Photoelectric effect - The University of Sydney
... In this experiment you again observe the photoelectric effect, but this time you’re going to measure the amount of energy the ejected electrons receive from the photons. energy E = hf. This means that electrons knocked out from the surface of a material will all have roughly the same amount of kinet ...
... In this experiment you again observe the photoelectric effect, but this time you’re going to measure the amount of energy the ejected electrons receive from the photons. energy E = hf. This means that electrons knocked out from the surface of a material will all have roughly the same amount of kinet ...
AS Unit F321 Unit 1 Side A check list
... State the formulae of the common acids: hydrochloric, 2ulphuric and nitric acids. State that common bases are metal oxides, metal hydroxides and ammonia. State that an alkali is a soluble base that releases OH– ions in aqueous solution. State the formulae of the common alkalis: sodium hydroxide, pot ...
... State the formulae of the common acids: hydrochloric, 2ulphuric and nitric acids. State that common bases are metal oxides, metal hydroxides and ammonia. State that an alkali is a soluble base that releases OH– ions in aqueous solution. State the formulae of the common alkalis: sodium hydroxide, pot ...
Final Exam
... 6. What is the density at 22°C of 13.0 milliliters of a liquid that has a mass of 4.45 grams? A. 57.85 g/mL B. 2.921 g/mL C. 0.342 g/mL D. 1,272.7 g/mL ...
... 6. What is the density at 22°C of 13.0 milliliters of a liquid that has a mass of 4.45 grams? A. 57.85 g/mL B. 2.921 g/mL C. 0.342 g/mL D. 1,272.7 g/mL ...
Word - chemmybear.com
... There are three types of bonds, but four types of solids held together with these bonds. Lattice: a repeating pattern, like a lattice-work fence. In solids, it is a repeating pattern of atoms. All solids are made up of a lattice. The points of the lattice are different in different types of solids. ...
... There are three types of bonds, but four types of solids held together with these bonds. Lattice: a repeating pattern, like a lattice-work fence. In solids, it is a repeating pattern of atoms. All solids are made up of a lattice. The points of the lattice are different in different types of solids. ...
The Hydrogen Atom - Valdosta State University
... Chapter 9 The Hydrogen Atom Goal - to solve for all eigenstates (orbitals) H atom - single nucleus, charge Z (+1) and one eattracted by Coulomb’s Law Will find third quantum number, n, that is ≥ 1 1. Write the full Hamiltonian. Now need to let r vary since real atoms don’t have fixed distances betwe ...
... Chapter 9 The Hydrogen Atom Goal - to solve for all eigenstates (orbitals) H atom - single nucleus, charge Z (+1) and one eattracted by Coulomb’s Law Will find third quantum number, n, that is ≥ 1 1. Write the full Hamiltonian. Now need to let r vary since real atoms don’t have fixed distances betwe ...
Free-electron lasers
... M. Suga et al. “Native structure of photosystem II at 1.95 A resolution viewed by femtosecond X-ray pulses”, Nature Letters. Motivation: Photo-synthesis converts light from the sun very effective into chemical energy that triggers the conversion of CO2 to O2. If Photo-synthesis would be fully unders ...
... M. Suga et al. “Native structure of photosystem II at 1.95 A resolution viewed by femtosecond X-ray pulses”, Nature Letters. Motivation: Photo-synthesis converts light from the sun very effective into chemical energy that triggers the conversion of CO2 to O2. If Photo-synthesis would be fully unders ...
You may recall the formula: V = W/q Potential difference between
... 2nd Law KE of electrons is independent of intensity the KE of the electrons should be determined by the energy absorbed by the light, which is determined by intensity light of any frequency should work if intense enough even at low intensity, electrons should eventually "soak up" e ...
... 2nd Law KE of electrons is independent of intensity the KE of the electrons should be determined by the energy absorbed by the light, which is determined by intensity light of any frequency should work if intense enough even at low intensity, electrons should eventually "soak up" e ...
Untitled - Washington County Schools
... compounds that help the biological world survive. Are there pieces of matter that are smaller than atoms? Sure there are. Super-small particles can be found inside the pieces of atoms. These subatomic particles include nucleons and quarks. Nuclear chemists and physicists work together at particle ac ...
... compounds that help the biological world survive. Are there pieces of matter that are smaller than atoms? Sure there are. Super-small particles can be found inside the pieces of atoms. These subatomic particles include nucleons and quarks. Nuclear chemists and physicists work together at particle ac ...
Chemical Reactions
... each type of atom is in a compound. – NaCl has 1 sodium and 1 chlorine atom – H2O has 2 hydrogen atoms and 1 oxygen atom – C6H12O6 has 6 carbon, 12 hydrogen, and 6 oxygen atoms ...
