4.1Atoms and Isotopes
... abundant), C-13 (used in medical imagingMRI), and C-14 (used for dating fossils) Tin (Sn) has the most isotopes of any element at 10 Many isotopes are radioactive (unstable nucleus that will eventually break apart and release energy in sometimes harmful forms – eg. Gamma rays) Any isotope with an at ...
... abundant), C-13 (used in medical imagingMRI), and C-14 (used for dating fossils) Tin (Sn) has the most isotopes of any element at 10 Many isotopes are radioactive (unstable nucleus that will eventually break apart and release energy in sometimes harmful forms – eg. Gamma rays) Any isotope with an at ...
Honors Chem: Atomic History-Isotopes
... were used to make 12 grams of compound Z, how many grams of element X were required? According to the law of conservation of mass, if element A has a mass of 2 mass units, and element B has a mass of 3 mass units, what mass would be expected for compound AB? State the law of multiple proportions [co ...
... were used to make 12 grams of compound Z, how many grams of element X were required? According to the law of conservation of mass, if element A has a mass of 2 mass units, and element B has a mass of 3 mass units, what mass would be expected for compound AB? State the law of multiple proportions [co ...
Chapter 2 Notes
... 1. molecules- 2 or more atoms combined; atoms share electrons in the outermost portion of their electron clouds; example: (H2O) 2. compounds- when 2 or more substances combine chemically; has properties different from the properties of each of the elements in it; example: water (H2O) 3. chemical pro ...
... 1. molecules- 2 or more atoms combined; atoms share electrons in the outermost portion of their electron clouds; example: (H2O) 2. compounds- when 2 or more substances combine chemically; has properties different from the properties of each of the elements in it; example: water (H2O) 3. chemical pro ...
Notes
... - Group trend - electron affinities become more positive (less negative) because less energy is released due to shielding and increased distance from nucleus (less attraction for e-) Note relationship between ionization energy ( energy change for X(g) -->X+(g) + e-) and electron affinity ( energy ch ...
... - Group trend - electron affinities become more positive (less negative) because less energy is released due to shielding and increased distance from nucleus (less attraction for e-) Note relationship between ionization energy ( energy change for X(g) -->X+(g) + e-) and electron affinity ( energy ch ...
Electron Dot Diagrams
... Rules For Drawing Bohr Diagrams Consult the Periodic Table of the Elements for the type of atom you are going to represent in a Bohr diagram. Write down its atomic number and mass number. The atomic number is the number of protons, and the mass number is the number of protons and neutrons. The numb ...
... Rules For Drawing Bohr Diagrams Consult the Periodic Table of the Elements for the type of atom you are going to represent in a Bohr diagram. Write down its atomic number and mass number. The atomic number is the number of protons, and the mass number is the number of protons and neutrons. The numb ...
Nuclear Fission sim
... amounts of energy, there have to be a LOT of them. How can we do that? • Some fissionable materials have the property that, while they require one neutron to fission, they produce more than one neutron. This means that, if you have enough atoms (a CRITICAL MASS), the one neutron you started with qui ...
... amounts of energy, there have to be a LOT of them. How can we do that? • Some fissionable materials have the property that, while they require one neutron to fission, they produce more than one neutron. This means that, if you have enough atoms (a CRITICAL MASS), the one neutron you started with qui ...
How are Molecules Depicted? - Belle Vernon Area School District
... E level of an atom and determines the chemical properties Lewis Structure = a structure in which e- are represented by dots: dot pairs or dashes b/t 2 atomic symbols represents pairs in covalent bonds ...
... E level of an atom and determines the chemical properties Lewis Structure = a structure in which e- are represented by dots: dot pairs or dashes b/t 2 atomic symbols represents pairs in covalent bonds ...
4.1 Early Theories of Matter The Philosophers Democritus – Greek
... Refined the idea of the nucleus by working with hydrogen Discovered that each element contains a unique positive charge that occurs in a whole number ratio to that of hydrogen Developed the idea of atomic number in terms of this positive charge The amount of positive charge would later be de ...
... Refined the idea of the nucleus by working with hydrogen Discovered that each element contains a unique positive charge that occurs in a whole number ratio to that of hydrogen Developed the idea of atomic number in terms of this positive charge The amount of positive charge would later be de ...
Mileposts on the road to the atom (download)
... Proposed that atoms of heavier elements were made from hydrogen atoms Implication that larger atoms comprise smaller units Partial truth: there are common factors between atoms of different elements But they are not H atoms… ...
... Proposed that atoms of heavier elements were made from hydrogen atoms Implication that larger atoms comprise smaller units Partial truth: there are common factors between atoms of different elements But they are not H atoms… ...
