ATOMIC THEORY
... tube. It is a vacuum tube - all the air has been pumped out. Because these rays originate at the ____________________, they are called cathode rays. Thomson concluded that cathode rays are made up of invisible, _________________________ charged particles referred to as electrons. From Thomson’s expe ...
... tube. It is a vacuum tube - all the air has been pumped out. Because these rays originate at the ____________________, they are called cathode rays. Thomson concluded that cathode rays are made up of invisible, _________________________ charged particles referred to as electrons. From Thomson’s expe ...
Nothing exists except atoms and empty space
... 3. Read the attached poem “The Blind Man and the Elephant” by John Godfrey Saxe. a. Why did the blind men have such different impressions of the elephant? b. Why didn’t the blind men look further for the truth? c. Describe a time when you jumped to a conclusion about something and later found out yo ...
... 3. Read the attached poem “The Blind Man and the Elephant” by John Godfrey Saxe. a. Why did the blind men have such different impressions of the elephant? b. Why didn’t the blind men look further for the truth? c. Describe a time when you jumped to a conclusion about something and later found out yo ...
22-Introduction to Radioactivity
... conducting an experiment that models what happens during radioactive decay. Reviewing Some Ideas about Atoms Use your knowledge and information from the textbook to print the best word(s) in each sentence. 1. Atoms are the “basic” particles of chemical ______________________________________. 2. Ther ...
... conducting an experiment that models what happens during radioactive decay. Reviewing Some Ideas about Atoms Use your knowledge and information from the textbook to print the best word(s) in each sentence. 1. Atoms are the “basic” particles of chemical ______________________________________. 2. Ther ...
Semester Exam Practice Questions
... In the modern periodic table, the elements within a column have __________. a. similar electron configurations c. the same number of energy levels b. similar atomic masses d. similar atomic diameters Examine the following electron configuration and choose the correct location of the element it repre ...
... In the modern periodic table, the elements within a column have __________. a. similar electron configurations c. the same number of energy levels b. similar atomic masses d. similar atomic diameters Examine the following electron configuration and choose the correct location of the element it repre ...
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 ...
ISN III: Building Atoms and Organizing Matter
... In other words, what is the most basic particle of matter? The smallest thing? The thing that can’t be broken down any further? We have discovered protons, neutrons and electrons. Great, but scientists weren’t finished yet! In the 1930s, 40s, and 50s nuclear physicists studied the forces that held a ...
... In other words, what is the most basic particle of matter? The smallest thing? The thing that can’t be broken down any further? We have discovered protons, neutrons and electrons. Great, but scientists weren’t finished yet! In the 1930s, 40s, and 50s nuclear physicists studied the forces that held a ...
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 ...
Periodic Table for class
... first periodic table, chemists had discovered all three of the missing elements (scandium, gallium, and germanium), and their properties were very close to what Mendeleev had predicted. ...
... first periodic table, chemists had discovered all three of the missing elements (scandium, gallium, and germanium), and their properties were very close to what Mendeleev had predicted. ...
Section 6.2 Notes - oologah.k12.ok.us
... Dalton’s Atomic Theory 1. All elements are composed of tiny indivisible particles called atoms. 2. Atoms of the same element are identical. The atoms of any one element are different from those of any other element. 3. Atoms of different elements can physically mix together or can chemically combin ...
... Dalton’s Atomic Theory 1. All elements are composed of tiny indivisible particles called atoms. 2. Atoms of the same element are identical. The atoms of any one element are different from those of any other element. 3. Atoms of different elements can physically mix together or can chemically combin ...
Chapter 3
... -3 Important Prop of Solutions 1.part not large enough to be seen 2.part. are evenly spread out(all parts of sol are ident) 3.solution doesn’t settle out of time ...
... -3 Important Prop of Solutions 1.part not large enough to be seen 2.part. are evenly spread out(all parts of sol are ident) 3.solution doesn’t settle out of time ...
Atoms are not the smallest thing
... particles. The first sighting of the electron: a particle much smaller than an atom. ...
... particles. The first sighting of the electron: a particle much smaller than an atom. ...
Looking for Patterns in Chemical Reactivity
... to the energy changes that take place when their atoms lose, gain, or share electrons to obtain a filled valence shell. Metals are elements that tend to lose their valence electrons relatively easily and this accounts for many of their physical and chemical properties. One important property of ...
