Chapter 1 Vocabulary
... 14.Molecular Orbital (MO) Theory – A description of covalent bond formation as resulting from a mathematical combination of atomic orbitals (wave functions) to from molecular orbitals. 15.Molecule – A neutral collection of atoms held together by covalent bonds. 16.Node – A surface of zero electron d ...
... 14.Molecular Orbital (MO) Theory – A description of covalent bond formation as resulting from a mathematical combination of atomic orbitals (wave functions) to from molecular orbitals. 15.Molecule – A neutral collection of atoms held together by covalent bonds. 16.Node – A surface of zero electron d ...
Unit 2 -- Atomic Structure, Periodic Table, and
... • Divides metals from nonmetals • properties intermediate between metals and nonmetals • Ex: Si, Ge, ... • “stair case” on right Side of periodic table ...
... • Divides metals from nonmetals • properties intermediate between metals and nonmetals • Ex: Si, Ge, ... • “stair case” on right Side of periodic table ...
Chapters 1-4 Numbers and Measurements in Chemistry Units SI
... Protons – found in the nucleus; positive charge equal in magnitude ag ude to o the ...
... Protons – found in the nucleus; positive charge equal in magnitude ag ude to o the ...
atoms
... • What is a theory in science? • A theory is a well-tested explanation of what happens in nature. • In layman’s terms, if something is said to be “just a theory,” it usually means that it is a mere guess, or is unproven. But in scientific terms, a theory implies that something has been well-tested a ...
... • What is a theory in science? • A theory is a well-tested explanation of what happens in nature. • In layman’s terms, if something is said to be “just a theory,” it usually means that it is a mere guess, or is unproven. But in scientific terms, a theory implies that something has been well-tested a ...
Atomic Theory Practice Test
... a. polar covalent. c. nonpolar covalent. b. ionic. d. metallic ____ 23. All of the following are true statements about a molecule EXCEPT a. it is capable of existing on its own. b. it may consist of two or more atoms of the same type. c. exist as a crystal lattice. d. it may consist of two or more a ...
... a. polar covalent. c. nonpolar covalent. b. ionic. d. metallic ____ 23. All of the following are true statements about a molecule EXCEPT a. it is capable of existing on its own. b. it may consist of two or more atoms of the same type. c. exist as a crystal lattice. d. it may consist of two or more a ...
CP Chemistry Final Exam Review Sheet
... 50. What is the octet rule? The octet rule states that atoms will gain, lose, or share electrons in order to get a full octet (8 e-) in the valence (outermost) shell of an atom. 51. An ion is a particle with an electrical charge created by the transfer (loss or gaining) of electrons. 52. What is a c ...
... 50. What is the octet rule? The octet rule states that atoms will gain, lose, or share electrons in order to get a full octet (8 e-) in the valence (outermost) shell of an atom. 51. An ion is a particle with an electrical charge created by the transfer (loss or gaining) of electrons. 52. What is a c ...
Notes without questions - Department of Physics and Astronomy
... sugar molecule in its excited state (potential energy) until you release the energy via digestion, allowing the electron to “drop back” to a lower orbit (kinetic/chemical/heat energy) ...
... sugar molecule in its excited state (potential energy) until you release the energy via digestion, allowing the electron to “drop back” to a lower orbit (kinetic/chemical/heat energy) ...
effective nuclear charge
... ◦ in general, the increase in mass is greater than the increase in volume ...
... ◦ in general, the increase in mass is greater than the increase in volume ...
Note taker: ATOMS AND THE PERIODIC TABLE
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
Note taker: ATOMS AND THE PERIODIC TABLE
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
2 C Atomic Number Mass Number Atomic Mass and Isotopes
... Atoms have no overall electrical charge so, an atom must have as many electrons as there are ...
... Atoms have no overall electrical charge so, an atom must have as many electrons as there are ...
Unit III * Introduction to Atomic Theory
... • Element X has two naturally occurring isotopes. The isotope with a mass of 10.012 amu has a relative abundance of 19.91%. The isotope with a mass of 11.009 amu has a relative abundance of 80.09%. Calculate the atomic mass of element X. ...
... • Element X has two naturally occurring isotopes. The isotope with a mass of 10.012 amu has a relative abundance of 19.91%. The isotope with a mass of 11.009 amu has a relative abundance of 80.09%. Calculate the atomic mass of element X. ...
Notes: ATOMS AND THE PERIODIC TABLE Atomic Structure: • : the
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
... •Atoms are composed of a positively charged nucleus surrounded by an electron cloud. –________________ (99% of atom’s mass): uncharged neutrons and positively charged protons. –______________________________: negatively charged electrons in constant motion creating a “cloud” like a fan. ...
