Lecture 3
... Isotopes are atoms of the same element that have different mass numbers; they have the same number of protons but different numbers of neutrons Isotopes are difficult to separate from each other, therefore they occur in any sample of the element in their natural abundance which remains relatively co ...
... Isotopes are atoms of the same element that have different mass numbers; they have the same number of protons but different numbers of neutrons Isotopes are difficult to separate from each other, therefore they occur in any sample of the element in their natural abundance which remains relatively co ...
AtomsIntro His
... number. • Mass numbers are found by adding the protons and neutrons. • Atomic mass of an element is the average mass of all the isotopes of that element. ...
... number. • Mass numbers are found by adding the protons and neutrons. • Atomic mass of an element is the average mass of all the isotopes of that element. ...
Early Atomic Theorists
... Boron has two naturally occurring isotopes: boron-10 (19.8%, 10.013 amu) and boron 11 (80.2%, 11.009 amu). What is the atomic mass of boron? ...
... Boron has two naturally occurring isotopes: boron-10 (19.8%, 10.013 amu) and boron 11 (80.2%, 11.009 amu). What is the atomic mass of boron? ...
Study Guide Chapters 4
... 2. Calculate the average atomic mass of chlorine with two isotopes. Cl-35 has a mass of 34.969 amu with an abundance of 75.53%, while Cl-37 has a mass of 36.966 amu at 24.47% 3. Sketch a simple atomic model of the oxygen atom. Include all subatomic particles. Label the parts. 4. Which subatomic part ...
... 2. Calculate the average atomic mass of chlorine with two isotopes. Cl-35 has a mass of 34.969 amu with an abundance of 75.53%, while Cl-37 has a mass of 36.966 amu at 24.47% 3. Sketch a simple atomic model of the oxygen atom. Include all subatomic particles. Label the parts. 4. Which subatomic part ...
20040702 - canteach
... lithium. The symbols Li-6 and Li-7 represent them. Isotopes of an element have the same number of protons in their atoms but varying numbers of neutrons. All isotopes of a given element have similar chemical and physical properties but may show very large variations in nuclear properties (in lighter ...
... lithium. The symbols Li-6 and Li-7 represent them. Isotopes of an element have the same number of protons in their atoms but varying numbers of neutrons. All isotopes of a given element have similar chemical and physical properties but may show very large variations in nuclear properties (in lighter ...
Chemistry Semester Test Study Guide Chapters
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
... What state of matter has a definite volume and takes the shape of its container? Which state of matter takes both the shape and volume of its container? In a chemical reaction, what are the reactants and what are the products? If the total mass of the reactants in a chemical reaction is 60 g, what i ...
Atomic Structure
... As you might expect different isotopes of the same element will have different masses. If you look at the periodic table, however, you'll notice that there is only one number listed for the mass of each element. How can you only have one mass if there is more than one isotope of each element? The a ...
... As you might expect different isotopes of the same element will have different masses. If you look at the periodic table, however, you'll notice that there is only one number listed for the mass of each element. How can you only have one mass if there is more than one isotope of each element? The a ...
Document
... – has ____ charge and _____ mass. – is the _____________ energy form of electromagnetic radiation. – It takes thick blocks of lead or concrete to stop gamma rays. – Gamma decay results from ____________ being released from a high-energy ________________. Often, other kinds of radioactive decay wil ...
... – has ____ charge and _____ mass. – is the _____________ energy form of electromagnetic radiation. – It takes thick blocks of lead or concrete to stop gamma rays. – Gamma decay results from ____________ being released from a high-energy ________________. Often, other kinds of radioactive decay wil ...
Atomic Structure and Types of Atoms Notes
... isotope is identified by its mass number, which is the sum of the protons and neutrons in the nucleus of an ...
... isotope is identified by its mass number, which is the sum of the protons and neutrons in the nucleus of an ...
