chemistry 9

1. 1-how to calculate protons, neutrons, and electons

1.1. 1-protons- same number as atomic number

1.2. 1-neutrons- atomic mass- atomic number

1.3. 1-electrons-atomic number unless it is charge

2. 9-naming rules for multivalent compounds

2.1. 9-Use roman numerals when naming compounds if the periodic table lists more than one charge. Add -ide to the end of the final element.

3. 2-what is the atomic mass

3.1. 2-the mass of an atom of a chemical element expressed in atomic mass units

4. 4-what does charge do to an atom

4.1. 4-A charge makes it an ion.

5. 5-what is a covalent compound

5.1. 5-A covalent compound is a compound in which the atoms that are bonded share electrons rather than transfer electrons from one to the other

6. 3-what is the atomic number

6.1. 3-the number of protons found in an atom

7. 6-what is an ionic compounds

7.1. 6-ionic compounds are made up of a metal and non-metal

8. 8-naming rules for polyatomic compounds

8.1. 8-the positive ion is written first, followed by the negative ion

9. 7-naming rules for ionic compounds

9.1. There are different types of ionic compounds, but the general rules in naming them are: •Identify and name the cation •Identify and name the anion

10. 10-naming rules for covalent compunds

10.1. 10-covalent compounds are generally named by using prefixes to indicate how many atoms of each element are shown in the formula.