The Atom
... alphabet to the language of molecules. To make molecules, you must have elements. Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way. ...
... alphabet to the language of molecules. To make molecules, you must have elements. Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way. ...
Review Sheet
... Rutherford’s planetary model of the atom faced a major problem. Classical physics predicted that the electron, as it circled the nucleus, would ________ energy so eventually the atom would collapse! Bohr placed e- in _________ levels, assuming that the electron won’t lose energy as long as it stays ...
... Rutherford’s planetary model of the atom faced a major problem. Classical physics predicted that the electron, as it circled the nucleus, would ________ energy so eventually the atom would collapse! Bohr placed e- in _________ levels, assuming that the electron won’t lose energy as long as it stays ...
RATN Pg 84-89 Rutherford 1909 Gold foil experiment Shot streams
... Most passed through but some particles were bounced ...
... Most passed through but some particles were bounced ...
FE Review Chemistry - UTSA College of Engineering
... c) Both elements and compounds are composed of atoms d) All substances contain atoms e) substances are always homogeneous 2. Which statement is incorrect? a) An element may be separated into atoms b) An element may be a gas, a liquid, or a solid c) A compound can be separated into its elements by ch ...
... c) Both elements and compounds are composed of atoms d) All substances contain atoms e) substances are always homogeneous 2. Which statement is incorrect? a) An element may be separated into atoms b) An element may be a gas, a liquid, or a solid c) A compound can be separated into its elements by ch ...
Chemistry in Focus 3rd edition Tro
... protons and electrons hold electrons within a spherical region surrounding the nucleus. • Atoms can lose and gain one or more electrons. ...
... protons and electrons hold electrons within a spherical region surrounding the nucleus. • Atoms can lose and gain one or more electrons. ...
Lesson 1_lesson2
... Chemical reactivity of the elements. • Whereas the unreactive nature of the noble gases delayed their discovery, for other elements such as gold the very same reason has meant that thi metal has been known and used since 6000 BC • Read 2.2 Jacaranda and do questions on page 48 • Look at http://www. ...
... Chemical reactivity of the elements. • Whereas the unreactive nature of the noble gases delayed their discovery, for other elements such as gold the very same reason has meant that thi metal has been known and used since 6000 BC • Read 2.2 Jacaranda and do questions on page 48 • Look at http://www. ...
File - Ricci Math and Science
... 37. Observe the atomic radii of the group 1 elements (Li, Na, K, Rb and Cs) on the graph. Which statement best describes the trend in atomic radii as you move down group? A. B. C. D. ...
... 37. Observe the atomic radii of the group 1 elements (Li, Na, K, Rb and Cs) on the graph. Which statement best describes the trend in atomic radii as you move down group? A. B. C. D. ...
Study Guide for Quiz on Tuesday February 26th - seys
... Element- a substance that cannot be broken down into a simpler substance by ordinary chemical change changes, consists of atoms of only one type Chemical formula- an expression that shows the numbers and types of atoms joined in a compound (H2O) Compound- two different types of atoms bonded together ...
... Element- a substance that cannot be broken down into a simpler substance by ordinary chemical change changes, consists of atoms of only one type Chemical formula- an expression that shows the numbers and types of atoms joined in a compound (H2O) Compound- two different types of atoms bonded together ...
The Periodic Table - Mr Linseman`s wiki
... - Protons ________ - Neutrons ________ - Electrons ________ Protons and neutrons are found in the centre of the atom – also known as the nucleus. Electrons are found orbiting the nucleus in shells. Label the following diagram of the atom: e ...
... - Protons ________ - Neutrons ________ - Electrons ________ Protons and neutrons are found in the centre of the atom – also known as the nucleus. Electrons are found orbiting the nucleus in shells. Label the following diagram of the atom: e ...
Element Symbol Number of Protons Number of electrons Number of
... 5. Given the relative abundance of the following naturally occurring isotopes of oxygen, calculate the average atomic mass of oxygen. Assume that the atomic mass of each is the same as the mass number. oxygen- 16: 99.76% oxygen17: 0.037% oxygen-18: 0.204% ...
... 5. Given the relative abundance of the following naturally occurring isotopes of oxygen, calculate the average atomic mass of oxygen. Assume that the atomic mass of each is the same as the mass number. oxygen- 16: 99.76% oxygen17: 0.037% oxygen-18: 0.204% ...
HISTORY OF THE PERIODIC TABLE
... IV Cannizaro – determined atomic weights for 60 or so elements V John Newlands – arranged the table with the elements given a serial number in order of atomic weight - made evident “eighth element, starting from a given one, is a kind of repetition of the first” (Law of Octaves) ...
