Unit 3 - Matter / P vs. C Changes / Naming

Introduction:

Unit 3 concerns descriptions and properties of matter. We will spend time looking at physical vs. chemical changes and properties, mixtures vs. pure substances, elements vs. compounds and characteristics of a chemical reaction. Chapter 3 makes up most of unit 3 although we will also look at naming ionic and covalent compounds and naming acids from chapters 7 and 8.

Big Ideas:

- Everything is made of matter.

Main Ideas:

- Most common substances exist as solids, liquids and gases, which have diverse physical and chemical properties.

- Matter can undergo physical and chemical changes.

- Most everyday matter occurs as mixtures--combinations of two or more substances.

- A compound is a combination of two or more elements.

- In written names and formulas for ionic compounds, the cation appears first, followed by the anion.

- Specific rules are used when naming binary molecular compounds, binary acids and oxyacids.

Ohio Department of Education - Chemistry Standards:

Representing Compounds:

Using the periodic table, formulas of ionic compounds containing specific elements can be predicted. This can include ionic compounds made up of elements from groups 1, 2, 17, hydrogen and oxygen and polyatomic ions if given the formula and charge of the polyatomic ion. Given the formula, a compound can be named using conventional systems that include Greek prefixes and Roman numerals where appropriate. Given the name of an ionic or covalent substance, formulas can be written.

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