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Copy of 5th Grade Lesson Plan
Transcript of Copy of 5th Grade Lesson Plan
Atoms and Elements What is an Atom? An atom is the smallest thing in the universe and it makes up everything. Atoms are made up of protons, neutrons, and electrons. What is an Element? An element is an atom. To find what type of element an atom is, count the number of protons. Protons are positive Neutrons are neutral Electrons are negative and circle around the nucleus. This is the latest version of what we think an element looks like. It's called the cloud model where there are levels of electrons called energy levels. How is this connected to the periodic table? The periodic table IS elements. It is organized by amount of protons, and the reactivity. First you have alkali metals, the most reactive metals. These are metals with only one electron in their outer shell so they want to combine as quickly as they can with other elements. It will be in orange. Next, we have the alkaline earth metals. These are the second most reactive group of elements in the table. These react with water by bubbling, just like alkali metals. The color for this is yellow Vertical rows are groups and horizontal rows are called periods. Now you have transition metals. Transition metals are the most metallic metals that have greater densities than alkali, and alkaline earth metals. The transition metals are alloys and that means they are good for making tools.These will be violet. After that, you have rare earth metals. These are unstable isotopes (have a different number of protons and neutrons) and are very hard to find. This is going to be turquoise. Now you have other metals and metalloids but these are important. For example, carbon is the best at bonding and we need oxygen to live. These elements will be in green. Next comes the noble gasses. These are atoms that will not bond with other atoms. These will be shown in dark blue. Finally there is hydrogen. This atom is the atom that has the sun burning through atomic explosions. It is the only gas on the left side of the periodic table. In the bottom two rows, there are too many extra elements that fit in period 6 and 7 and group IB, so they stick it in the bottom The center
of the atom