Unit 2 Notes Atomic Structures
... of philosophy, science, and medicine for the next two thousand years. Everything visible was made up of some combination of earth, water, air, and fire Democritus: (460-370 B.C.) Democritus was an ancient Greek philosopher who is an influential pre-Socratic philosopher and pupil of Leucippus, who fo ...
... of philosophy, science, and medicine for the next two thousand years. Everything visible was made up of some combination of earth, water, air, and fire Democritus: (460-370 B.C.) Democritus was an ancient Greek philosopher who is an influential pre-Socratic philosopher and pupil of Leucippus, who fo ...
Atomic Theory and Structure Notes
... something you want to explain (so a model that represents the structure of an atom is called an atomic model). ...
... something you want to explain (so a model that represents the structure of an atom is called an atomic model). ...
Atomic Structure PPT
... 2) Valence electrons are the electrons in the outer most shell. 3) Valence electrons are important because they affect how the element reacts with other elements. ...
... 2) Valence electrons are the electrons in the outer most shell. 3) Valence electrons are important because they affect how the element reacts with other elements. ...
Chapter 4
... At the center of each atom is a small, dense nucleus with a positive charge The nucleus is made up of protons (+) and neutrons (no charge) protons and neutrons are almost identical in size an mass but protons have a positive charge and neutrons are ...
... At the center of each atom is a small, dense nucleus with a positive charge The nucleus is made up of protons (+) and neutrons (no charge) protons and neutrons are almost identical in size an mass but protons have a positive charge and neutrons are ...
Atoms - Acpsd.net
... https://www.youtube.com/watch?v=BE4WrgUlbZk https://www.youtube.com/watch?v=EMDrb2LqL7E ...
... https://www.youtube.com/watch?v=BE4WrgUlbZk https://www.youtube.com/watch?v=EMDrb2LqL7E ...
Atomic Structure
... meaning “indivisible” or “not to be cut” •Ancient Greeks believed matter was made of 4 basic elements: fire, air, water, and earth ...
... meaning “indivisible” or “not to be cut” •Ancient Greeks believed matter was made of 4 basic elements: fire, air, water, and earth ...
Lesson Summary
... support it. In 1803, the British scientist John Dalton suggested that the idea of atoms could help explain why elements come together in specific ratios when they form compounds. He imagined atoms of different elements combining to form compounds in the ratios specified by the chemical formulas of t ...
... support it. In 1803, the British scientist John Dalton suggested that the idea of atoms could help explain why elements come together in specific ratios when they form compounds. He imagined atoms of different elements combining to form compounds in the ratios specified by the chemical formulas of t ...
Atomic Information
... The Neutron • Early models of the atom only considered two particles of the atom, the proton and the electron. • The neutron has a mass about equal to the proton, but has no charge. Having neutrons would not pose a problem if all atoms of a particular element had the same number of neutrons – but t ...
... The Neutron • Early models of the atom only considered two particles of the atom, the proton and the electron. • The neutron has a mass about equal to the proton, but has no charge. Having neutrons would not pose a problem if all atoms of a particular element had the same number of neutrons – but t ...
4.1 Studying Atoms
... atoms are made of even smaller particles. a. He used a sealed tube containing a very small amount of gas. When a current was turned on, the disks became charged, and a glowing beam appeared in the tube. 1) He hypothesized that the beam was a stream of charged particles that interacted with the air i ...
... atoms are made of even smaller particles. a. He used a sealed tube containing a very small amount of gas. When a current was turned on, the disks became charged, and a glowing beam appeared in the tube. 1) He hypothesized that the beam was a stream of charged particles that interacted with the air i ...
Development of atomic model
... Theory of Matter. Recall though that the ideas of Democritus were opposed by Aristotle and were not commonly considered until more than 2,000 years later. It was not until the 1800’s that British chemist John Dalton began to revive the atomic theory of matter by sharing the results of his experiment ...
... Theory of Matter. Recall though that the ideas of Democritus were opposed by Aristotle and were not commonly considered until more than 2,000 years later. It was not until the 1800’s that British chemist John Dalton began to revive the atomic theory of matter by sharing the results of his experiment ...
Activity 4 Are Atoms Indivisible?
... electric charge, where would you expect to find electrons in atoms? 2. Are atoms indivisible? Support your answer using information from this activity. 3. Construct a chart or diagram to summarize what you have learned in this activity about the particles that make up an atom. Include electric charg ...
... electric charge, where would you expect to find electrons in atoms? 2. Are atoms indivisible? Support your answer using information from this activity. 3. Construct a chart or diagram to summarize what you have learned in this activity about the particles that make up an atom. Include electric charg ...
Chap 03A-Atoms and Elements.pptx
... Ø explains the difference between an element and a compound. Ø explains two scientific laws, and Ø predicts a new scientific law. ...
... Ø explains the difference between an element and a compound. Ø explains two scientific laws, and Ø predicts a new scientific law. ...
120CH02
... • Elements are composed of extremely small particles, called atoms. • All atoms of an element are identical (same size, mass, chem. prop). • The atoms of one element are different from the atoms of all other elements. • An atom cannot be created, divided, destroyed or converted into any other type o ...
