Naming Polyatomic Compounds Worksheet Answer Key – Naming of compounds is a fundamental concept in chemistry. It is the process of assigning a distinct name to compounds based upon its composition. In addition, the name assigned to the compound can provide important information regarding its properties and the structure. There are many types of chemical compounds. These include chemical compounds that are ionic, covalent, and even binary compounds.
Naming Ionic Compounds
Ionic compounds are produced by the transfer of electrons between atoms. They are composed in positively charged caustics as well as negatively charged anions. The criteria for naming ionic compounds are as like this:
- Write the name of initial cation, followed by it’s anion’s name.
- If the cation has more than one possible charge, indicate the charge using Roman numerals inside parentheses.
- If there is a possibility of polyatomic Ion, make use of the name for the anion.
Examples:
- NaCl is a synonym for sodium chloride.
- FeCl3 is named iron(III) chloride.
- Mg(NO3)2 is also known as magnesium-nitrate.
Naming Covalent Compounds
Compounds that are covalent are formed through the sharing of electrons among atoms. They consist of molecules made by two or more atoms. The guidelines for naming covalent compounds are as in the following order:
- Write the name of the first element of the formula.
- Enter“name” of second component of the formula, changing the end“-ide” to “-ide”.
- Prefixes should be used to indicate number of atoms present in each element in the molecule. There is no prefix for“mono-” which indicates the number of atoms in the molecule “mono-” for the first element.
Examples:
- Carbon dioxide is the name of CO2.
- N2O is named dinitrogen monoxide.
- This is known as sulfur hexafluoride.
Naming Binary Compounds
Binary compounds are made up of two elements. The rules for using the term binary compound are as like:
- Then write the name of first element in the formula.
- Write“Name” for second element in the formula, and change the end in the form of “-ide”.
Examples:
- HCl is named hydrogen chloride.
- CO is the scientific name for carbon monoxide.
- CaO is named calcium oxide.
Practice Exercises
To further reinforce the learning to reinforce the learning, the worksheet will contain practices for naming ionic compound, compounds with covalent bonds along with binary and covalent compounds. These activities will help students get a better understanding of what rules are used for naming chemical compounds.
Ionic Compound Naming Exercises:
- Na2S
- KBr
- CaF2
- Al2O3
Covalent Compound Naming Exercises:
- CO
- SO2
- N2O4
- H2O2
Binary Compound Naming Exercises:
- Cl2O7
- P2S5
- BrF3
- NO
When they complete these activities, students will improve their confidence naming chemical compounds and will be able to apply these rules to other compounds.
Conclusion:
Naming compounds is an essential concept in the field of chemistry. It needs a solid understanding these rules as well as guidelines for Naming different kinds of compounds. Following the guidelines outlined in this worksheet and experimenting with the included activities, students will be able comfortably identify covalent, ionic in addition to binary, compounds. This is a must for achievement in chemistry. It will also provide an excellent foundation for future research in the area.