Worksheet 6.3 Naming Compounds & Writing Formulas

Worksheet 6.3 Naming Compounds & Writing Formulas – Naming of compounds is a fundamental idea in chemistry. It involves giving a unique name to the chemical compound on the basis of its composition. In addition, the name assigned to the compound is a crucial indicator of the properties and structure of the compound. There are many kinds of chemical compounds, including those with ionic properties, covalent compound, as well as binary compound.

Naming Ionic Compounds

The Ionic compound is formed by transfers of electrons across atoms. They consist of positively charged cations as well as negatively charged anion. The rules for naming ionic compounds are as these:

1. Enter the name of the cation first, followed by that of the anion.
2. If the cation contains more than one possible charge identify the charge by using Roman numbers in parentheses.
3. The anion must be a polyatomic Ion, choose the name of the anion.

Examples:

• NaCl is a common name for sodium chloride.
• FeCl3 is named iron(III) chloride.
• Mg(NO3)2 is known under the name magnesium nitrate.

Naming Covalent Compounds

They are created by sharing electrons among atoms. They are made up of molecules composed from two or more atoms. The guidelines for naming compounds that are covalent are as below:

1. Then write the name of first element of the formula.
2. Write the name of the second element in the formula, changing the end“-ide. “-ide”.
3. Use prefixes for the amount of atoms found in each element in the molecule. This is not the case for using the suffix “mono-” for the first element.

Examples:

• CO2 is also known as carbon dioxide.
• N2O is named dinitrogen monoxide.
• So, SF6 is a sulfur hexafluoride.

Naming Binary Compounds

Binary compounds are compounds made up of two elements. The rules for the name of binary compounds are these:

1. Write the name and the first element in the formula.
2. Enter in the first element’s name in the formula, changing the end“ide “-ide”.

Examples:

• HCl is named hydrogen chloride.
• CO is also known as carbon monoxide.
• CaO is the name given to calcium oxide.

Practice Exercises

To further reinforce the learning this worksheet will offer activities for practicing naming ionic components, covalent compounds including binary ones. These exercises can help students achieve a good understanding of what rules are used for naming chemical compounds.

Ionic Compound Naming Exercises:

1. Na2S
2. KBr
3. CaF2
4. Al2O3

Covalent Compound Naming Exercises:

1. CO
2. SO2
3. N2O4
4. H2O2

Binary Compound Naming Exercises:

1. Cl2O7
2. P2S5
3. BrF3
4. NO

When they complete these activities, learners will become confident in the identification of chemical compounds, and will be able to apply the rules to other compounds.

Conclusion:

Naming compounds is an important idea in chemistry that requires a solid understanding of these rules as well as guidelines for calling different kinds of compounds. When following the guidelines provided in this worksheet and practicing with the included activities, students are able to quickly identify covalent, ionic, or binary compound. This knowledge is crucial for success in chemistry . It also provides the foundation for future research in the area.

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