SCH4U - Unit 1
... Schrodinger (1924) postulated that sometimes electrons behave as particles, and sometimes like waves. Because of this we cannot measure both the position and velocity of an electron at the same time. This exclusion is referred to as the Pauli Exclusion Principle. What this really means is that we ca ...
... Schrodinger (1924) postulated that sometimes electrons behave as particles, and sometimes like waves. Because of this we cannot measure both the position and velocity of an electron at the same time. This exclusion is referred to as the Pauli Exclusion Principle. What this really means is that we ca ...
3 Principles of Structure and Symmetry
... The equations (3.12), (3.13) and (3.16) now allow us to construct a 3-dimensional depiction of the wave functions for n = 1, 2 and 3. Let’s begin with the spherical s-orbitals. 1s has no radial zero points, 2s has one, and 3s has two. We will depict a cross-section of the orbitals (for example z = 0 ...
... The equations (3.12), (3.13) and (3.16) now allow us to construct a 3-dimensional depiction of the wave functions for n = 1, 2 and 3. Let’s begin with the spherical s-orbitals. 1s has no radial zero points, 2s has one, and 3s has two. We will depict a cross-section of the orbitals (for example z = 0 ...
Chemistry Test Study Guide
... 21. A mixture is created when two pure substances are combined so that each of the pure substances retains its own properties. 22. Where is the majority of the mass of an atom located? In the nucleus.(Protons and Neutrons) 23. If an atom loses electron’s, will it have a positive or negative charge? ...
... 21. A mixture is created when two pure substances are combined so that each of the pure substances retains its own properties. 22. Where is the majority of the mass of an atom located? In the nucleus.(Protons and Neutrons) 23. If an atom loses electron’s, will it have a positive or negative charge? ...
Standards Practice
... B. hydrogen bond. C. ionic bond. D. metallic bond. 2. When atoms combine to form a molecule by sharing electrons, what type of bonds are formed? A. covalent B. hydrogen C. ionic D. polar ionic 3. Which is the best way to express the relationship between hydrogen and fluorine when they combine? ...
... B. hydrogen bond. C. ionic bond. D. metallic bond. 2. When atoms combine to form a molecule by sharing electrons, what type of bonds are formed? A. covalent B. hydrogen C. ionic D. polar ionic 3. Which is the best way to express the relationship between hydrogen and fluorine when they combine? ...
Energy Atoms and Elements Practice Problems
... 18) Which of the following is NOT a statement of Dalton's Atomic Theory. A) All matter is made up of tiny indestructable particles called atoms. B) Atoms are niether created or destroyed during a chemical reaction, just rearranged. C) All atoms of a given element are identical and atoms of different ...
... 18) Which of the following is NOT a statement of Dalton's Atomic Theory. A) All matter is made up of tiny indestructable particles called atoms. B) Atoms are niether created or destroyed during a chemical reaction, just rearranged. C) All atoms of a given element are identical and atoms of different ...
What You Need to Know to Pass the Chemistry
... 2. A mixture is composed of two or more different substances that may be physically separated. A mixture may be homogeneous (uniform – a solution), or heterogeneous (uneven). Substances in a mixture retain their original properties. Substances in a mixture may be separated by their size, pola ...
... 2. A mixture is composed of two or more different substances that may be physically separated. A mixture may be homogeneous (uniform – a solution), or heterogeneous (uneven). Substances in a mixture retain their original properties. Substances in a mixture may be separated by their size, pola ...
Summer Assignment
... We are very excited to have so many promising students sign-up for AP Chemistry. Often called the “central science”, chemistry is truly the best class you will ever take in high school. Our goal is to prepare you for the AP exam, for college chemistry and for life as an informed member of our republ ...
... We are very excited to have so many promising students sign-up for AP Chemistry. Often called the “central science”, chemistry is truly the best class you will ever take in high school. Our goal is to prepare you for the AP exam, for college chemistry and for life as an informed member of our republ ...
ppt
... Most of the mass of an atom is in the small, dense nucleus. ● The radius of an atom is about 100,000 times larger than the radius of the nucleus. ● Electrons are located around the nucleus in orbitals. ● Orbitals – not distinct like planetary orbits, but 3-D regions where electrons can probably be ...
... Most of the mass of an atom is in the small, dense nucleus. ● The radius of an atom is about 100,000 times larger than the radius of the nucleus. ● Electrons are located around the nucleus in orbitals. ● Orbitals – not distinct like planetary orbits, but 3-D regions where electrons can probably be ...
Name: Period:______ PHYSICAL SCIENCE 1st Semester Final
... According to Rutherford’s model, all of an atom’s positive charge is located in its nucleus. Protons, electrons, and neutrons can be distinguished by mass, charge, and location in an atom. Isotopes of an element have the same atomic number but different mass numbers because they have different ...
... According to Rutherford’s model, all of an atom’s positive charge is located in its nucleus. Protons, electrons, and neutrons can be distinguished by mass, charge, and location in an atom. Isotopes of an element have the same atomic number but different mass numbers because they have different ...
First of all, do you know any methods to check
... Auger electrons can be generated by any energetic particles, which are able to and excite electrons and leave holes, such as X-Ray irradiation, ion-beam bombardment and electron beam irradiation. In the sense of AES, it is excited by electrons. Electrons interaction with surface brings: •X-rays (bot ...
