Exam 1 Review Sheet Honors Biology This is to be used for
... 9. Draw a neutral oxygen atom with a mass of 16 in the lowest energy state (also called the ground state because all the electrons are closest to the “ground” if you think of the nucleus as the Earth). Now modify your atom so that it is not in the ground state. 10. Explain why the electrons in the i ...
... 9. Draw a neutral oxygen atom with a mass of 16 in the lowest energy state (also called the ground state because all the electrons are closest to the “ground” if you think of the nucleus as the Earth). Now modify your atom so that it is not in the ground state. 10. Explain why the electrons in the i ...
Atomic Theory
... in the star merge to form neutrons and neutrinos. The neutrons form the neutron star, which is usually around 20 km in diameter, but can be over twice the mass of the sun. Nuclear fission reactions occur when a free neutron hits an atom's nucleus causing it to break apart into two different nuclei, ...
... in the star merge to form neutrons and neutrinos. The neutrons form the neutron star, which is usually around 20 km in diameter, but can be over twice the mass of the sun. Nuclear fission reactions occur when a free neutron hits an atom's nucleus causing it to break apart into two different nuclei, ...
Atomic Theory
... • In 1913, Niels Bohr proposed an improvement to Rutherford’s Model: • Electron’s move in definite orbits around the nucleus, like planets around the sun. ...
... • In 1913, Niels Bohr proposed an improvement to Rutherford’s Model: • Electron’s move in definite orbits around the nucleus, like planets around the sun. ...
Mileposts on the road to the atom
... Without knowledge of atomic mass, impossible to know how many atoms of one element combine with another Essential to know number of atoms to understand chemistry – write chemical formulae Atomic weight scale, largely enabled by Avogadro, provides link between experimental observables and numbers of ...
... Without knowledge of atomic mass, impossible to know how many atoms of one element combine with another Essential to know number of atoms to understand chemistry – write chemical formulae Atomic weight scale, largely enabled by Avogadro, provides link between experimental observables and numbers of ...
Matter: The basics - Mrs. Mastin`s Website
... in the atom was concentrated in the center of the atom ...
... in the atom was concentrated in the center of the atom ...
Chemistry – Higher level Marking Scheme
... 8. (a) LPG 5, Isomers 3, 3; (b) Why 3, What 3, Source 3; (c) Feature 3, Other 3; (d) Define 2 x 3, Calculate 18. 9. (a) Property 5, (i) 3 x (2 x 3), (ii) Stage 3, Name 3, State 3; (b) (i) Primary 2 x 3, Secondary 2 x 3, (ii) Tertiary 2 x 3. 10. Answer any two of the parts (a), (b) and (c). (a) Defin ...
... 8. (a) LPG 5, Isomers 3, 3; (b) Why 3, What 3, Source 3; (c) Feature 3, Other 3; (d) Define 2 x 3, Calculate 18. 9. (a) Property 5, (i) 3 x (2 x 3), (ii) Stage 3, Name 3, State 3; (b) (i) Primary 2 x 3, Secondary 2 x 3, (ii) Tertiary 2 x 3. 10. Answer any two of the parts (a), (b) and (c). (a) Defin ...
Types of Changes in Matter
... Balance one element at a time. Update ALL atom counts after adding a coefficient. If an element appears more than once per side, balance it last. Balance polyatomic ions as single units. “1 SO4” instead of “1 S” and “4 O” ...
... Balance one element at a time. Update ALL atom counts after adding a coefficient. If an element appears more than once per side, balance it last. Balance polyatomic ions as single units. “1 SO4” instead of “1 S” and “4 O” ...
Topic 3 - Holy Cross Collegiate
... Hydrogen peroxide, which is very different from water, contains the same two elements but in different proportions: 6% hydrogen and 94% oxygen. These proportions hold true for every sample of hydrogen peroxide. Pure substances have constant composition, and therefore they also tend to have constant, ...
... Hydrogen peroxide, which is very different from water, contains the same two elements but in different proportions: 6% hydrogen and 94% oxygen. These proportions hold true for every sample of hydrogen peroxide. Pure substances have constant composition, and therefore they also tend to have constant, ...
Chapter 4 Atomic Structure
... change from carbon atom to carbon atom • Some carbon atoms have 6 neutrons, others have 7 neutrons and still others have 8 neutrons ...
... change from carbon atom to carbon atom • Some carbon atoms have 6 neutrons, others have 7 neutrons and still others have 8 neutrons ...
CHEM 1405 Practice Exam #2
... 19) Which of the statements below best describes the following reaction? Na2CO3(s) Na2O(s) + CO2(g) A) Solid sodium carbonate is heated to give solid sodium oxide and carbon dioxide gas. B) Sodium carbonate decomposes to sodium oxide and carbon dioxide. C) Sodium carbonate decomposes to sodium oxi ...
... 19) Which of the statements below best describes the following reaction? Na2CO3(s) Na2O(s) + CO2(g) A) Solid sodium carbonate is heated to give solid sodium oxide and carbon dioxide gas. B) Sodium carbonate decomposes to sodium oxide and carbon dioxide. C) Sodium carbonate decomposes to sodium oxi ...
