Chemistry lecture notes
... Protons and neutrons are held together by an attraction force (strong interaction). An electrostatic ruplsion between protons occurs inside the nucleus The balance of the two forces controls some important features of nuclear stability ...
... Protons and neutrons are held together by an attraction force (strong interaction). An electrostatic ruplsion between protons occurs inside the nucleus The balance of the two forces controls some important features of nuclear stability ...
Chemistry ~ Fall Final Review
... Measurement: significant figures, sci. notation, guess digits, density Properties of Matter: atoms/molecules, elements & compounds, chemical/physical changes History of the atom: models & scientists Wave calculations: properties of waves, energy, frequency, wavelength Electron configuration: orbital ...
... Measurement: significant figures, sci. notation, guess digits, density Properties of Matter: atoms/molecules, elements & compounds, chemical/physical changes History of the atom: models & scientists Wave calculations: properties of waves, energy, frequency, wavelength Electron configuration: orbital ...
Atoms - SWThornton
... All matter is made up of atoms. All atoms of an element are identical in size, mass, and chemical properties. Atoms of an element are different from atoms of all other elements. Atoms may neither be divided nor destroyed. Atoms may be combined, separated, and rearranged to form new compounds. Atoms ...
... All matter is made up of atoms. All atoms of an element are identical in size, mass, and chemical properties. Atoms of an element are different from atoms of all other elements. Atoms may neither be divided nor destroyed. Atoms may be combined, separated, and rearranged to form new compounds. Atoms ...
Lecture slides - e
... Covalent bonding occurs between atoms of non-metals. When the atoms form a bond they become lower in energy and the system is more stable. The energy saved by moving to a more stable situation is released as heat. For this reason bond formation is always exothermic, i.e. heat energy is released. ...
... Covalent bonding occurs between atoms of non-metals. When the atoms form a bond they become lower in energy and the system is more stable. The energy saved by moving to a more stable situation is released as heat. For this reason bond formation is always exothermic, i.e. heat energy is released. ...
Atomic Theory Notes Page
... measure its position. He found that the electron's position and momentum did indeed obey the uncertainty relation he had derived mathematically Conclusions: Electrons are located in clouds, not neat orbits; tells you where the electron is most likely to be found (a matter of probability). o Chadwi ...
... measure its position. He found that the electron's position and momentum did indeed obey the uncertainty relation he had derived mathematically Conclusions: Electrons are located in clouds, not neat orbits; tells you where the electron is most likely to be found (a matter of probability). o Chadwi ...
Atomic Structure
... The nucleus of an atom is extremely small in comparison to the atom. If an atom was the size of the Houston Astrodome, then its nucleus would be the size of a pea. Scientists use the Periodic Table in order to find out important information about various elements. Invented by Dmitri Mendeleev (1834- ...
... The nucleus of an atom is extremely small in comparison to the atom. If an atom was the size of the Houston Astrodome, then its nucleus would be the size of a pea. Scientists use the Periodic Table in order to find out important information about various elements. Invented by Dmitri Mendeleev (1834- ...
6.1 Organizing the Periodic Table
... # of Energy Levels (shells)occupied by the electrons in Fluorine ...
... # of Energy Levels (shells)occupied by the electrons in Fluorine ...
Name:
... ___B_ 2. Thought that matter was made of tiny particles that could not be divided ___D_ 3. Provided evidence that an atom contains negatively charged particles ___A_ 4. Stated that matter could be grouped into air, water, fire and earth ___C_ 5. Stated that when elements combine in a compound, the r ...
... ___B_ 2. Thought that matter was made of tiny particles that could not be divided ___D_ 3. Provided evidence that an atom contains negatively charged particles ___A_ 4. Stated that matter could be grouped into air, water, fire and earth ___C_ 5. Stated that when elements combine in a compound, the r ...
Basic Atomic Theory
... • Strength of Coulomb forces much larger than gravitational • +ve and –ve charges cause attractive and repulsive interactions. ...
... • Strength of Coulomb forces much larger than gravitational • +ve and –ve charges cause attractive and repulsive interactions. ...
Packet 5
... Early Theories of The Atom DemocritusDemocritus (b. c. 460 BC; d. c. 370 BC) postulated the existence of invisible atoms, characterized only by quantitative properties: size, shape, and motion. Imagine these atoms as indivisible spheres, the smallest pieces of an element that still behave like the ...
... Early Theories of The Atom DemocritusDemocritus (b. c. 460 BC; d. c. 370 BC) postulated the existence of invisible atoms, characterized only by quantitative properties: size, shape, and motion. Imagine these atoms as indivisible spheres, the smallest pieces of an element that still behave like the ...