... Auger electrons can be generated by any energetic particles, which are able to and excite electrons and leave holes, such as X-Ray irradiation, ion-beam bombardment and electron beam irradiation. In the sense of AES, it is excited by electrons. Electrons interaction with surface brings: •X-rays (bot ...
Unit B: Matter and Chemical Change
... first orbital and has room to gain 1 more electron if it comes in contact with another atom. This would then completely fill the first orbital. Nitrogen’s atom has the atomic number of 7 and thus contains 7 electrons. Two of the seven electrons fill the first orbital and the remaining five occupy th ...
... first orbital and has room to gain 1 more electron if it comes in contact with another atom. This would then completely fill the first orbital. Nitrogen’s atom has the atomic number of 7 and thus contains 7 electrons. Two of the seven electrons fill the first orbital and the remaining five occupy th ...
R E V I E W -- P R A C T I C E E X A
... a. increasing atomic radii, decreasing ionization energies and electronegativity values b. decreasing atomic radii, ionization energies and electronegativity values c. decreasing atomic radii, increasing ionization energy, decreasing electronegativity values d. increasing atomic radii, increasing io ...
... a. increasing atomic radii, decreasing ionization energies and electronegativity values b. decreasing atomic radii, ionization energies and electronegativity values c. decreasing atomic radii, increasing ionization energy, decreasing electronegativity values d. increasing atomic radii, increasing io ...
CVB101 – Lecture 3 Chemical Bonding • Chemical bonding
... Chemical properties, most importantly, chemical reactivity is determined by the electrons, more precisely, electronic structure (number of eincluding their distribution around nucleus and their energies) – explained by quantum theory Electron subshells S subshell has 2 electrons P subshell has ...
... Chemical properties, most importantly, chemical reactivity is determined by the electrons, more precisely, electronic structure (number of eincluding their distribution around nucleus and their energies) – explained by quantum theory Electron subshells S subshell has 2 electrons P subshell has ...
word doc (perfect formatting)
... 4) Represents an atom of an alkali earth metal Questions 5-8 refer to the following descriptions of bonding in different types of solids. a) Lattice of positive and negative ions held together by electrostatic forces b) Closely packed lattice with delocalized electrons throughout giving ability to c ...
... 4) Represents an atom of an alkali earth metal Questions 5-8 refer to the following descriptions of bonding in different types of solids. a) Lattice of positive and negative ions held together by electrostatic forces b) Closely packed lattice with delocalized electrons throughout giving ability to c ...
Chemistry Definitions
... Orbital: The cloud shapes that electron pairs travel around the nucleus in the quantum mechanical model. Aufbau principle: Electrons enter orbitals of lowest energy first. Pauli exclusion principle: An atomic orbital may describe at most two electrons. Hunds rule: When electrons occupy orbitals of e ...
... Orbital: The cloud shapes that electron pairs travel around the nucleus in the quantum mechanical model. Aufbau principle: Electrons enter orbitals of lowest energy first. Pauli exclusion principle: An atomic orbital may describe at most two electrons. Hunds rule: When electrons occupy orbitals of e ...
MULTIPLE CHOICE. Choose the one alternative that best completes
... 72) The hydrogen bonding that occurs in water is responsible for all of the following, except A) the low freezing point of water. B) the ability of water to dissolve nonpolar substances. C) the surface tension of water. D) the high boiling point of water. E) the ability of water to dissolve inorgan ...
... 72) The hydrogen bonding that occurs in water is responsible for all of the following, except A) the low freezing point of water. B) the ability of water to dissolve nonpolar substances. C) the surface tension of water. D) the high boiling point of water. E) the ability of water to dissolve inorgan ...
Solutions - Dynamic Science
... Atom “Y” will give one electron away. Atom “Y” will take one electron away. Atom “Y” will share one electron with another atom. Atom “Y” will share two electrons with another atom. ...
... Atom “Y” will give one electron away. Atom “Y” will take one electron away. Atom “Y” will share one electron with another atom. Atom “Y” will share two electrons with another atom. ...
Name - Quia
... Explain how periodic law can be used to predict physical and chemical properties Describe how elements belonging to a group are interrelated Locate and name the four blocks of the periodic table Discuss the relationship between group configurations and group numbers Describe the locations in the per ...
... Explain how periodic law can be used to predict physical and chemical properties Describe how elements belonging to a group are interrelated Locate and name the four blocks of the periodic table Discuss the relationship between group configurations and group numbers Describe the locations in the per ...
Molecular orbital diagram
A molecular orbital diagram, or MO diagram, is a qualitative descriptive tool explaining chemical bonding in molecules in terms of molecular orbital theory in general and the linear combination of atomic orbitals (LCAO) molecular orbital method in particular. A fundamental principle of these theories is that as atoms bond to form molecules, a certain number of atomic orbitals combine to form the same number of molecular orbitals, although the electrons involved may be redistributed among the orbitals. This tool is very well suited for simple diatomic molecules such as dihydrogen, dioxygen, and carbon monoxide but becomes more complex when discussing even comparatively simple polyatomic molecules, such as methane. MO diagrams can explain why some molecules exist and others do not. They can also predict bond strength, as well as the electronic transitions that can take place.