Unit III Answers
... 11. Electron shielding is not a factor in a periodic trend because all of the atoms have the same core of electrons giving the same amount of shielding. Pgs 150-154 19. Hydrogen has only one proton and one electron. It reacts in many special ways that does not match very well with other elements. 20 ...
... 11. Electron shielding is not a factor in a periodic trend because all of the atoms have the same core of electrons giving the same amount of shielding. Pgs 150-154 19. Hydrogen has only one proton and one electron. It reacts in many special ways that does not match very well with other elements. 20 ...
Unit III Answers Pg 99 1. Bohr`s model proposed that the electrons
... 11. Electron shielding is not a factor in a periodic trend because all of the atoms have the same core of electrons giving the same amount of shielding. Pgs 150-154 19. Hydrogen has only one proton and one electron. It reacts in many special ways that does not match very well with other elements. 20 ...
... 11. Electron shielding is not a factor in a periodic trend because all of the atoms have the same core of electrons giving the same amount of shielding. Pgs 150-154 19. Hydrogen has only one proton and one electron. It reacts in many special ways that does not match very well with other elements. 20 ...
Objectives: early history, laws for calculations, atoms, molecules
... Electroneutrality condition: In an ionic compound the total charge of all ions together must be 0. ...
... Electroneutrality condition: In an ionic compound the total charge of all ions together must be 0. ...
Chapter 2: Matter is Made up of Atoms
... Electrons in Energy Levels • Atoms are arranged in energy levels (e.l.’s), at different distances from nucleus • Close to nucleus = low energy • Far from nucleus = high energy • e-s in highest occupied level are “valence e-s” • Only so many e-’s can fit in energy levels • e-s fill lower e.l.’s befo ...
... Electrons in Energy Levels • Atoms are arranged in energy levels (e.l.’s), at different distances from nucleus • Close to nucleus = low energy • Far from nucleus = high energy • e-s in highest occupied level are “valence e-s” • Only so many e-’s can fit in energy levels • e-s fill lower e.l.’s befo ...
Chapter 2 Chemical context of Life
... An orbital is a three-dimensional space where the electron is found 90% of the time. An orbital contains a maximum of two electrons. Electrons in orbitals with similar energies occupy the same principal energy level. The orbitals of an energy level are designated by the letters s, p, d and f. See fi ...
... An orbital is a three-dimensional space where the electron is found 90% of the time. An orbital contains a maximum of two electrons. Electrons in orbitals with similar energies occupy the same principal energy level. The orbitals of an energy level are designated by the letters s, p, d and f. See fi ...
history of atomic theory (ending with Dalton)
... • Atoms of different elements have different masses and properties. • Atoms only combine in small, whole number ratios such as 1:1, 1:2, 2:3, etc. • Chemical reactions are the rearrangements of atoms. • Atoms are neither created nor destroyed in chemical reactions. ...
... • Atoms of different elements have different masses and properties. • Atoms only combine in small, whole number ratios such as 1:1, 1:2, 2:3, etc. • Chemical reactions are the rearrangements of atoms. • Atoms are neither created nor destroyed in chemical reactions. ...
CHEMISTRY: MIDTERM EXAM REVIEW SPRING 2013 Multiple
... ____ 26. Emission of light from an atom occurs when an electron ____. a. falls into the nucleus b. moves within its atomic orbital c. jumps from a lower to a higher energy level d. drops from a higher to a lower energy level ____ 27. What must be done to be certain that a chemical change has taken ...
... ____ 26. Emission of light from an atom occurs when an electron ____. a. falls into the nucleus b. moves within its atomic orbital c. jumps from a lower to a higher energy level d. drops from a higher to a lower energy level ____ 27. What must be done to be certain that a chemical change has taken ...
Atoms, Molecules, and Ions
... are identical having the same mass, size, and chemical properties; however, the atoms of differing elements are different. 2)-Compounds are composed of atoms of more than one element and in any compound the ratio of the number of atoms of any two elements present is an integer or simple fraction. 3) ...
... are identical having the same mass, size, and chemical properties; however, the atoms of differing elements are different. 2)-Compounds are composed of atoms of more than one element and in any compound the ratio of the number of atoms of any two elements present is an integer or simple fraction. 3) ...
Note taker: ATOMS AND THE PERIODIC TABLE
... Electrons move in patterns of “_______________________________” around the nucleus. ...
... Electrons move in patterns of “_______________________________” around the nucleus. ...