Chapter 3 pages 65
... This finding is important because it was the first finding that showed particles of the atom ...
... This finding is important because it was the first finding that showed particles of the atom ...
ATOMIC STRUCTURE
... • Said that all matter is composed of tiny, _____________ particles called __________ (atoms) In 1803, _______________ studied experiments and concluded that the properties of matter could be explained in terms of __________. Dalton’s _________________ was based on the following ideas: o Each __ ...
... • Said that all matter is composed of tiny, _____________ particles called __________ (atoms) In 1803, _______________ studied experiments and concluded that the properties of matter could be explained in terms of __________. Dalton’s _________________ was based on the following ideas: o Each __ ...
a) air c) milk f) beer
... a fixed amount of nitrogen? Bonus question: Give possibilities for the compounds. ...
... a fixed amount of nitrogen? Bonus question: Give possibilities for the compounds. ...
Exam #2 Review
... Most common isotope = atomic mass from the Periodic Table rounded to a whole number 18. What is the difference between mass number and average atomic mass? Mass # = mass of each specific isotope (protons + neutrons) Average atomic mass = weighted average mass of ALL isotopes (found on the Periodic T ...
... Most common isotope = atomic mass from the Periodic Table rounded to a whole number 18. What is the difference between mass number and average atomic mass? Mass # = mass of each specific isotope (protons + neutrons) Average atomic mass = weighted average mass of ALL isotopes (found on the Periodic T ...
Chapter 2 Test Review - Mercer Island School District
... The emission spectrum. Specific Frequencies of light are observed. The light is emitted from electrons when they return to the ground state energy level. If all colors of light were of light were observed (as with a rainbow) then Bohr would ...
... The emission spectrum. Specific Frequencies of light are observed. The light is emitted from electrons when they return to the ground state energy level. If all colors of light were of light were observed (as with a rainbow) then Bohr would ...
MORE ABOUT PROTONS, NEUTRONS AND ELECTRONS
... If you take a good look at the Periodic table you will find that the elements all have their mass (weight) recorded in a.m.u. The figure used is the RELATIVE ATOMIC MASS. A definition of this figure is - the weighted mean of naturally occuring atoms of that element. It is very important to refer to ...
... If you take a good look at the Periodic table you will find that the elements all have their mass (weight) recorded in a.m.u. The figure used is the RELATIVE ATOMIC MASS. A definition of this figure is - the weighted mean of naturally occuring atoms of that element. It is very important to refer to ...
Radioactivity
... • Gamma rays are waves, not particles. This means that they have no mass and no charge. • γ rays have a high penetrating power - it takes a thick sheet of metal such as lead, or concrete to reduce them significantly. • γ rays do not directly ionise other atoms, although they may cause atoms to emit ...
... • Gamma rays are waves, not particles. This means that they have no mass and no charge. • γ rays have a high penetrating power - it takes a thick sheet of metal such as lead, or concrete to reduce them significantly. • γ rays do not directly ionise other atoms, although they may cause atoms to emit ...
Chapter Two Atoms & The Periodic Table
... All matter is made up of atoms Atoms are indivisible Atoms of the same element are identical Atoms of one element are different than atoms of another element Atoms come together to form compounds ...
... All matter is made up of atoms Atoms are indivisible Atoms of the same element are identical Atoms of one element are different than atoms of another element Atoms come together to form compounds ...
Name: Period:______ Date: CHEMISTRY Chapter 3 AND Nuclear
... 21. A bucket of water, a pool filled with water, and an ocean filled with water all have water as a ratio of one oxygen atom to two hydrogen atoms. 22. If the mass of the reactant is equal to the mass of the product what law is being demonstrated? 23. combining two smaller atoms together into a larg ...
... 21. A bucket of water, a pool filled with water, and an ocean filled with water all have water as a ratio of one oxygen atom to two hydrogen atoms. 22. If the mass of the reactant is equal to the mass of the product what law is being demonstrated? 23. combining two smaller atoms together into a larg ...
