Flashcards
Atomic Structure
Flashcards do conjunto (10)
- 1What is the mass of an atom?The mass of an atom is the total number of protons and neutrons it contains.
- 2What is an Isotope?Isotopes are atoms of an element that contain different amounts of neutrons
- 3Is the mass number smaller or bigger than the atomic number?The mass number of an atom is never smaller than the atomic number but can be the same
- 4What is an atomic number?The atomic number of an element s the number of protons and electrons it contains
- 5Where is the atomic and mass number on a chemical symbol?The mass number is at the top and the atomic number is at the bottom.
- 6What is an atom with a full outer shell?The atom is stable and so will not react with anything.
- 7Why do atoms react with other atoms.Because they are unstable as they do not have full outer shells and want to have full outer shells.
A full shell is a happy shell! - 8What is an electron strucutre?An electron structure is the number of electrons in each shell shown in order. e.g 2,8,1 for potassium
- 9What is the number of shells in an atom the same as?The number of shells in an atom is the same as the period it is in. e.g. Lithium is in period 2 so it has 2 shells of electrons
- 10What is the number of electrons in the final outer shell of an element the same as?The amount of electrons in the outer shell of an atom is the same as the group number it is in. (this has an exception of helium which has only 2 electrons and is in group 0 a.k..a. group 8, the rest in that group do have 8 electrons in the outer shell)
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- Descrição
- GCSE Chemistry FlashCards sobre Atomic Structure, criado por Meriel ... em 14-03-2016.
- Criado por
- Meriel ...
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