7A SCIENCE FINAL REVIEW - MERRICK 7th SCIENCE REVIEW
... ___ Describe the difference between atoms and molecules. ___ Define elements, compounds, and mixtures. ___ Recognize elements from compounds if given the chemical symbol or a model. ___ Describe the difference between a chemical and physical property of matter, give examples of each. ___ Describe th ...
... ___ Describe the difference between atoms and molecules. ___ Define elements, compounds, and mixtures. ___ Recognize elements from compounds if given the chemical symbol or a model. ___ Describe the difference between a chemical and physical property of matter, give examples of each. ___ Describe th ...
Atoms - FTHS Wiki
... contain different numbers of PROTONS • The “atomic number” of an element is the number of protons in the nucleus ...
... contain different numbers of PROTONS • The “atomic number” of an element is the number of protons in the nucleus ...
History of the Atom
... “They reasoned that the solidness of the material corresponded to the shape of the atoms involved. Thus, iron atoms are solid and strong with hooks that lock them into a solid; water atoms are smooth and slippery; salt atoms, because of their taste, are sharp and pointed; and air atoms are light and ...
... “They reasoned that the solidness of the material corresponded to the shape of the atoms involved. Thus, iron atoms are solid and strong with hooks that lock them into a solid; water atoms are smooth and slippery; salt atoms, because of their taste, are sharp and pointed; and air atoms are light and ...
2011 Chem Facts Key
... 16. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 17. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 18. Electrons can be excited to jump to higher energy levels. They emit energy as light ...
... 16. The Bohr Model of the atom placed electrons in “planet-like” orbits around the nucleus of an atom. 17. The current, wave-mechanical model of the atom has electrons in “clouds” (orbitals) around the nucleus. 18. Electrons can be excited to jump to higher energy levels. They emit energy as light ...
ATOMIC STRUCTURE Text Book Chapters 2, 4, 5 OBJECTIVES
... dense nucleus separated from electrons located outside The difference is that Electrons do not stay in definite fixed orbits – rather they are probably found in a region around the nucleus called an _________________ Picture of current model: ...
... dense nucleus separated from electrons located outside The difference is that Electrons do not stay in definite fixed orbits – rather they are probably found in a region around the nucleus called an _________________ Picture of current model: ...
File - Mr. Sault`s Classroom
... All matter is made up of very small particles All particles in a pure substance are the same. Different substances are made of different particles There is space between particles The particles are always moving. As the particles gain energy, they move faster The particles in a substance are ...
... All matter is made up of very small particles All particles in a pure substance are the same. Different substances are made of different particles There is space between particles The particles are always moving. As the particles gain energy, they move faster The particles in a substance are ...
Part a
... (a) The slightly positive ends (+) of the water molecules become aligned with the slightly negative ends (–) of other water molecules. Copyright © 2010 Pearson Education, Inc. ...
... (a) The slightly positive ends (+) of the water molecules become aligned with the slightly negative ends (–) of other water molecules. Copyright © 2010 Pearson Education, Inc. ...
1 - WordPress.com
... mass of Z is 258.63 amu, which of these isotopes is most abundant? Since the atomic mass is the weighted average, the most abundant will be the isotope with the mass number closest to the atomic mass: Z-259 ...
... mass of Z is 258.63 amu, which of these isotopes is most abundant? Since the atomic mass is the weighted average, the most abundant will be the isotope with the mass number closest to the atomic mass: Z-259 ...
The Structure of Matter
... We can determine the probable location of an electron based on the amount of energy the electron has This probable location is called an orbital ...
... We can determine the probable location of an electron based on the amount of energy the electron has This probable location is called an orbital ...
The discovery of the electron
... • Atoms are charged neutral. • The discovery of electron raised a question about the presence of a positive charge, to neutralize the negative charge of the electron. ...
... • Atoms are charged neutral. • The discovery of electron raised a question about the presence of a positive charge, to neutralize the negative charge of the electron. ...
Review Questions: Name Period 1. The atom (smallest unit of an
... 18. In the Bohr model for helium pictured above, the 2 white circles represent electrons. Which particles are in the center of this atomic model ...
... 18. In the Bohr model for helium pictured above, the 2 white circles represent electrons. Which particles are in the center of this atomic model ...
Name: Date: ______ Period: _____ Chemistry 1st semester final
... 37. How are the elements arranged on the periodic table?By increasing atomic number 38. Why do element in the same family have similar chemical properties?b/c they have the same number of valance electrons 39. What type of elements is found in the upper right hand part of the periodic table?nonmetal ...
... 37. How are the elements arranged on the periodic table?By increasing atomic number 38. Why do element in the same family have similar chemical properties?b/c they have the same number of valance electrons 39. What type of elements is found in the upper right hand part of the periodic table?nonmetal ...
Draw atomic models showing the appropriate number of electrons
... 3. The electrical force of attraction that holds ions of opposite charge together 4. A chemical bond in which atoms are held together by their mutual attraction for two electrons they share 5. Type of bond that forms between two atoms of similar electronegativity when electrons are equally shared 6. ...
... 3. The electrical force of attraction that holds ions of opposite charge together 4. A chemical bond in which atoms are held together by their mutual attraction for two electrons they share 5. Type of bond that forms between two atoms of similar electronegativity when electrons are equally shared 6. ...
Periodic Trends
... nucleus and more electrons to the orbits – this means more attraction between the opposing charges and the orbits are pulled in even closer to the nucleus. ...
... nucleus and more electrons to the orbits – this means more attraction between the opposing charges and the orbits are pulled in even closer to the nucleus. ...
atomic number on the periodic table
... • Dmitri Mendeleev, a Russian scientist born in Siberia in 1834, is known as the father of the periodic table of the elements • The periodic table is designed to help you predict chemical and physical properties of elements ...
... • Dmitri Mendeleev, a Russian scientist born in Siberia in 1834, is known as the father of the periodic table of the elements • The periodic table is designed to help you predict chemical and physical properties of elements ...
Chapter 2a - Angelfire
... nucleus of an atom contained what he called ______________________(has the same magnitude of charge as the electron, but its charge is positive) • Protons have a _________ charge and the electron a charge of ______________. • 1932, he and a coworker (James Chadwick) were able to show that most nucle ...
... nucleus of an atom contained what he called ______________________(has the same magnitude of charge as the electron, but its charge is positive) • Protons have a _________ charge and the electron a charge of ______________. • 1932, he and a coworker (James Chadwick) were able to show that most nucle ...
Chapter 7
... to explain why materials combined in definite proportions instead of random proportions. When hydrogen and oxygen are mixed, for example, only a certain number of grams of hydrogen will combine with any particular amount of oxygen to produce water. It was not until the 1980’s that atoms could be see ...
... to explain why materials combined in definite proportions instead of random proportions. When hydrogen and oxygen are mixed, for example, only a certain number of grams of hydrogen will combine with any particular amount of oxygen to produce water. It was not until the 1980’s that atoms could be see ...