Investigating Atoms and Atomic Theory
... location of an electron. The probable location of an electron is based on how much energy the electron has. According to the modern atomic model, at atom has a small positively charged nucleus surrounded by a large region in which there are enough electrons to make an atom neutral. ...
... location of an electron. The probable location of an electron is based on how much energy the electron has. According to the modern atomic model, at atom has a small positively charged nucleus surrounded by a large region in which there are enough electrons to make an atom neutral. ...
Atomic Structure
... Isotopes of elements All atoms can be characterized by two numbers: the atomic number and the mass number. The atomic number (Z) is simply equal to the number of protons in the nucleus of the atom. As atoms are electrically neutral this will also be equal to the number of electrons in the atom. Ato ...
... Isotopes of elements All atoms can be characterized by two numbers: the atomic number and the mass number. The atomic number (Z) is simply equal to the number of protons in the nucleus of the atom. As atoms are electrically neutral this will also be equal to the number of electrons in the atom. Ato ...
Historical Development of an Atom - pams
... Atoms cannot be divided into smaller pieces. All the atoms of an element are exactly the same Different elements have different kinds of atoms Compounds form by combining atoms ...
... Atoms cannot be divided into smaller pieces. All the atoms of an element are exactly the same Different elements have different kinds of atoms Compounds form by combining atoms ...
atomic number
... http://www.youtube.com/watch?v=RIg1Vh7uPyw&list=TL9l iUotc3avVG69w_AB1a0zk9sCfDLWVc&safe=active ...
... http://www.youtube.com/watch?v=RIg1Vh7uPyw&list=TL9l iUotc3avVG69w_AB1a0zk9sCfDLWVc&safe=active ...
Carbon Isotopes
... A different isotope of the same element A new element The original radioisotope is always referred to as the parent nuclide (the unstable nucleus), and the resulting isotope as the daughter nuclide. Many radioactive elements decay as part of a decay chain, in which the original parent nuclide fo ...
... A different isotope of the same element A new element The original radioisotope is always referred to as the parent nuclide (the unstable nucleus), and the resulting isotope as the daughter nuclide. Many radioactive elements decay as part of a decay chain, in which the original parent nuclide fo ...
Introduction to Atoms
... • Atoms are the building blocks of all materials • An atom is made of 3 parts: – Protons and Neutrons are in the nucleus (center) – Electrons orbit around the nucleus ...
... • Atoms are the building blocks of all materials • An atom is made of 3 parts: – Protons and Neutrons are in the nucleus (center) – Electrons orbit around the nucleus ...
Atoms Development of the Atomic Theory
... Alpha radiation consists of particles containing two protons and two neutrons. Alpha particles are identical to a helium nucleus. The symbol is a or 4HeThey are large but do not penetrate. The relative mass is 4 and the charge is +2. Beta radiation consists of fast-moving electrons. The symbol for a ...
... Alpha radiation consists of particles containing two protons and two neutrons. Alpha particles are identical to a helium nucleus. The symbol is a or 4HeThey are large but do not penetrate. The relative mass is 4 and the charge is +2. Beta radiation consists of fast-moving electrons. The symbol for a ...
the Note
... A conclusion is made and tested against the hypothesis – sometimes the hypothesis is confirmed but most times completely unexpected results are obtained. ...
... A conclusion is made and tested against the hypothesis – sometimes the hypothesis is confirmed but most times completely unexpected results are obtained. ...
History of Atomic Theories Worksheet
... supported, much later, by __(2)__, who proposed, in his law of __(3)__, that matter cannot be created or destroyed. Then __(4)__ proposed, in his law of __(5)__, that the ratio of the masses of elements in any given compound is always the same. The law of __(6)__, proposed soon after, states that th ...
... supported, much later, by __(2)__, who proposed, in his law of __(3)__, that matter cannot be created or destroyed. Then __(4)__ proposed, in his law of __(5)__, that the ratio of the masses of elements in any given compound is always the same. The law of __(6)__, proposed soon after, states that th ...
Matter and Atoms Notes
... Weird that we (and our coffins) break down when we die (don’t actually disappear-atoms that make us up go help other things like plants grow). We can’t destroy atoms…mind blown (or make them). Weird that everything is always moving (even though it doesn’t appear to move). What we eat has been someth ...
... Weird that we (and our coffins) break down when we die (don’t actually disappear-atoms that make us up go help other things like plants grow). We can’t destroy atoms…mind blown (or make them). Weird that everything is always moving (even though it doesn’t appear to move). What we eat has been someth ...
Atomic Structure
... • If you change the number of protons, you change the type of atom itself. • If you change the number of electrons, you change the atom to an ion (charged particle). • If you change the number of neutrons, you change the isotope of that element. ...
... • If you change the number of protons, you change the type of atom itself. • If you change the number of electrons, you change the atom to an ion (charged particle). • If you change the number of neutrons, you change the isotope of that element. ...
