States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
![**Understanding Formal Charges in Molecular Structures**
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**Instruction:**
What is the formal charge on each indicated atom? Write your answer on the line below the molecule.
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**Molecular Structures:**
1. **First Molecule:**
- Structure: The molecule shown has nitrogen (N) double bonded to an oxygen (O), which is single bonded to another oxygen (O) with a negative charge.
- Atoms: N, O (single-bonded with a negative charge), and O (double-bonded).
2. **Second Molecule:**
- Structure: Phosphorus (P) is in the center, bonded to three oxygens (O). Each oxygen atom has different bonding configurations: one double bonded and one single bonded with a negative charge.
- Atoms: P, O (single-bonded with a negative charge), and O (double-bonded).
3. **Third Molecule:**
- Structure: Oxygen (O) double bonded to carbon (C), with another oxygen (O) single bonded and having a negative charge.
- Atoms: O (single-bonded with a negative charge).
4. **Fourth Molecule:**
- Structure: A tetrahedral silicon (Si) atom bonded to four hydrogen (H) atoms.
- Atoms: Si.
5. **Fifth Molecule:**
- Structure: Boron (B) bonded to five hydrogen (H) atoms and a single bromine (Br) atom.
- Atoms: B.
6. **Sixth Molecule:**
- Structure: A central sulfur (S) atom bonded with two oxygens (O) and one hydrogen (H). The oxygen atoms have different bonding configurations: one double bonded and one single bonded with a single hydrogen.
- Atoms: S, O (connected to H).
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**Formal Charges to be Determined for Each Atom**
- N: _______
- P: _______
- O: _______
- Si: _______
- B: _______
Additional Question:
- What is the sum of the formal charges on this ion? _______
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**Explanation of the Formal Charge Calculation:**
To determine the formal charge on an atom within a molecule, use the following formula:
**Formal Charge (FC) = (Valence electrons) - (Non-bonding electrons) - (Bonding electrons / 2)**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20deeb5a-c7fd-4455-8f25-e35ace87a2f9%2Fa371948f-0d44-4dc9-96b5-f503ff8c731a%2Fvj5ggd_processed.jpeg&w=3840&q=75)
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