Section 2.1
... • All atoms of a given element are identical to one another in mass and other properties, but atoms of an element are unique to that element only. • Atoms of an element are not changed into atoms of a different element by chemical reactions; they are neither created nor destroyed. • Compounds are fo ...
... • All atoms of a given element are identical to one another in mass and other properties, but atoms of an element are unique to that element only. • Atoms of an element are not changed into atoms of a different element by chemical reactions; they are neither created nor destroyed. • Compounds are fo ...
Atom Study Guide
... Democritus – first person to use the word ATOM John Dalton – experiments led to everybody agreeing that there are atoms. Came up with Dalton’s Atomic Theory. All elements are composed of atoms. Atoms are indivisible and indestructible particles. (not true because there are smaller parts within the ...
... Democritus – first person to use the word ATOM John Dalton – experiments led to everybody agreeing that there are atoms. Came up with Dalton’s Atomic Theory. All elements are composed of atoms. Atoms are indivisible and indestructible particles. (not true because there are smaller parts within the ...
TERM 2 Unit 3 YR 9 SCI It is elementary
... understandings of atomic structure. Students model an atom according to currently accepted understandings. They will identify patterns in atomic structure that allow prediction of the products of chemical reactions and are reflected by the periodic table. They recognise that new substances are forme ...
... understandings of atomic structure. Students model an atom according to currently accepted understandings. They will identify patterns in atomic structure that allow prediction of the products of chemical reactions and are reflected by the periodic table. They recognise that new substances are forme ...
S1-2-02: What is the basic subatomic structure of an atom?
... c) You add a bit of salt to the water. d) You poach the eggs by placing them into the water. e) You cut the eggs up to eat them. 10. Which one of the following is a physical change? a) Acid damages the surface of a car. b) The car burns up gasoline on a trip. c) The car explodes in a collision. d) T ...
... c) You add a bit of salt to the water. d) You poach the eggs by placing them into the water. e) You cut the eggs up to eat them. 10. Which one of the following is a physical change? a) Acid damages the surface of a car. b) The car burns up gasoline on a trip. c) The car explodes in a collision. d) T ...
Topic one midterm review
... – If the “Plum Pudding” model was correct then the α particles would pass through the foil with just a few being slightly ...
... – If the “Plum Pudding” model was correct then the α particles would pass through the foil with just a few being slightly ...
Chemistry: The Basics
... – Discovered by James Chadwick in 1932. – Actual mass = 1.67 x 10-24 grams – No charge ...
... – Discovered by James Chadwick in 1932. – Actual mass = 1.67 x 10-24 grams – No charge ...
elements_and_the_periodic_table_2011
... Atoms are the smallest part of an element that has all the properties of an element. ...
... Atoms are the smallest part of an element that has all the properties of an element. ...
Atomic Theory - Aurora City Schools
... called an isotope. • That’s why atomic mass is not a whole number, it averages all the isotopes • Write the mass number and atomic number to left of symbol ...
... called an isotope. • That’s why atomic mass is not a whole number, it averages all the isotopes • Write the mass number and atomic number to left of symbol ...
Matter ppt NOTES
... bonds with one or more atoms to fill their outermost energy level (valence!) Compounds form when atoms are more stable in a combined form Most stable elements = Noble gases ...
... bonds with one or more atoms to fill their outermost energy level (valence!) Compounds form when atoms are more stable in a combined form Most stable elements = Noble gases ...
Six Weeks Review PPT
... Democritus, 460 BC – proposes particles so small they can not be destroyed or divided, and describes them as “atomos” (uncuttable) John Dalton, early 1800’s - first to use “atom”; proposes that atoms of the same element are identical, and atoms of different elements have different weights/masses; So ...
... Democritus, 460 BC – proposes particles so small they can not be destroyed or divided, and describes them as “atomos” (uncuttable) John Dalton, early 1800’s - first to use “atom”; proposes that atoms of the same element are identical, and atoms of different elements have different weights/masses; So ...
Chapter 4 Study Guide
... What does the Greek word atomos mean? What were the different beliefs’s about atoms that Democritus and Aristotle had? ...
... What does the Greek word atomos mean? What were the different beliefs’s about atoms that Democritus and Aristotle had? ...
What is atomic radius? - KCPE-KCSE
... 2. Number of free electrons. Sodium has one free electron per metal ion, whereas aluminium has three. This leads to more attractions that must be broken in aluminium. ...
... 2. Number of free electrons. Sodium has one free electron per metal ion, whereas aluminium has three. This leads to more attractions that must be broken in aluminium. ...