Chemistry
... K. Used the cathode ray tube to ID negative particles which led to the plum pudding model of the atom. L. Theorized that all matter is continuous and not made of particles. M. Stated that equal volumes of different gases have equal numbers of molecules. N. Named the electron after its discovery by T ...
... K. Used the cathode ray tube to ID negative particles which led to the plum pudding model of the atom. L. Theorized that all matter is continuous and not made of particles. M. Stated that equal volumes of different gases have equal numbers of molecules. N. Named the electron after its discovery by T ...
gained (-) or lost (+) an electron
... When an atom gains an electron and becomes more (-) because there are more negative electrons present than positive protons. (Think: “An” means NOT or Negative for Ions) ...
... When an atom gains an electron and becomes more (-) because there are more negative electrons present than positive protons. (Think: “An” means NOT or Negative for Ions) ...
8th Grade
... 16. In 1800 another scientist added to the idea of the Greek guy. Who was this man and what was his idea? _________________________________________________________________________________________ _________________________________________________________________________________________ 17. In _______ ...
... 16. In 1800 another scientist added to the idea of the Greek guy. Who was this man and what was his idea? _________________________________________________________________________________________ _________________________________________________________________________________________ 17. In _______ ...
PowerPoint プレゼンテーション
... Models are often used for things that are too small or too large to be observed or that are too difficult to be understood easily ...
... Models are often used for things that are too small or too large to be observed or that are too difficult to be understood easily ...
Atomic Structure
... The atom consists of a proton and an electron held together by the electromagnetic force between the positively charged proton and the negatively charged electron. The electron orbits around the proton because it is the lighter particle, sort of like the earth orbits around the sun, There are, howev ...
... The atom consists of a proton and an electron held together by the electromagnetic force between the positively charged proton and the negatively charged electron. The electron orbits around the proton because it is the lighter particle, sort of like the earth orbits around the sun, There are, howev ...
P2 Knowledge Powerpoint – WIP Part 2
... P2 6.2 The discovery of the nucleus Until 1911, the accepted model of the atom was known as the plum pudding model (top diagram). It was believed that the atom was a ball of positive charge with negatively‐charged electrons (discovered in 1897) buried inside. Then Ernest Rutherford, together with ...
... P2 6.2 The discovery of the nucleus Until 1911, the accepted model of the atom was known as the plum pudding model (top diagram). It was believed that the atom was a ball of positive charge with negatively‐charged electrons (discovered in 1897) buried inside. Then Ernest Rutherford, together with ...
The Atomic Theory
... Law of Multiple Proportions: If two elements combine to form more than one compound the different weights of one which combine with the same weight of the other are in the ration of small whole numbers. Law of Reciprocal Proportions: The weights of two (or more) substances which react separately wit ...
... Law of Multiple Proportions: If two elements combine to form more than one compound the different weights of one which combine with the same weight of the other are in the ration of small whole numbers. Law of Reciprocal Proportions: The weights of two (or more) substances which react separately wit ...
UNIT 1 Review
... is one where the different parts can be easily seen. o A Homogeneous mixture is one where the particles are mixed so well that the separate parts cannot be seen. ...
... is one where the different parts can be easily seen. o A Homogeneous mixture is one where the particles are mixed so well that the separate parts cannot be seen. ...
CHM 101 - Academic Computer Center
... the energy released when an electron is added to an atom. the magnitude of the negative charge on an electron. the attraction by an atom for electrons in a chemical bond. the magnitude of the negative charge on a molecule. ...
... the energy released when an electron is added to an atom. the magnitude of the negative charge on an electron. the attraction by an atom for electrons in a chemical bond. the magnitude of the negative charge on a molecule. ...
Atomic Structure and the Periodic Table
... center of the atom. This is called the nucleus and it is VERY small compared to the size of the electron cloud. However, protons and neutrons are found in the nucleus and are much heavier than electrons. Because of this, almost all of the mass of an atom is found in the nucleus. The nucleus is said ...
... center of the atom. This is called the nucleus and it is VERY small compared to the size of the electron cloud. However, protons and neutrons are found in the nucleus and are much heavier than electrons. Because of this, almost all of the mass of an atom is found in the nucleus. The nucleus is said ...
1st Semester Chem Final Exam Study Guide 2012-2013
... Be able to identify an element’s period and group. 8a. The period and group for Magnesium is ____________________. b. The electron configuration of a certain element ends in 4p4. The period and group for this element is: _______________________________ Be able to identify any element as a metal, no ...
... Be able to identify an element’s period and group. 8a. The period and group for Magnesium is ____________________. b. The electron configuration of a certain element ends in 4p4. The period and group for this element is: _______________________________ Be able to identify any element as a metal, no ...
Atomic Structure Notes Blank
... If ______________ are added to or subtracted from a neutral atom, the resulting particle is called: ION # of protons ______ # of electrons Electrons have a ______________ charge so: - ______________ a______________ charge produces a ______________ion - ______________ = # of e-______# of p’s - ____ ...
