Valence Electrons, Atomic Mass, and Isotopes
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Learn and review Valence Electrons, Atomic Mass, and Isotopes
Topics of this game:
- Learn: Valence Electrons. An atom's electrons are not actually just floating around, they are instead organized into shells. These shells hold a specific number of electrons. The valence Electrons are simply the electrons in an atoms outer most shell. On some periodic tables, the electron shells are listed on the right of the elements box, the final number is the number of valence electrons.
- Review: What are Valence Electrons?
- Learn: Isotopes. An Element is made up of a specific atom, BUT that specific atom might not always be the same. Atoms can have what are called Isotopes, and they are just different species of the same atom. It's like how a dog has different breeds, they are are still dogs. This is like an Isotope. An isotope of an atom still forms the same Element, it's just a bit different than the normal atom for that element.
- Learn: It is important to know that an Isotope NEVER CHANGES THE NUMBER OF PROTONS AND ELECTRONS, it only changes the number of NEUTRONS an atom has. Elements all have isotopes, some of them are more common though. To determine the most common Isotope for an Element, you look at the number at the bottom of the elements box, and round to the nearest whole number. This will give you your most common isotope. For example Carbons most common Isotope is Carbon 12. (6 Neutrons 6 Protons)
- Review: What is an isotope?
- Learn: Atomic Mass is the total mass an atom takes up. It is what you get when you add the Atom Neutrons and Protons together. It is the number at the bottom of an elements box. For example, Carbons atomic mass is 12.011.
- Review: What is atomic mass?
- Question: What makes up atomic mass?
- Question: Argon's Atomic mass is 39.948. What is its most common Isotope?
- Question: How many valence electrons does hydrogen have? (Hint Hydrogen has 1 Electron)