... to the energy changes that take place when their atoms lose, gain, or share electrons to obtain a filled valence shell. Metals are elements that tend to lose their valence electrons relatively easily and this accounts for many of their physical and chemical properties. One important property of ...
Chapter 4 Packet Chem
... •Distinguish the ground state from excited states of an atom based on electron configurations? ...
... •Distinguish the ground state from excited states of an atom based on electron configurations? ...
Chapter 2: Matter is Made up of Atoms
... • Eugen Goldstein realized there was a second ray in the vacuum tube. – It bent toward the – end of a magnet. – It bent away from the + end of a magnet. – Therefore, this ray was made of _____ charged ...
... • Eugen Goldstein realized there was a second ray in the vacuum tube. – It bent toward the – end of a magnet. – It bent away from the + end of a magnet. – Therefore, this ray was made of _____ charged ...
File - Cynthia Campbell
... Ninety-four are found naturally on Earth, and the rest are synthetic elements that have been produced artificially in particle accelerators. Elements 43 (technetium), 61 (promethium) and all elements greater than 83 (bismuth), beginning with 84 (polonium) have no stable isotopes. The atomic mass of ...
... Ninety-four are found naturally on Earth, and the rest are synthetic elements that have been produced artificially in particle accelerators. Elements 43 (technetium), 61 (promethium) and all elements greater than 83 (bismuth), beginning with 84 (polonium) have no stable isotopes. The atomic mass of ...
Chapter 4 Worksheet 1
... move around the nucleus of an atom I. An atom that has lost or gained electrons ...
... move around the nucleus of an atom I. An atom that has lost or gained electrons ...
Nucleus Protons Neutrons Electron Cloud Electrons
... Isotope – atoms of the same element that have the same number of _______________but a different number of _________________________ Ions – atoms of the same element that have the same number of __________________ but different number of _________________________ ...
... Isotope – atoms of the same element that have the same number of _______________but a different number of _________________________ Ions – atoms of the same element that have the same number of __________________ but different number of _________________________ ...
Atomic Structure and Periodic Table Quick Notes
... See other side for Isotopes and more information Isotopes: these are elements that have abnormal numbers of Neutrons. They tend to be radioactive, and will undergo a radioactive ...
... See other side for Isotopes and more information Isotopes: these are elements that have abnormal numbers of Neutrons. They tend to be radioactive, and will undergo a radioactive ...
chapter 2-1 - Doral Academy Preparatory
... Lewis Dot Structures Diagrams that show the bonding between atoms Represent the valence shell ...
... Lewis Dot Structures Diagrams that show the bonding between atoms Represent the valence shell ...
Test 1 - UTC.edu
... 13. Rutherford's experiment with alpha particle scattering by gold foil established that A) protons weigh the same as electrons. B) protons are concentrated in the center of an atom. C) electrons have a negative charge. D) electrons have a positive charge. E) atoms are made of protons, neutrons, and ...
... 13. Rutherford's experiment with alpha particle scattering by gold foil established that A) protons weigh the same as electrons. B) protons are concentrated in the center of an atom. C) electrons have a negative charge. D) electrons have a positive charge. E) atoms are made of protons, neutrons, and ...
Atomic Theory - Hutchk12.org
... called electrons means that to get a better picture (model, theory, explanation) of atoms, scientists had to admit that atoms had parts and one of these parts were negative particles called ...
... called electrons means that to get a better picture (model, theory, explanation) of atoms, scientists had to admit that atoms had parts and one of these parts were negative particles called ...
atomic - WordPress.com
... received two Nobel Prizes (one for physics and one for chemistry) • She discovered and isolated the radioactive element radium. ...
... received two Nobel Prizes (one for physics and one for chemistry) • She discovered and isolated the radioactive element radium. ...
Slide 1
... neutral species will contain a total of 9 protons and 9 electrons. • However, OH-, contains 10 electrons and the same 9 protons… – Electrons are present in excess; therefore, the species has a (-) charge. The difference is 1 hence the charge is (-1). ...
... neutral species will contain a total of 9 protons and 9 electrons. • However, OH-, contains 10 electrons and the same 9 protons… – Electrons are present in excess; therefore, the species has a (-) charge. The difference is 1 hence the charge is (-1). ...