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Questions and Answers
Which of the following is true about a chemical formula?
Which of the following is true about a chemical formula?
- It can specify the structure of complex molecules
- It contains words that describe the chemical compound
- It is the same as a full chemical structural formula
- It uses chemical element symbols and numbers (correct)
What symbols can be used in a chemical formula?
What symbols can be used in a chemical formula?
- Letters and numbers only
- Parentheses and dashes only
- Brackets and commas only
- All of the above (correct)
What is the difference between a chemical formula and a chemical name?
What is the difference between a chemical formula and a chemical name?
- A chemical formula contains words, while a chemical name does not
- A chemical formula uses symbols and numbers, while a chemical name does not (correct)
- A chemical formula and a chemical name are the same thing
- A chemical formula fully specifies the structure of complex molecules, while a chemical name does not
What is the most basic type of chemical formula?
What is the most basic type of chemical formula?
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What can a chemical formula fully specify the structure of?
What can a chemical formula fully specify the structure of?
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Study Notes
Chemical Formula Basics
- A chemical formula is a concise way to express the composition of a molecule using symbols and numbers.
Symbols in a Chemical Formula
- Element symbols (e.g., H, C, O) can be used in a chemical formula.
- Numerical subscripts can be used to indicate the number of atoms of an element in a molecule.
- Parentheses can be used to group atoms in a chemical formula.
Chemical Formula vs. Chemical Name
- A chemical formula represents the composition of a molecule using symbols and numbers.
- A chemical name is a unique name assigned to a molecule, often based on its chemical structure.
Types of Chemical Formulas
- The most basic type of chemical formula is the empirical formula, which shows the simplest whole-number ratio of atoms in a molecule.
- A molecular formula specifies the actual number of atoms of each element in a molecule.
Structure Specification
- A chemical formula can fully specify the structure of a molecule, including the arrangement of atoms and bonds.
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