon. [1] Base your answers to questions 52 through 54 on the information below. ...
... 51 Draw a Lewis electron-dot diagram for an atom of silicon. [1] Base your answers to questions 52 through 54 on the information below. ...
Chemistry 11 - Sardis Secondary
... b) How many grams of the EXCESS reactant will be left over after the reaction is complete? ...
... b) How many grams of the EXCESS reactant will be left over after the reaction is complete? ...
Chapter 1 (Matter and Measurement) Objectives
... Explain how to determine whether a molecule needs single, double, or triple bonds. Draw Lewis dot and Lewis structure diagrams of molecules including resonance structures Understand the concept of the co-ordinate bond related to Lewis structures Understand that ionic solids are held together in a la ...
... Explain how to determine whether a molecule needs single, double, or triple bonds. Draw Lewis dot and Lewis structure diagrams of molecules including resonance structures Understand the concept of the co-ordinate bond related to Lewis structures Understand that ionic solids are held together in a la ...
600 $600
... Which of these phase changes does not involve the absorption of heat energy? A.Boiling B. condensation C. melting D. vaporization ...
... Which of these phase changes does not involve the absorption of heat energy? A.Boiling B. condensation C. melting D. vaporization ...
Compounds & Moles
... hydrogen are called hydrocarbons Alkane – all carbons form single bonds Alkene – carbons form double bonds Alkyne – carbons form triple bonds Whether a compound is an alkane, alkene, or alkyne determines the suffix (ending) in the name of the ...
... hydrogen are called hydrocarbons Alkane – all carbons form single bonds Alkene – carbons form double bonds Alkyne – carbons form triple bonds Whether a compound is an alkane, alkene, or alkyne determines the suffix (ending) in the name of the ...
Wizard Test Maker
... conductor of electricity? A 3 A KCl B 7 B C6H12O6 C 8 C CO2 D 11 D CO 33. When ethylene glycol (an antifreeze) is added to water, what happens to the boiling point of the water? A It decreases, and the freezing point ...
... conductor of electricity? A 3 A KCl B 7 B C6H12O6 C 8 C CO2 D 11 D CO 33. When ethylene glycol (an antifreeze) is added to water, what happens to the boiling point of the water? A It decreases, and the freezing point ...
Atoms 1 ppt
... An “s” orbital is shaped like a sphere and can hold a maximum of 2 electrons. Each “p” orbital is shaped like a bar bell. There are 3 different types that can each hold 2 electrons. The “p” orbital, therefore, can hold up to 6 electrons. “d” and “f” orbitals are more complex. There are 5 types of “d ...
... An “s” orbital is shaped like a sphere and can hold a maximum of 2 electrons. Each “p” orbital is shaped like a bar bell. There are 3 different types that can each hold 2 electrons. The “p” orbital, therefore, can hold up to 6 electrons. “d” and “f” orbitals are more complex. There are 5 types of “d ...
Section 2: “The Structure of Atoms”
... An “s” orbital is shaped like a sphere and can hold a maximum of 2 electrons. Each “p” orbital is shaped like a bar bell. There are 3 different types that can each hold 2 electrons. The “p” orbital, therefore, can hold up to 6 electrons. “d” and “f” orbitals are more complex. There are 5 types of “d ...
... An “s” orbital is shaped like a sphere and can hold a maximum of 2 electrons. Each “p” orbital is shaped like a bar bell. There are 3 different types that can each hold 2 electrons. The “p” orbital, therefore, can hold up to 6 electrons. “d” and “f” orbitals are more complex. There are 5 types of “d ...
Electronic Structure and the Periodic Table
... Things get a bit more complex where more than one electron is involved. Effective nuclear charge(kernel charge) Inner electrons act to shield outer ones from the positive charge of the nucleus. Some orbitals penetrate to the nucleus more than others: s > p > d > f ...
... Things get a bit more complex where more than one electron is involved. Effective nuclear charge(kernel charge) Inner electrons act to shield outer ones from the positive charge of the nucleus. Some orbitals penetrate to the nucleus more than others: s > p > d > f ...
The chemical elements are fundamental building materials of matter
... • 1.A: All matter is made of atoms. There are a limited number of types of atoms: these are the elements. • 1.B: The atoms of each element have unique structures arising from interactions between electrons and nuclei. • 1.C: Elements display periodicity in their properties when the elements are orga ...
... • 1.A: All matter is made of atoms. There are a limited number of types of atoms: these are the elements. • 1.B: The atoms of each element have unique structures arising from interactions between electrons and nuclei. • 1.C: Elements display periodicity in their properties when the elements are orga ...