Understanding The Chemistry Of Atoms to Ions
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An ion is an atom or molecule which has lost or gained one or more valence electrons, giving it a positive or negative electrical charge Ions are formed by the loss or gain of electrons by single atoms or groups of atoms. This presentation was put together by Ivan Ukiwah.
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Understanding The Chemistry Of Atoms to Ions
- 1. UNDERSTANDING THE CHEMISTRY OF ATOMS TO IONS www.sciencetutors.zoomshare.com
- 3. ATOMS TO IONS www.sciencetutors.zoomshare.com
- 4. What is an ATOM? An ATOM is the smallest component of an element having the chemical properties of the element www.sciencetutors.zoomshare.com
- 5. Definition of a Neutral Atom An atom with an equal number of protons and electrons is electrically neutral. No. of Proton(+) = No. of Electron (-) (+ ve charge will neutralize – ve charge) if they are equal. www.sciencetutors.zoomshare.com
- 6. Definition of a Neutral Atom No. of Proton(+) = No. of Electron (-) (+ ve charge will neutralize – ve charge) if they are equal . www.sciencetutors.zoomshare.com
- 7. Example of Neutral Atoms These atoms are electrically neutral because they have equal number of protons and electrons. www.sciencetutors.zoomshare.com ATOM Atomic No. No. Of Proton No. Of Electron Sodium 11 11 11 Potassium 19 19 19 Chlorine 17 17 17 Calcium 20 20 20
- 8. Electron Configuration Electron configuration shows how the electrons are distributed among various atomic orbital of atoms and ions. OR The arrangement of electrons in an atom. www.sciencetutors.zoomshare.com
- 9. What is an Ion? An ion is an atom or molecule which has lost or gained one or more valence electrons, giving it a positive or negative electrical charge www.sciencetutors.zoomshare.com
- 10. Atoms to Ions Ions are formed by the loss or gain of electrons by single atoms or groups of atoms. www.sciencetutors.zoomshare.com
- 11. Valence Electrons A Valence electron is an electron in the outer shell of an atom which can combine with other atoms to form molecules Copy and complete the table shown below www.sciencetutors.zoomshare.com Element Atomic Number Configuration Valence Sodium 11 Chlorine 17 Magnesium 12 Phosphorus 15
- 12. Electron Gain or Loss Ions are formed when electrons are gained on transferred (lost) www.sciencetutors.zoomshare.com Atom Atomic No. Electron Configuration Electron Gain/Loss Positive Ion Negative Ion Sodium 11 2, 8, 1 Loss = 1 Na+ Potassium 19 2, 8, 8, 1 Loss = 1 K+ Chlorine 17 2, 8, 7 Gain = 1 Cl - Fluorine 9 2, 7 Gain = 1 F-
- 14. IONIC COMPOUNDS Chemical compounds that consist of charged positive and negative ions (opposite charges +ve and –ve) OR An ionic compound is a chemical compound in which positive and negative ions are held together in a lattice structure by ionic bonds. www.sciencetutors.zoomshare.com
- 15. TASK 2 Make a list of all ionic compounds you have studied. www.sciencetutors.zoomshare.com
- 16. Explain why ionic compounds are generally solids with high melting points and conduct electricity. www.sciencetutors.zoomshare.com
- 18. UNDERSTANDING THE CHEMISTRY OF ATOMS TO IONS www.sciencetutors.zoomshare.com
- 19. Visit www.sciencetutors.zoomshare.com for more science resources