Electrons #2
... When an electron joins an atom and has to choose between two or more orbitals of the same energy, the electron will prefer to enter an empty orbital rather than one already occupied. As more electrons are added to the atom, electrons will half-fill orbitals of the same energy before pairing with ...
... When an electron joins an atom and has to choose between two or more orbitals of the same energy, the electron will prefer to enter an empty orbital rather than one already occupied. As more electrons are added to the atom, electrons will half-fill orbitals of the same energy before pairing with ...
CHM_101_ASSIGNMENT_COPY_1_2
... c) Factors affecting Ionization Energy 1. Distance of outermost electron from the nucleus: Across the period, as atomic number increases, atomic radius decreases. As the distance decreases, the ...
... c) Factors affecting Ionization Energy 1. Distance of outermost electron from the nucleus: Across the period, as atomic number increases, atomic radius decreases. As the distance decreases, the ...
Name________________________ Midterm Review Date
... nucleus has a negative charge. B) An atom has hardly any empty space, and the nucleus has a negative charge. C) An atom is mainly empty space, and the nucleus has a positive charge. D) An atom has hardly any empty space, and the nucleus has a positive charge. 18. Which element is an alkali metal? A) ...
... nucleus has a negative charge. B) An atom has hardly any empty space, and the nucleus has a negative charge. C) An atom is mainly empty space, and the nucleus has a positive charge. D) An atom has hardly any empty space, and the nucleus has a positive charge. 18. Which element is an alkali metal? A) ...
Chem Notes
... - 4 elements: fire, earth, air and water - their ideas prevailed because they had more influence at the time Scientific Revolution 1450-1850 - increased in evidence-based conclusions - development of Atomic Theory - Lavoisier - LOCM 1700s - Robert Brown - Brownian Motion 1827 - John Dalton early 180 ...
... - 4 elements: fire, earth, air and water - their ideas prevailed because they had more influence at the time Scientific Revolution 1450-1850 - increased in evidence-based conclusions - development of Atomic Theory - Lavoisier - LOCM 1700s - Robert Brown - Brownian Motion 1827 - John Dalton early 180 ...
Unit B - Topic 2.0 Notes
... Section 2.1 Evolving Theories of Matter The Stone Age (~8000 BC) • Metals had not yet been discovered. Rock and bone were used to construct tools. In the Middle East people learned to make and control fire and to change a variety of substances to meet their needs. They cooked food, hardened mud, bri ...
... Section 2.1 Evolving Theories of Matter The Stone Age (~8000 BC) • Metals had not yet been discovered. Rock and bone were used to construct tools. In the Middle East people learned to make and control fire and to change a variety of substances to meet their needs. They cooked food, hardened mud, bri ...
Ms - cloudfront.net
... 11. Describe the following trend on the periodic table. a. Atomic Number b. Atomic Size c. Ionization Energy d. Electronegativy 12. Which atom is more electronegative, fluorine or lithium? 13. Which atom has a greater ionization energy, nitrogen or bismuth? 14. Which atom has a larger atomic radius, ...
... 11. Describe the following trend on the periodic table. a. Atomic Number b. Atomic Size c. Ionization Energy d. Electronegativy 12. Which atom is more electronegative, fluorine or lithium? 13. Which atom has a greater ionization energy, nitrogen or bismuth? 14. Which atom has a larger atomic radius, ...
JJ Thomson
... certain amounts or distances from nucleus; electron transitions from higher to lower levels result in discrete wavelengths of emitted light ...
... certain amounts or distances from nucleus; electron transitions from higher to lower levels result in discrete wavelengths of emitted light ...
4.1 Early Theories of Matter The Philosophers Democritus – Greek
... speed of light (3.00 x 108 m/s) A small change in mass that occurs when the nucleus changes releases a huge amount of energy (mass defect) ...
... speed of light (3.00 x 108 m/s) A small change in mass that occurs when the nucleus changes releases a huge amount of energy (mass defect) ...
File - LSAmockscience
... • When one element replaces another element in a compound A + BC AC + B Element + compound new element + new compound ...
... • When one element replaces another element in a compound A + BC AC + B Element + compound new element + new compound ...
honors chem 6 day review packet
... Metals _____________ electrons. They form __________________. Nonmetals ______________________ electrons. They form __________. Trends Atomic radius (size) ionization energy (energy to remove an electron) Electronegativity (ability to gain an electron) Reactivity for metal (metallic character) React ...
... Metals _____________ electrons. They form __________________. Nonmetals ______________________ electrons. They form __________. Trends Atomic radius (size) ionization energy (energy to remove an electron) Electronegativity (ability to gain an electron) Reactivity for metal (metallic character) React ...
Name: ___________ Class: _____ Date: _______________ FALL
... ____ 90. Strontium's highest occupied energy level is 5s2. To what group does strontium belong? a. Alkali Metals c. Transition Metals b. Alkaline Earth Metals d. Halogens ____ 91. What is given off when an electron falls back down to a lower energy level? a. electrons c. protons b. light d. elements ...
