History of the atom
... location and velocity of an electron at any point in time • You can estimate where an electron will be 90% of the time • An electron cloud shows where an electron spends most of its time ...
... location and velocity of an electron at any point in time • You can estimate where an electron will be 90% of the time • An electron cloud shows where an electron spends most of its time ...
IS Chapter 3
... 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, and 7p; per http://en.wikipedia.org/wiki/Electron_configuration on 5/6/09! 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p! ...
... 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, and 7p; per http://en.wikipedia.org/wiki/Electron_configuration on 5/6/09! 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p! ...
Electrons
... For example: Na (Sodium), has originally 11 electrons but when an electron is lost it becomes a positive ion. Na+ ...
... For example: Na (Sodium), has originally 11 electrons but when an electron is lost it becomes a positive ion. Na+ ...
Review 2 - Solutions - Mayfield City Schools
... Who used light to figure out that atoms have distinct orbits? - Bohr ...
... Who used light to figure out that atoms have distinct orbits? - Bohr ...
Chapter 4: Chemical Reactions Elements can be characterized as
... reactions. Oxidation numbers are more important in binary ionic compounds than molecular compounds. Some abbreviated rules that apply are below (full list on page 138): 1. Oxidation number of free element is zero, even polyatomic ones (S8, P4….) 2. Oxidation number of an element that is a single mon ...
... reactions. Oxidation numbers are more important in binary ionic compounds than molecular compounds. Some abbreviated rules that apply are below (full list on page 138): 1. Oxidation number of free element is zero, even polyatomic ones (S8, P4….) 2. Oxidation number of an element that is a single mon ...
Atoms: The Building Blocks of Matter
... Why are elements placed in a group (column)? Why are elements placed in a period (row?) ...
... Why are elements placed in a group (column)? Why are elements placed in a period (row?) ...
Chapter 2: The Composition and Structure of the Atom • 2.1 Matter
... o Energy is released as the electron travels back to lower levels. Relaxation. o Orbit – what Bohr called the fixed energy levels. o Ground state – the lowest possible energy state an electron can occupy. o The orbits are also identified using “quantum numbers”: 1, 2, 3, … o When the electron relaxe ...
... o Energy is released as the electron travels back to lower levels. Relaxation. o Orbit – what Bohr called the fixed energy levels. o Ground state – the lowest possible energy state an electron can occupy. o The orbits are also identified using “quantum numbers”: 1, 2, 3, … o When the electron relaxe ...
Variation in Properties of Group II Compounds
... II elements and their compounds are illustrated. Variation in properties of group II elements and their compounds include both physical and chemical properties. Variation in Physical Properties of the Elements Variation in Atomic and Ionic radii There is a general increase in atomic and ionic radii ...
... II elements and their compounds are illustrated. Variation in properties of group II elements and their compounds include both physical and chemical properties. Variation in Physical Properties of the Elements Variation in Atomic and Ionic radii There is a general increase in atomic and ionic radii ...
Drawing Bohr-Rutherford Diagrams
... how they all fit together we can draw the diagrams. 1. Find the number of protons (atomic number = # of protons) 2. Find the number of electrons (# of protons = # of electrons it’s a neutral atom) 3. Calculate the number of neutrons (#neutrons = mass number – atomic number) 4. Draw a circle and wr ...
... how they all fit together we can draw the diagrams. 1. Find the number of protons (atomic number = # of protons) 2. Find the number of electrons (# of protons = # of electrons it’s a neutral atom) 3. Calculate the number of neutrons (#neutrons = mass number – atomic number) 4. Draw a circle and wr ...
Chapter 3
... d. Atoms of different elements combine in simple _______________________________ to form ______________________________________. e. In chemical reactions, atoms are__________________________________________ _____________________________. Modern Atomic Theory 8. Which aspects of Dalton's theory have ...
... d. Atoms of different elements combine in simple _______________________________ to form ______________________________________. e. In chemical reactions, atoms are__________________________________________ _____________________________. Modern Atomic Theory 8. Which aspects of Dalton's theory have ...
10-1
... describe their mass. Outside of the nucleus is the electron cloud or region where the electrons can be found. Electrons are extremely small. It takes almost 2000 electrons to equal the mass of 1 proton or neutron. Since their mass is so small, their mass is not considered or 0amu. Electrons have a n ...
... describe their mass. Outside of the nucleus is the electron cloud or region where the electrons can be found. Electrons are extremely small. It takes almost 2000 electrons to equal the mass of 1 proton or neutron. Since their mass is so small, their mass is not considered or 0amu. Electrons have a n ...
Present - Images
... In nuclear reactions, unstable nuclei change their number of protons and neutrons. A DIFFERENT element is created by the reaction, and large amounts of energy are released (E=mc2), much more than in a chemical reaction. Nuclear reactions result in the production of new, more stable nuclei. Unsta ...
