Key Concepts
... 15. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 16. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 17. Electrons emit energy as light when they jump from higher energy levels back down to ...
... 15. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 16. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 17. Electrons emit energy as light when they jump from higher energy levels back down to ...
Notes -- Unit 3 -- Periodicity
... • Abbreviation is Eea, it has units of kJ/mol. Values are generally negative because energy is released. • Value of Eea results from interplay of nucleus electron attraction, and electron–electron repulsion. ...
... • Abbreviation is Eea, it has units of kJ/mol. Values are generally negative because energy is released. • Value of Eea results from interplay of nucleus electron attraction, and electron–electron repulsion. ...
honors_chapter_4
... All elements are composed of tiny indivisible particles called atoms Atoms of the same element are identical. The atoms of any one element are different from those of any ...
... All elements are composed of tiny indivisible particles called atoms Atoms of the same element are identical. The atoms of any one element are different from those of any ...
In 1808, Dalton proposed the first "modern" atomic theory
... that atoms can gain electric charges and form charged atoms called ions - In this modified version of Dalton’s model, he said: 1) Matter must contain positive and negative charges. 2) Opposite charges attract, and like ...
... that atoms can gain electric charges and form charged atoms called ions - In this modified version of Dalton’s model, he said: 1) Matter must contain positive and negative charges. 2) Opposite charges attract, and like ...
Chapter 4 Atomic Structure
... identical. Atoms of any one element are different from those of any other element. ...
... identical. Atoms of any one element are different from those of any other element. ...
Chapter 4 Atomic Structure
... identical. Atoms of any one element are different from those of any other element. ...
... identical. Atoms of any one element are different from those of any other element. ...
Ch. 7 Sections 7.10 and 7.12 Note Organizer
... I1 is the _______________ ionization energy and for aluminum, this electron comes from the 3p orbital ([Ne]3s23p1). I2 is the ______________ ionization energy and this electron comes from the 3s orbital. Why is I1 _________________ than I2? The first electron is removed from a ______________ atom an ...
... I1 is the _______________ ionization energy and for aluminum, this electron comes from the 3p orbital ([Ne]3s23p1). I2 is the ______________ ionization energy and this electron comes from the 3s orbital. Why is I1 _________________ than I2? The first electron is removed from a ______________ atom an ...
atoms - Harjono
... identical. Atoms of any one element are different from those of any other element. ...
... identical. Atoms of any one element are different from those of any other element. ...
atoms - Chemistry
... identical. Atoms of any one element are different from those of any other element. ...
... identical. Atoms of any one element are different from those of any other element. ...
Atomic structure
... Scientists had learned a lot about the atom, but couldn’t figure out what made it so heavy. In 1932 James Chadwick solved the mystery by coming up with the idea of neutrons, neutral particles that live in the nucleus with protons. The new improved Bohr model includes these particles. ...
... Scientists had learned a lot about the atom, but couldn’t figure out what made it so heavy. In 1932 James Chadwick solved the mystery by coming up with the idea of neutrons, neutral particles that live in the nucleus with protons. The new improved Bohr model includes these particles. ...
Cornell Notes 6
... •Protons give atoms their IDENTITY. In other words, if you have an atom with one proton, it HAS to be a Hydrogen atom. Two protons means it HAS to be a Helium atom and so on. •This means all atoms of the same element have the same number of protons •Electrons give atoms their PROPERTIES (except for ...
... •Protons give atoms their IDENTITY. In other words, if you have an atom with one proton, it HAS to be a Hydrogen atom. Two protons means it HAS to be a Helium atom and so on. •This means all atoms of the same element have the same number of protons •Electrons give atoms their PROPERTIES (except for ...
Atomic Structure - Mr. Cervantes Science Classes
... weighted average of the masses of all the isotopes of that element 1. When calculating the average atomic mass you must take into account the relative abundance of each isotope ...
... weighted average of the masses of all the isotopes of that element 1. When calculating the average atomic mass you must take into account the relative abundance of each isotope ...
Name - TeacherWeb
... 5. The close match between Mendeleev’s predictions and the actual properties of new elements showed the usefulness of this table. 6. True or false? In the modern periodic table, elements are arranged by increasing number of protons. True, by atomic number (number of protons). 7. Explain why the numb ...