... ____ 90. Strontium's highest occupied energy level is 5s2. To what group does strontium belong? a. Alkali Metals c. Transition Metals b. Alkaline Earth Metals d. Halogens ____ 91. What is given off when an electron falls back down to a lower energy level? a. electrons c. protons b. light d. elements ...
Chapter 5 - HCC Learning Web
... In the 1920’s our understanding of electrons in atoms became very sophisticated. Werner Heisenberg suggested the uncertainty principle- that is, it is impossible to simultaneously know both the precise location and energy of an electron. Instead, the energy of an electron can be known only in terms ...
... In the 1920’s our understanding of electrons in atoms became very sophisticated. Werner Heisenberg suggested the uncertainty principle- that is, it is impossible to simultaneously know both the precise location and energy of an electron. Instead, the energy of an electron can be known only in terms ...
Unit 2
... Isotopes Half-life is the length of time required for one half of a given sample of a radioactive isotope to decay. ...
... Isotopes Half-life is the length of time required for one half of a given sample of a radioactive isotope to decay. ...
Name
... 1. Describe how particles move and draw a diagram for each state of matter: a. Solid b. Liquid ...
... 1. Describe how particles move and draw a diagram for each state of matter: a. Solid b. Liquid ...
The Chemistry of Life
... Polymers of molecules called amino acids. Amino acids are compounds with an amino group (-NH2) and a carboxyle group (-COOH). More than 20 different amino acids found in nature. Function of proteins – control rate of reactions, regulate cell processes, form bones and muscles, transport substances in ...
... Polymers of molecules called amino acids. Amino acids are compounds with an amino group (-NH2) and a carboxyle group (-COOH). More than 20 different amino acids found in nature. Function of proteins – control rate of reactions, regulate cell processes, form bones and muscles, transport substances in ...
Fall Exam 3
... Orbital energies increase in the order 3s < 3p < 3d because orbital penetration decreases in the order 3s > 3p > 3d. Orbital energies increase in the order 3s < 3p < 3d because the Schrödinger equation predicts that orbital energy depends only on the angular momentum quantum number, l. Orbital energ ...
... Orbital energies increase in the order 3s < 3p < 3d because orbital penetration decreases in the order 3s > 3p > 3d. Orbital energies increase in the order 3s < 3p < 3d because the Schrödinger equation predicts that orbital energy depends only on the angular momentum quantum number, l. Orbital energ ...
Atomic History WebQuest
... •Bohr used and modified Rutherford’s model of the atom. Bohr originated the idea that electrons travel in a definite energy level around the nucleus with no loss of energy from their motion. He applied Planck’s idea of small packets or quanta of energy to his electron model. •Electrons in energy lev ...
... •Bohr used and modified Rutherford’s model of the atom. Bohr originated the idea that electrons travel in a definite energy level around the nucleus with no loss of energy from their motion. He applied Planck’s idea of small packets or quanta of energy to his electron model. •Electrons in energy lev ...
atomic mass
... • ORBITAL: the regions in an atom where there is a high probability of finding electrons. • s is the lowest energy orbital, and p is slightly higher ...
... • ORBITAL: the regions in an atom where there is a high probability of finding electrons. • s is the lowest energy orbital, and p is slightly higher ...
Bonding
... of atomic structure, explain wht these isotopes have in common, and how they differ. b.Write the complete electron configuration for a selenium atom in the ground state. Indicate the number of unpaired electrons in the ground-state atom, and explain your reasoning. ...
... of atomic structure, explain wht these isotopes have in common, and how they differ. b.Write the complete electron configuration for a selenium atom in the ground state. Indicate the number of unpaired electrons in the ground-state atom, and explain your reasoning. ...
Physics
... Today, the wavelike properties of beams of electrons are useful in magnifying objects. The electrons in an electron microscope have much smaller wavelengths than visible light. This allows a much clearer enlarged image of a very small object, such as this ...
... Today, the wavelike properties of beams of electrons are useful in magnifying objects. The electrons in an electron microscope have much smaller wavelengths than visible light. This allows a much clearer enlarged image of a very small object, such as this ...
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 ...
Chapter 2 Outline
... b. High heat vaporization (much heat is lost during evaporation…which is beneficial when we sweat) c. Universal solvent (required for most chemical reactions to occur) e.g. blood, CSF, urine, mucus d. Important reactants – water breaks many food bonds during digestion e. Important products – water c ...
... b. High heat vaporization (much heat is lost during evaporation…which is beneficial when we sweat) c. Universal solvent (required for most chemical reactions to occur) e.g. blood, CSF, urine, mucus d. Important reactants – water breaks many food bonds during digestion e. Important products – water c ...
Atom
... In 1911, Ernest Rutherford interpreted these results and suggested a new model for the atom. He said that Thomson's model could not be right. The positive charge must be concentrated in a tiny volume at the center of the atom, otherwise the heavy alpha particles fired at foil could never be repelle ...
... In 1911, Ernest Rutherford interpreted these results and suggested a new model for the atom. He said that Thomson's model could not be right. The positive charge must be concentrated in a tiny volume at the center of the atom, otherwise the heavy alpha particles fired at foil could never be repelle ...