... In nuclear reactions, unstable nuclei change their number of protons and neutrons. A DIFFERENT element is created by the reaction, and large amounts of energy are released (E=mc2), much more than in a chemical reaction. Nuclear reactions result in the production of new, more stable nuclei. Unsta ...
NOTES – 14.1 – Structure of the Atom (FPS3)
... We say an object is electrically neutral when its total electric charge is zero. Atoms are normally neutral, but the things that make them up are charged. ...
... We say an object is electrically neutral when its total electric charge is zero. Atoms are normally neutral, but the things that make them up are charged. ...
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. ...
Unit 1 Problem Set
... 14. Identify which of the following provide evidence to support the Bohr model of the hydrogen atom? I The energy of the lines in the emission spectra of atomic hydrogen. II The energy of the missing lines in the absorption spectra of helium as seen from the sun. III The relative intensity of the di ...
... 14. Identify which of the following provide evidence to support the Bohr model of the hydrogen atom? I The energy of the lines in the emission spectra of atomic hydrogen. II The energy of the missing lines in the absorption spectra of helium as seen from the sun. III The relative intensity of the di ...
Chemistry! - Duplin County Schools
... • Words you need to know: – Magnetism – a force between like or unlike poles – Solubility – ability to dissolve – Density – mass per unit volume (mass divided by volume) ...
... • Words you need to know: – Magnetism – a force between like or unlike poles – Solubility – ability to dissolve – Density – mass per unit volume (mass divided by volume) ...
1st Semester Chem Final Exam Study Guide 2012-2013
... Be able to identify an element’s period and group. 8a. The period and group for Magnesium is ____________________. b. The electron configuration of a certain element ends in 4p4. The period and group for this element is: _______________________________ Be able to identify any element as a metal, no ...
... Be able to identify an element’s period and group. 8a. The period and group for Magnesium is ____________________. b. The electron configuration of a certain element ends in 4p4. The period and group for this element is: _______________________________ Be able to identify any element as a metal, no ...
File
... the rungs just like ___________ can’t be in between levels, and to climb you need the right amount of energy -Levels are NOT _______________ apart, so electrons gain or lose different amounts energy -Higher energy levels are __________ together… it takes ________ energy to move from one to the next ...
... the rungs just like ___________ can’t be in between levels, and to climb you need the right amount of energy -Levels are NOT _______________ apart, so electrons gain or lose different amounts energy -Higher energy levels are __________ together… it takes ________ energy to move from one to the next ...
Chemistry 11 – Course Review
... Element “X” is composed of the following naturally occurring isotopes: Isotope ...
... Element “X” is composed of the following naturally occurring isotopes: Isotope ...
Chemistry Part 1
... combined chemically Compound—two or more different atoms combined chemically ...
... combined chemically Compound—two or more different atoms combined chemically ...
unit iii - atomic theory 1
... 1) Law of Constant Composition – a given compound always contains the same proportion of elements by mass * example: water is always composed of 88.9% O & 11.1% H 2) Law of Conservation of Mass * 4 parts to his theory: 1) All matter is composed of indivisible, indestructible atoms. 2) All atoms of t ...
... 1) Law of Constant Composition – a given compound always contains the same proportion of elements by mass * example: water is always composed of 88.9% O & 11.1% H 2) Law of Conservation of Mass * 4 parts to his theory: 1) All matter is composed of indivisible, indestructible atoms. 2) All atoms of t ...
Goal 5 – Structure and Properties of Matter
... within the nucleus are overcome by the binding force that holds it together. The atomic number of an element is the same as the number of protons and electrons within a neutral atom of that element. Matter is anything that takes up space and has mass. All matter has both physical and chemical proper ...
... within the nucleus are overcome by the binding force that holds it together. The atomic number of an element is the same as the number of protons and electrons within a neutral atom of that element. Matter is anything that takes up space and has mass. All matter has both physical and chemical proper ...
2/1: Atomic Structure
... • atoms could not be divided • all elements of a given element are the same • different atoms could join to form compounds – Thomson • the plum pudding model • negatively-charged "plums” surrounded by positivelycharged "pudding” – Rutherford http://www.mhhe.com/physsci/chemistry/essentialchemistry/f ...
... • atoms could not be divided • all elements of a given element are the same • different atoms could join to form compounds – Thomson • the plum pudding model • negatively-charged "plums” surrounded by positivelycharged "pudding” – Rutherford http://www.mhhe.com/physsci/chemistry/essentialchemistry/f ...
Atomic structure
... number of protons, they may have different numbers of neutrons. Atoms that mass number is different called isotopes For example, two isotopes of carbon: mass number is different atomic number is the same ...
... number of protons, they may have different numbers of neutrons. Atoms that mass number is different called isotopes For example, two isotopes of carbon: mass number is different atomic number is the same ...