Matter

Note that while atoms are often drawn with the electrons orbiting like planets, as in the first image above, they actually exist in a cloud, as in the second image above.

Match the following

One particle of table salt (NaCl) is best described as a (a)   .

Match the following

Throughout history, scientists have tried to determine the shape and layout of an atom. It began when John Dalton theorized that atoms were ____.

Throughout history, scientists have tried to determine the shape and layout of an atom. It began when John Dalton theorized that atoms were spheres. Then J.J. Thompson created the ​ (a)   where the atom was similar to plum pudding in that it was ​ (b)   , but the protons, neutrons and electrons were floating in the sphere like the fruits in the pudding

Throughout history, scientists have tried to determine the shape and layout of an atom. It began when John Dalton theorized that atoms were spheres. Then J.J. Thompson created the Plum Pudding Theory where the atom was similar to plum pudding in that it was spherical, but the protons, neutrons and electrons were floating in the sphere like the fruits in the pudding. Then Rutherford identified the nucleus and the ​ (a)   was created. Niels Bohr modified Rutherford's theory to include​ (b)   . This model is most commonly used for drawing atoms. The Quantum Model by Schrodinger is the accepted model by scientists today as electrons move in waves around the nucleus rather than fixed orbitals.