... each type of atom is in a compound. – NaCl has 1 sodium and 1 chlorine atom – H2O has 2 hydrogen atoms and 1 oxygen atom – C6H12O6 has 6 carbon, 12 hydrogen, and 6 oxygen atoms ...
II. Radioactive Decay
... Isotopes - atoms of the same element with the same number of protons but different numbers of neutrons Radioisotopes – isotope with an unstable nucleus that emits radiation to become a more stable nucleus ...
... Isotopes - atoms of the same element with the same number of protons but different numbers of neutrons Radioisotopes – isotope with an unstable nucleus that emits radiation to become a more stable nucleus ...
Chemistry Study Guide
... 6. What kind of bond is NaCl? Ionic CO2 Covalent N2 Covalent 7. Which group forms acids with H+ ion? Halogens (Group 17) 8. How many valence electrons are in a Group 1 element? 1 Group 13? 3 9. How do positive and negative ions form? Positive ions form when an atom loses an electron, negative ions f ...
... 6. What kind of bond is NaCl? Ionic CO2 Covalent N2 Covalent 7. Which group forms acids with H+ ion? Halogens (Group 17) 8. How many valence electrons are in a Group 1 element? 1 Group 13? 3 9. How do positive and negative ions form? Positive ions form when an atom loses an electron, negative ions f ...
Set #4 - comsics
... electron typically spends about 10-8 s in an excited state before it drops to a lower state by emitting a photon. How many revolutions does an electron in an n = 2 Bohr orbit make in 10-8 s? ...
... electron typically spends about 10-8 s in an excited state before it drops to a lower state by emitting a photon. How many revolutions does an electron in an n = 2 Bohr orbit make in 10-8 s? ...
Models of an atom and old quantum theory
... cannot emit any more photons of radiation. All other states are called excited. An excited atom can emit photons and fall eventually back to its ground-state. Several photons with appropriate discrete frequencies can be emitted in the process. The de-excitation process appears to be random, and a st ...
... cannot emit any more photons of radiation. All other states are called excited. An excited atom can emit photons and fall eventually back to its ground-state. Several photons with appropriate discrete frequencies can be emitted in the process. The de-excitation process appears to be random, and a st ...
JJ Thompson Webquest
... observations of the curvature of an electron beam in cathode ray tubes in a magnetic field. ...
... observations of the curvature of an electron beam in cathode ray tubes in a magnetic field. ...
Chem20u2(5.2) - Mr. Searcy Chemistry 20
... I. The learning objectives for this section are: 1. Define and give an example of: ground state, quantum mechanical model of the atom, atomic orbital, principal energy level, energy sublevel. 2. Summarize the contributions made by Bohr, de Broglie, Heisenberg, and ...
... I. The learning objectives for this section are: 1. Define and give an example of: ground state, quantum mechanical model of the atom, atomic orbital, principal energy level, energy sublevel. 2. Summarize the contributions made by Bohr, de Broglie, Heisenberg, and ...
Energy and Matter
... Energy Measurements – Calories (cal)= 4.184 J – BTU – Joules (J)- the work done when one kg is accelerated 1 m per second (1J= 1kg X m / s. – KWh ...
... Energy Measurements – Calories (cal)= 4.184 J – BTU – Joules (J)- the work done when one kg is accelerated 1 m per second (1J= 1kg X m / s. – KWh ...
chemistry - cloudfront.net
... indicates the main energy level occupied by the electrons (n). How many electrons can occupy an s orbital, p orbital, d and f orbitals? S=2, p=6, d=10, f=14 Which atom would have an octet of electrons (full s and p orbitals): Ar (He only has 2 electrons) PERIODIC TABLE Who is Dmitri Mendeleev? ...
... indicates the main energy level occupied by the electrons (n). How many electrons can occupy an s orbital, p orbital, d and f orbitals? S=2, p=6, d=10, f=14 Which atom would have an octet of electrons (full s and p orbitals): Ar (He only has 2 electrons) PERIODIC TABLE Who is Dmitri Mendeleev? ...
Chemistry: The Basics
... – Discovered in 1886, Eugen Goldstein saw cathode rays traveling against the flow. – What do you think the proton’s mass is in relation to the electron? 1,840 ________________ times as big – Actual mass = 1.67 x 10-24 grams – One unit of positive charge ...
... – Discovered in 1886, Eugen Goldstein saw cathode rays traveling against the flow. – What do you think the proton’s mass is in relation to the electron? 1,840 ________________ times as big – Actual mass = 1.67 x 10-24 grams – One unit of positive charge ...
Rutherford backscattering spectrometry
Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science. Sometimes referred to as high-energy ion scattering (HEIS) spectrometry, RBS is used to determine the structure and composition of materials by measuring the backscattering of a beam of high energy ions (typically protons or alpha particles) impinging on a sample.