... If ______________ are added to or subtracted from a neutral atom, the resulting particle is called: ION # of protons ______ # of electrons Electrons have a ______________ charge so: - ______________ a______________ charge produces a ______________ion - ______________ = # of e-______# of p’s - ____ ...
Prerequisite Knowledge for Chemistry
... The periodic table is ordered from left to right and down by increasing atomic number. ...
... The periodic table is ordered from left to right and down by increasing atomic number. ...
Discussion Notes (cont.)
... How can atoms of the same element be different? • Isotopes of an element have the same number of protons and electrons but different numbers of neutrons. • The average atomic mass of an element listed in the periodic table is the weighted average mass of the naturally occurring isotopes of that elem ...
... How can atoms of the same element be different? • Isotopes of an element have the same number of protons and electrons but different numbers of neutrons. • The average atomic mass of an element listed in the periodic table is the weighted average mass of the naturally occurring isotopes of that elem ...
ch14
... Zeff increases for the larger 3A elements due to poor shielding by d and f electrons. The larger 3A elements have smaller atomic radii and larger ionization energies than electronegativities than expected. These properties influence the physical and chemical behavior of these elements. ...
... Zeff increases for the larger 3A elements due to poor shielding by d and f electrons. The larger 3A elements have smaller atomic radii and larger ionization energies than electronegativities than expected. These properties influence the physical and chemical behavior of these elements. ...
Atomic Worksheet
... Where would you find a proton in an atom? ___________________________________ What is the charge of an electron?__________ Where would you find an electron in an atom?_________________________________ What is the charge of a neutron?___________ Where would you find a neutron in an atom? ____________ ...
... Where would you find a proton in an atom? ___________________________________ What is the charge of an electron?__________ Where would you find an electron in an atom?_________________________________ What is the charge of a neutron?___________ Where would you find a neutron in an atom? ____________ ...
Atomic Theory - World of Teaching
... Atoms are NOT the same as molecules. Air and oxygen are NOT the same. Helium and hot air are NOT the same. ...
... Atoms are NOT the same as molecules. Air and oxygen are NOT the same. Helium and hot air are NOT the same. ...
LBC1_Sec3_Unit01_Alchemy
... How can atoms of the same element be different? • Isotopes of an element have the same number of protons and electrons but different numbers of neutrons. • The average atomic mass of an element listed in the periodic table is the weighted average mass of the naturally occurring isotopes of that elem ...
... How can atoms of the same element be different? • Isotopes of an element have the same number of protons and electrons but different numbers of neutrons. • The average atomic mass of an element listed in the periodic table is the weighted average mass of the naturally occurring isotopes of that elem ...
Electrons in Atoms
... The Quantum Mechanical Model • The modern description of the electrons in atoms, the Quantum Mechanical Model, comes from the mathematical solutions to the ...
... The Quantum Mechanical Model • The modern description of the electrons in atoms, the Quantum Mechanical Model, comes from the mathematical solutions to the ...
Unit 3 Atomics Review SCIENTIFIC THEORIES Dalton theorized that
... another in whole number ratios to form compounds but cannot be created or destroyed. Atoms of the same element are identical. Dalton’s model is known as the hard sphere model. a. According to Dalton, what is inside the atom? ____________________________________________ b. What part of Dalton’s theor ...
... another in whole number ratios to form compounds but cannot be created or destroyed. Atoms of the same element are identical. Dalton’s model is known as the hard sphere model. a. According to Dalton, what is inside the atom? ____________________________________________ b. What part of Dalton’s theor ...
E:\My Documents\sch3u\SCH3Ureview.wpd
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
Note taker: ATOMS AND THE PERIODIC TABLE
... Electrons move in patterns of “_______________________________” around the nucleus. ...
... Electrons move in patterns of “_______________________________” around the nucleus. ...
ChemCh4of2011
... Conclusions from the Study of the Electron Cathode rays have identical properties regardless of the element used to produce them. All elements must contain identically charged electrons. Atoms are neutral, so there must be positive particles in the atom to balance the negative charge of the elec ...
... Conclusions from the Study of the Electron Cathode rays have identical properties regardless of the element used to produce them. All elements must contain identically charged electrons. Atoms are neutral, so there must be positive particles in the atom to balance the negative charge of the elec ...
Electron Shells - rlas
... - upwards, downwards, or sideways - electrons can do it. The atomic shell, also called an _________________, is the distance from the nucleus that the electron spins. If you are an electron in the first shell, you are always closer to the nucleus than the electrons in the second shell. Electrons can ...
... - upwards, downwards, or sideways - electrons can do it. The atomic shell, also called an _________________, is the distance from the nucleus that the electron spins. If you are an electron in the first shell, you are always closer to the nucleus than the electrons in the second shell. Electrons can ...