UNIT 2: BIOCHEMISTRY/ENZYMES
... • These nutrients can now enter the cell and be used as building blocks of compounds needed for life ...
... • These nutrients can now enter the cell and be used as building blocks of compounds needed for life ...
CHEMISTRY notes
... The reaction can “shift” left or right under certain conditions EXCESS REACTANT shifts right (excess product, left) REMOVING REACTANT shifts left (removing product, right) ADDING/REMOVING ENERGY can shift it as well http://www.youtube.com/watch?v=a_4LUaaL6FU&feature=fvsr (blue bottle) http://www.you ...
... The reaction can “shift” left or right under certain conditions EXCESS REACTANT shifts right (excess product, left) REMOVING REACTANT shifts left (removing product, right) ADDING/REMOVING ENERGY can shift it as well http://www.youtube.com/watch?v=a_4LUaaL6FU&feature=fvsr (blue bottle) http://www.you ...
Document
... 1) Most of the radioactivity we personally encounter comes from A) nuclear power plants. B) medical X rays. C) the natural environment. D) fallout from past and present testing of nuclear weapons. 2) In order for an atom to decay to an element which is one greater in atomic number, it can emit A) o ...
... 1) Most of the radioactivity we personally encounter comes from A) nuclear power plants. B) medical X rays. C) the natural environment. D) fallout from past and present testing of nuclear weapons. 2) In order for an atom to decay to an element which is one greater in atomic number, it can emit A) o ...
Long Half-Life in Radioactive Decay
... total heat flows to Earth’s surface averages about 0.1 watt/m2, this is about 10,000 times less energy than we get from the Sun. Since these isotopes are still present, and the Earth’s age is about 4.6 billion years, it’s obvious that they have significant lifetimes. A common measure of radionuclide ...
... total heat flows to Earth’s surface averages about 0.1 watt/m2, this is about 10,000 times less energy than we get from the Sun. Since these isotopes are still present, and the Earth’s age is about 4.6 billion years, it’s obvious that they have significant lifetimes. A common measure of radionuclide ...
Macromolecule notes
... 1. Single – each carbon shares only 1 e-. 2. Double – each carbon shares 2 e-. 3. Triple – each carbon shares 3 e-. ...
... 1. Single – each carbon shares only 1 e-. 2. Double – each carbon shares 2 e-. 3. Triple – each carbon shares 3 e-. ...
Isotopic labeling
Isotopic labeling (or isotopic labelling) is a technique used to track the passage of an isotope, or an atom with a variation, through a reaction, metabolic pathway, or cell. The reactant is 'labeled' by replacing specific atoms by their isotope. The reactant is then allowed to undergo the reaction. The position of the isotopes in the products is measured to determine the sequence the isotopic atom followed in the reaction or the cell's metabolic pathway. The nuclides used in isotopic labeling may be stable nuclides or radionuclides. In the latter case, the labeling is called radiolabeling.In isotopic labeling, there are multiple ways to detect the presence of labeling isotopes; through their mass, vibrational mode, or radioactive decay. Mass spectrometry detects the difference in an isotope's mass, while infrared spectroscopy detects the difference in the isotope's vibrational modes. Nuclear magnetic resonance detects atoms with different gyromagnetic ratios. The radioactive decay can be detected through an ionization chamber or autoradiographs of gels.An example of the use of isotopic labeling is the study of phenol (C6H5OH) in water by replacing common hydrogen (protium) with deuterium (deuterium labeling). Upon adding phenol to deuterated water (water containing D2O in addition to the usual H2O), the substitution of deuterium for the hydrogen is observed in phenol's hydroxyl group (resulting in C6H5OD), indicating that phenol readily undergoes hydrogen-exchange reactions with water. Only the hydroxyl group was affected, indicating that the other 5 hydrogen atoms did not participate in these exchange reactions.