10/2/2013 The Development of Atomic Models
... atoms are called electron configurations. Three rules—the aufbau principle, the Pauli exclusion principle, and Hund’s rule—tell you how to find the electron configurations of atoms. ...
... atoms are called electron configurations. Three rules—the aufbau principle, the Pauli exclusion principle, and Hund’s rule—tell you how to find the electron configurations of atoms. ...
Chapter 2 PowerPoint
... – Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
... – Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
Chapter 2 A particle view of matter
... The theory was inadequate because it did not explain why electrons moved only in circular orbits. Also, calculations, based on the model, of the energy of lines in emission spectra of atoms with more than one electron agreed poorly with measured values of the energies. According to quantum mechanics ...
... The theory was inadequate because it did not explain why electrons moved only in circular orbits. Also, calculations, based on the model, of the energy of lines in emission spectra of atoms with more than one electron agreed poorly with measured values of the energies. According to quantum mechanics ...
Atomic structure Chapter 6
... • In the 1920s, it was discovered that two electrons in the same orbital do not have exactly the same energy. • The “spin” of an electron describes its magnetic field, which affects its energy. ...
... • In the 1920s, it was discovered that two electrons in the same orbital do not have exactly the same energy. • The “spin” of an electron describes its magnetic field, which affects its energy. ...
Atomic Structure PPQs 2
... State ONE similarity and ONE difference between these two isotopes in terms of the numbers of their fundamental particles. Similarity .......................................................................................................... Difference ................................................ ...
... State ONE similarity and ONE difference between these two isotopes in terms of the numbers of their fundamental particles. Similarity .......................................................................................................... Difference ................................................ ...
Unit 2- The Atom
... 4. Let’s determine the average mass of an atom in the bag. Use the formula below to correctly calculate the element’s average atomic mass. ...
... 4. Let’s determine the average mass of an atom in the bag. Use the formula below to correctly calculate the element’s average atomic mass. ...
Biol 1406 notes Ch 2 8thed - Chemistry
... electron shells. o The first shell, closest to the nucleus, has the lowest potential energy. o Electrons in outer shells have higher potential energy. o Electrons can change their position only if they absorb or release a quantity of en ergy that matches the difference in potential energy between th ...
... electron shells. o The first shell, closest to the nucleus, has the lowest potential energy. o Electrons in outer shells have higher potential energy. o Electrons can change their position only if they absorb or release a quantity of en ergy that matches the difference in potential energy between th ...
Particles in atoms and nuclei
... – Modern interpretation of Rutherford’s proton discovery: • the first reported inelastic nuclear collision reaction: ...
... – Modern interpretation of Rutherford’s proton discovery: • the first reported inelastic nuclear collision reaction: ...
Recaps and Additional Slides Chem 20B: Reference
... Recap of Lecture #26: Direct & Indirect Band Gap Semiconductors, Semi-Metals, Nuclear Decay Direct vs. indirect band gap semiconductors ...
... Recap of Lecture #26: Direct & Indirect Band Gap Semiconductors, Semi-Metals, Nuclear Decay Direct vs. indirect band gap semiconductors ...
Chemistry Final Exam Review 2006-2007
... b. increase c. decrease 22. The elements with the largest atomic radii are found in the: a. b. c. d. ...
... b. increase c. decrease 22. The elements with the largest atomic radii are found in the: a. b. c. d. ...
theory1 (osergienko v1)
... Cathode rays have identical properties regardless of the element used to produce them. All elements must contain identically charged electrons. Atoms are neutral, so there must be positive particles in the atom to balance the negative charge of the electrons Electrons have so little mass that a ...
... Cathode rays have identical properties regardless of the element used to produce them. All elements must contain identically charged electrons. Atoms are neutral, so there must be positive particles in the atom to balance the negative charge of the electrons Electrons have so little mass that a ...
(a) Atoms - Warren County Public Schools
... first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. It goes down the periodic table like that. At this time, the maximum number of electron orbitals or electron shells for any element is seven. ...
... first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. It goes down the periodic table like that. At this time, the maximum number of electron orbitals or electron shells for any element is seven. ...
Types of Chemical Reactions
... Types of decomposition reactions – Decomposition of Binary Compounds – Decomposition of Metal Carbonates – Decomposition of Metal Hydroxides – Decomposition of Metal Chlorates – Decomposition of Acids ...
... Types of decomposition reactions – Decomposition of Binary Compounds – Decomposition of Metal Carbonates – Decomposition of Metal Hydroxides – Decomposition of Metal Chlorates – Decomposition of Acids ...
Periodic Table: Why the repetition
... the energy of these chunks of light could not be just any value ...
... the energy of these chunks of light could not be just any value ...
Section: Development of the Atomic Theory
... Directed Reading B Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY Circle the letter of the best answer for each question. ...
... Directed Reading B Section: Development of the Atomic Theory THE BEGINNING OF ATOMIC THEORY Circle the letter of the best answer for each question. ...