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Flashcards do conjunto (14)
- 1Atomic Structure ~ 1- The Nucleus.
-The Electrons.
-No. of Protons are equal to the electron no.
- Elements consist of only one type of atom. - 2Atomic Structure ~ 2- The Periodic Table.
- Electron Shells.
- Compounds.
- Balancing Equations. - 3The Nucleus ~ 11. It is in the middle of the atom.
2. It contains protons and neutrons.
3. Protons are positively charged.
4. Neutrons have no charge. - 4The Nucleus ~ 25. This means the nucleus overall is positively charged.
6. But for size, it is tiny compared to the rest of the atom. - 5The Electrons1. Move around the nucleus.
2. They are negatively charged.
3. They are tiny but they cover a lot of space.
4.They occupy shells around the nucleus. - 6No. of Protons is Equal the No. of Electrons ~ 11. Atoms have no charge overall so they are neutral.
2. The charge on the electron is equal to the charge on the proton. - 7No. of Protons is Equal the No. of Electrons ~ 23. This means the no. of protons are equal to the no. of neutrons.
4. If some electrons get added or removed, the atoms become charged, it is a ion. - 8Elements Consist of only One type of atom ~ 11. Atoms can have different no. of protons, neutrons, electrons.
2. The no. of atoms in the nucleus decide what type of atom it is. - 9Elements Consist of only One type of atom ~ 23. For example, an atom with one proton is Hydrogen and with twenty is Calcium.
4. If a substance contains only one type of atom it is know as an element. - 10The Periodic Table ~ 11. Atoms can be represented by, for example Na is sodium because it comes from Latin and H is simply Hydrogen using the first letter of the element.
- 11The Periodic Table ~ 22. Each column in the periodic table is where the elements are similar in properties.
3. Each group apart from group eight are unstable atoms. - 12The Periodic Table ~ 34. Each row is a period and is a continuation of just the atomic no. of the elements.
5. A line in the periodic table separates the metals from the non-metal. - 13Electron Shells ~ 11. Electrons only occupy shells, only certain amounts of electrons are allowed per shell.
2. The lower energy shells are closest to the nucleus are filled first. - 14Electron Shells ~ 23. In the first shell only two electrons are permitted and the rest eight are permitted.
4. Atoms are only stable if shells are filled completely with two then eight then eight.
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- FlashCards sobre Sem título, criado por WS14 em 26-05-2014.
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