... • Elements are composed of extremely small particles, called atoms. • All atoms of an element are identical (same size, mass, chem. prop). • The atoms of one element are different from the atoms of all other elements. • An atom cannot be created, divided, destroyed or converted into any other type o ...
The Development of Atomic Theory
... Look at examples up front, or use your own method • Guidelines: Don’t make models too small • The electron orbits should get bigger as you add them (see example) • Keep all electrons same color bead/ clay/ material etc. • All protons should be one color/type • All neutrons should be one color/type M ...
... Look at examples up front, or use your own method • Guidelines: Don’t make models too small • The electron orbits should get bigger as you add them (see example) • Keep all electrons same color bead/ clay/ material etc. • All protons should be one color/type • All neutrons should be one color/type M ...
High School Physical Science Glossary
... ionic bond- type of chemical bond involving the transfer of electrons and the formation of ions; can often form between a metal and a non-metal ionic compound- compound where two or more ions are held next to each other by electrical attraction isotopes- atoms having the same number of protons (ato ...
... ionic bond- type of chemical bond involving the transfer of electrons and the formation of ions; can often form between a metal and a non-metal ionic compound- compound where two or more ions are held next to each other by electrical attraction isotopes- atoms having the same number of protons (ato ...
File - Team 8-2 Gregory Middle School
... This could only mean that the gold atoms were mostly open space, not a pudding filled with a positively charged material. Rutherford concluded that an atom had a small, dense, positively charged center that ...
... This could only mean that the gold atoms were mostly open space, not a pudding filled with a positively charged material. Rutherford concluded that an atom had a small, dense, positively charged center that ...
Atoms, Molecules, and Ions The Evolution of the Atomic Model (from
... chemical systems. These became known as Dalton’s Atomic Theory and he proposed this the year 1803. The primary difference between Dalton’s theory and previous ones was that Dalton’s was based on reproducible laboratory evidence. ...
... chemical systems. These became known as Dalton’s Atomic Theory and he proposed this the year 1803. The primary difference between Dalton’s theory and previous ones was that Dalton’s was based on reproducible laboratory evidence. ...
14.2 Notes on Electrons Atoms interact with each other through their
... Atoms interact with each other through their electrons Almost all properties of elements are due to electrons Almost all light you see comes from atoms Each different element has its own characteristic pattern of colors called a spectrum The colors of everything around you come from this property of ...
... Atoms interact with each other through their electrons Almost all properties of elements are due to electrons Almost all light you see comes from atoms Each different element has its own characteristic pattern of colors called a spectrum The colors of everything around you come from this property of ...
CHAPTER 3
... B) It is the proven process of turning one substance into another and immortality C) It is the philosophy put forth by Aristotle. D) It is the original philosophy dealing with the term atoms. E) It is the science that laid the foundations for modern chemistry. 7) Which of the following statements be ...
... B) It is the proven process of turning one substance into another and immortality C) It is the philosophy put forth by Aristotle. D) It is the original philosophy dealing with the term atoms. E) It is the science that laid the foundations for modern chemistry. 7) Which of the following statements be ...
atom
... perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another.” —Richard Feynman ...
... perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another.” —Richard Feynman ...
Chemistry 50
... A) The boiling point of water on the Fahrenheit scale is 212 degrees. B) The Celsius degree is smaller than the Fahrenheit degree. C) The freezing point of water on the Celsius scale is 0 degrees. D) All temperatures on the Kelvin scale are positive numbers. ...
... A) The boiling point of water on the Fahrenheit scale is 212 degrees. B) The Celsius degree is smaller than the Fahrenheit degree. C) The freezing point of water on the Celsius scale is 0 degrees. D) All temperatures on the Kelvin scale are positive numbers. ...
Investigating Atoms and Atomic Theory
... piece would be obtained. This piece would be indivisible. He named the smallest piece of matter “atomos,” meaning “not to be cut.” ...
... piece would be obtained. This piece would be indivisible. He named the smallest piece of matter “atomos,” meaning “not to be cut.” ...
History of molecular theory
In chemistry, the history of molecular theory traces the origins of the concept or idea of the existence of strong chemical bonds between two or more atoms.The modern concept of molecules can be traced back towards pre-scientific Greek philosophers such as Leucippus who argued that all the universe is composed of atoms and voids. Circa 450 BC Empedocles imagined fundamental elements (fire (20px), earth (20px), air (20px), and water (20px)) and ""forces"" of attraction and repulsion allowing the elements to interact. Prior to this, Heraclitus had claimed that fire or change was fundamental to our existence, created through the combination of opposite properties. In the Timaeus, Plato, following Pythagoras, considered mathematical entities such as number, point, line and triangle as the fundamental building blocks or elements of this ephemeral world, and considered the four elements of fire, air, water and earth as states of substances through which the true mathematical principles or elements would pass. A fifth element, the incorruptible quintessence aether, was considered to be the fundamental building block of the heavenly bodies. The viewpoint of Leucippus and Empedocles, along with the aether, was accepted by Aristotle and passed to medieval and renaissance Europe. A modern conceptualization of molecules began to develop in the 19th century along with experimental evidence for pure chemical elements and how individual atoms of different chemical substances such as hydrogen and oxygen can combine to form chemically stable molecules such as water molecules.