Representing an Atom (Atoms, Molecules, and Ions)

Chemistry

1. ATOMS, MOLECULES, AND IONS REPRESENTING AN ATOM Number of protons and electrons Sum of the number of protons and neutrons

2. ATOMS, MOLECULES, AND IONS REPRESENTING AN ATOM Number of protons and electrons Sum of the number of protons and neutrons Atomic Number Atomic Weight # of Protons # of Electrons # of Neutrons 6 12 6 6 6 Number of Protons = Atomic Number Number of Electrons = Atomic Number Number of Neutrons = Atomic Number – Atomic Weight

3. ATOMS, MOLECULES, AND IONS REPRESENTING AN ATOM Number of protons and electrons Sum of the number of protons and neutrons Atomic Number Atomic Weight # of Protons # of Electrons # of Neutrons 17 35 17 17 18 Number of Protons = Atomic Number Number of Electrons = Atomic Number Number of Neutrons = Atomic Number – Atomic Weight

4. ATOMS, MOLECULES, AND IONS REPRESENTING AN ATOM ATOMIC NUMBER ATOMIC WEIGHT # OF PROTONS # OF ELECTRONS # OF NEUTRONS NAME OF ELEMENT 4 9 14 28 8 8 11 12 52 24 19 20 Beryllium Silicon Oxygen Sodium Chromium Potassium

5. NAMING COMPOUNDS

6. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals.

7. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals.

8. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals. NaCl Rules: • Name the Metal First: keeps its name as on periodic table • Name the Non-Metal Second: change ending to -ide

9. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals. Rules: • Name the Metal First: keeps its name as on periodic table • Name the Non-Metal Second: change ending to -ide

10. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals. Fe ₂ O Rules: Name the Metal First: keeps its name as on periodic table Name the Non-Metal Second: change ending to –ide For Transition Metals: use Roman numerals to indicate charge

11. Naming Ionic Compounds Ionic compounds are formed between metals and non-metals. Rules: Name the Metal First: keeps its name as on periodic table Name the Non-Metal Second: change ending to –ide For Transition Metals: use Roman numerals to indicate charge

12. Naming Covalent Compounds Ionic compounds are formed between non-metals and non-metals.

13. Naming Covalent Compounds Covalent compounds are formed between non-metals and non-metals. N₂O₃ Use prefixes to indicate number of atoms First element: keeps its name Second element: ends in -ide

14. Naming Covalent Compounds Covalent compounds are formed between non-metals and non-metals. Use prefixes to indicate number of atoms First element: keeps its name Second element: ends in -ide

15. Naming Acids (Binary Acids/ Acids without oxygen) Acids release H⁺ ions in water HCl Use prefixes hydro- Name the non-metal element and change it’s suffix to – ic and add acid

16. Naming Acids (Binary Acids/ Acids without oxygen) Acids release H⁺ ions in water Use prefixes hydro- Name the non-metal element and change it’s suffix to – ic and add acid

17. Naming Acids ( Oxyacids / Acids with oxygen) Acids release H⁺ ions in water H₂SO₄ → Sulfate H₂SO₃ → Sulfite Anion ends in -ate → change to - ic acid Anion ends in - ite → change to - ous acid

18. Naming Acids ( Oxyacids / Acids with oxygen) Acids release H⁺ ions in water Anion ends in -ate → change to - ic acid Anion ends in - ite → change to - ous acid

19. Naming Bases Bases release OH⁻ ions in water NaOH Name the cation (metal) first Add 'hydroxide' for the anion

20. Naming Bases Bases release OH⁻ ions in water Name the cation (metal) first Add 'hydroxide' for the anion