... IV Cannizaro – determined atomic weights for 60 or so elements V John Newlands – arranged the table with the elements given a serial number in order of atomic weight - made evident “eighth element, starting from a given one, is a kind of repetition of the first” (Law of Octaves) ...
What does the Periodic Table tell us?
... What happens if we don’t have the same number of p+ and e-? Then we no longer have a __________________ atom. o Neutral atoms have _________ CHARGE o They have the same number of ________________ particles as _________________ particles. (these ...
... What happens if we don’t have the same number of p+ and e-? Then we no longer have a __________________ atom. o Neutral atoms have _________ CHARGE o They have the same number of ________________ particles as _________________ particles. (these ...
chemistry 1000 - U of L Class Index
... Most electrons do not ‘feel’ the full positive charge of the nucleus. Other electrons in the atom (particularly those in lower energy orbitals) ‘shield’ some of this charge. The amount of positive charge ‘felt’ by an electron in a given orbital is called the effective nuclear charge (Z eff ). The fo ...
... Most electrons do not ‘feel’ the full positive charge of the nucleus. Other electrons in the atom (particularly those in lower energy orbitals) ‘shield’ some of this charge. The amount of positive charge ‘felt’ by an electron in a given orbital is called the effective nuclear charge (Z eff ). The fo ...
bohrmodelofatomclassnote0
... The shells hold the same number of electrons as there are elements in each period (row): 2 – 8 – 8 – 18 electrons Atomic Notation and Drawing Bohr and Lewis Diagrams: Atomic Notation: The mass number of an element tells us the protons and neutrons – these particles both weigh 1 atomic mass unit ...
... The shells hold the same number of electrons as there are elements in each period (row): 2 – 8 – 8 – 18 electrons Atomic Notation and Drawing Bohr and Lewis Diagrams: Atomic Notation: The mass number of an element tells us the protons and neutrons – these particles both weigh 1 atomic mass unit ...
Unit 4
... The resources included here provide teaching examples and/or meaningful learning experiences to address the District Curriculum. In order to address the TEKS to the proper depth and complexity, teachers are encouraged to use resources to the degree that they are congruent with the TEKS and researc ...
... The resources included here provide teaching examples and/or meaningful learning experiences to address the District Curriculum. In order to address the TEKS to the proper depth and complexity, teachers are encouraged to use resources to the degree that they are congruent with the TEKS and researc ...
Periodic Trends
... Electronegativity: the propensity for an element to attract efrom another atom. It’s ability to bond. Ionization energy:: the amount of energy required to pull one eaway from an element; to remove one electron. ...
... Electronegativity: the propensity for an element to attract efrom another atom. It’s ability to bond. Ionization energy:: the amount of energy required to pull one eaway from an element; to remove one electron. ...
Lecture slides - e
... system is more stable. The energy saved by moving to a more stable situation is released as heat. For this reason bond formation is always exothermic, i.e. heat energy is released. ...
... system is more stable. The energy saved by moving to a more stable situation is released as heat. For this reason bond formation is always exothermic, i.e. heat energy is released. ...
Study Guide for test - Madison County Schools
... b. How do electrons move around the atom in Bohr’s model? What is the # sequence for his model? c. What new concept about energy did Bohr’s model include? d. What evidence did Bohr have to support his ideas about electrons and energy? 6) Erwin Schrödinger & Werner Heisenberg a. How does the electron ...
... b. How do electrons move around the atom in Bohr’s model? What is the # sequence for his model? c. What new concept about energy did Bohr’s model include? d. What evidence did Bohr have to support his ideas about electrons and energy? 6) Erwin Schrödinger & Werner Heisenberg a. How does the electron ...
Fall Semester Review Packet
... variable and a control. Describe how these variables relate to one another during an experiment. 12. Explain the difference between accuracy and precision when describing scientific measurements. 13. Explain how atoms of the same element may differ. Include all of the following terms in your explana ...
... variable and a control. Describe how these variables relate to one another during an experiment. 12. Explain the difference between accuracy and precision when describing scientific measurements. 13. Explain how atoms of the same element may differ. Include all of the following terms in your explana ...
Honors Midterm Review – 2015-16
... _________ responsible for the uncertainty principle which states that it is impossible to know (with any great degree of certainty) both the location and velocity of an electron) _________ responsible for the planetary model of the atom, where electrons traveled in distinct paths around the nucleus ...
... _________ responsible for the uncertainty principle which states that it is impossible to know (with any great degree of certainty) both the location and velocity of an electron) _________ responsible for the planetary model of the atom, where electrons traveled in distinct paths around the nucleus ...