CK-12 Physical Science Concepts - For Middle School

2.42. Bohr’s Atomic Model http://www.ck12.org 2.42 Bohr’s Atomic Model Describe how Bohr modified Rutherford’s atomic model. Ex ...

http://www.ck12.org Chapter 2. Matter Although later scientists would develop more refined atomic models, Bohr’s model was basic ...

2.42. Bohr’s Atomic Model http://www.ck12.org FIGURE 2.81 This is a two-dimensional model of a three-dimensional atom. The conce ...

http://www.ck12.org Chapter 2. Matter Review How does Bohr’s atomic model build on Rutherford’s model? Explain the connection b ...

2.43. Energy Level http://www.ck12.org 2.43 Energy Level Describe energy levels. Relate energy levels to orbitals. Explain the ...

http://www.ck12.org Chapter 2. Matter FIGURE 2.82 Q:In the atomic modelFigure2.82, where would you find electrons that have the ...

2.43. Energy Level http://www.ck12.org level. The animation below shows the electrons in the first two energy levels for an atom ...

http://www.ck12.org Chapter 2. Matter FIGURE 2.85 Electrons are always added to the lowest energy level first until it has the ...

2.43. Energy Level http://www.ck12.org What must happen for an electron to jump to a different energy level? How many electrons ...

http://www.ck12.org Chapter 2. Matter 2.44 Electron Cloud Atomic Model State the main limitation of Bohr’s atomic model. Descri ...

2.44. Electron Cloud Atomic Model http://www.ck12.org FIGURE 2.86 A:You can’t specify the exact location of an electron. However ...

http://www.ck12.org Chapter 2. Matter A Fuzzy Cloud Schrödinger’s work on orbitals is the basis of the modern model of the atom, ...

2.44. Electron Cloud Atomic Model http://www.ck12.org Vocabulary electron cloud: Area surrounding the nucleus of an atom where ...

http://www.ck12.org Chapter 2. Matter 2.45 Mendeleev’s Periodic Table State how Mendeleev developed his periodic table of the e ...

2.45. Mendeleev’s Periodic Table http://www.ck12.org FIGURE 2.89 the elements, similar to a deck of playing cards. On each card, ...

http://www.ck12.org Chapter 2. Matter the moon’s phases repeat every four weeks. In a periodic table of the elements, theperiods ...

2.46. Modern Periodic Table http://www.ck12.org 2.46 Modern Periodic Table Describe the modern periodic table of the elements. ...

http://www.ck12.org Chapter 2. Matter and this number is unique for each element. The modern table has more elements than Mendel ...

2.46. Modern Periodic Table http://www.ck12.org Periods of the Modern Periodic Table Rows of the modern periodic table are calle ...

http://www.ck12.org Chapter 2. Matter table above, elements are color coded to show their class. As you move from left to right ...