... 5. The close match between Mendeleev’s predictions and the actual properties of new elements showed the usefulness of this table. 6. True or false? In the modern periodic table, elements are arranged by increasing number of protons. True, by atomic number (number of protons). 7. Explain why the numb ...
Atomic Structure DEMOCRITUS JOHN DALTON
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius Moseley created the modern periodic table when he determined that elements should be placed in order of increasing atomic number (# of protons). It’s a shame that WWI t ...
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius Moseley created the modern periodic table when he determined that elements should be placed in order of increasing atomic number (# of protons). It’s a shame that WWI t ...
Page 1 of 3 Chapter 2 Essential Chemistry CONTENT I. Basic
... electrons based on their electronegativity and receive a name based on polarity: a. Nonpolar covalent bond, equal sharing (example, hydrogen gas: H - H) b. Polar covalent bond: unequal sharing (examples, water molecule: H-O-H). 2) Ionic bonds- electrons are lost or gained (example, table salt: sodiu ...
... electrons based on their electronegativity and receive a name based on polarity: a. Nonpolar covalent bond, equal sharing (example, hydrogen gas: H - H) b. Polar covalent bond: unequal sharing (examples, water molecule: H-O-H). 2) Ionic bonds- electrons are lost or gained (example, table salt: sodiu ...
Chapter 3
... When connected to electric current the remaining the gas forms a BEAM OF LIGHT. The beam always started at the NEGATIVE electrode and flowed to the POSITIVE electrode. The electrode is named by what type of particle it ...
... When connected to electric current the remaining the gas forms a BEAM OF LIGHT. The beam always started at the NEGATIVE electrode and flowed to the POSITIVE electrode. The electrode is named by what type of particle it ...
Atomic Theory
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius ...
... __________ _________, similarities in their properties occur in a regular pattern. a) Atomic mass b) Atomic number c) Atomic radius ...
Periodic Trends
... • This is the second important periodic trend. • If an electron is given enough energy (in the form of a photon) to overcome the effective nuclear charge holding the electron in the cloud, it can leave the atom completely. • The atom has been “ionized” or charged. • The number of protons and ele ...
... • This is the second important periodic trend. • If an electron is given enough energy (in the form of a photon) to overcome the effective nuclear charge holding the electron in the cloud, it can leave the atom completely. • The atom has been “ionized” or charged. • The number of protons and ele ...
File
... matter. In other words you could cut an element in half forever & still have a piece of that element. ◦ Democritus challenged Aristotle on this last point saying that there were particles called atoms that were indivisible. (Aristotle was in the in crowd so no one listened to Democritus and set back ...
... matter. In other words you could cut an element in half forever & still have a piece of that element. ◦ Democritus challenged Aristotle on this last point saying that there were particles called atoms that were indivisible. (Aristotle was in the in crowd so no one listened to Democritus and set back ...
Subatomic Particles - Parkway C-2
... Atoms with same # Protons, but different # neutrons Example– 35Cl and 37Cl are isotopes of chlorine They only differ in their….. Mass! They both have how many protons….? ...
... Atoms with same # Protons, but different # neutrons Example– 35Cl and 37Cl are isotopes of chlorine They only differ in their….. Mass! They both have how many protons….? ...
File
... The normal atom (also called a stable atom) has three main parts (or particles) that we are concerned with; protons, neutrons, and electrons. A fourth part, the nucleus, is often referred to but we are not focusing on it as much as we are on protons, neutrons, and electrons. The nucleus is the centr ...
... The normal atom (also called a stable atom) has three main parts (or particles) that we are concerned with; protons, neutrons, and electrons. A fourth part, the nucleus, is often referred to but we are not focusing on it as much as we are on protons, neutrons, and electrons. The nucleus is the centr ...
The Periodic Table
... (hint: look in the fourth and the sixth periods ) 6. Name three elements which are found in more than one form. _____ _____ _____ 7. Name two metals which are not silver in colour. ___________ ___________ 8. Which element is used in the manufacture of light bulbs? __________ 9. Which is the only liq ...
... (hint: look in the fourth and the sixth periods ) 6. Name three elements which are found in more than one form. _____ _____ _____ 7. Name two metals which are not silver in colour. ___________ ___________ 8. Which element is used in the manufacture of light bulbs? __________ 9. Which is the only liq ...