Chemical Bond
Also known as: bond
A lasting force of attraction between atoms that holds them together in molecules, compounds, or crystal lattices, formed when atoms share electrons (covalent bond), transfer electrons (ionic bond), or pool electrons in a metallic sea (metallic bond). Chemical bonds determine every physical and chemical property of a substance: its melting point, hardness, conductivity, and reactivity.
💡 Intuition
The 'glue' that holds atoms together, made by sharing or transferring electrons.
Core Idea
Bonds form because atoms are more stable with certain electron arrangements.
Formal View
🔬 Example
🎯 Why It Matters
Chemical bonds determine every physical and chemical property of a substance: its melting point, hardness, conductivity, and reactivity. Understanding bonds explains why diamond is hard (strong covalent network), why metals conduct electricity (metallic bonds), and why salt dissolves in water (ionic bonds break apart).
⚠️ Common Confusion
Breaking bonds requires energy; forming bonds releases energy.
How to Use Chemical Bond
When this concept appears in chemistry, it usually controls how you interpret a representation, a quantity, or a change in a system. Students make faster progress when they can explain what chemical bond tells them before reaching for an equation or memorized phrase.
A strong self-check is to say what chemical bond does, what it does not do, and which nearby idea it is easiest to confuse with. That kind of explanation makes later calculations, lab reasoning, and compare pages much more reliable.
💭 Hint When Stuck
When identifying bond types, look at the atoms involved. First check if it is between a metal and nonmetal (likely ionic). Then check if it is between two nonmetals (likely covalent). Finally, determine if the electronegativity difference is large (>1.7 = ionic), medium (0.4-1.7 = polar covalent), or small (<0.4 = nonpolar covalent).
Related Concepts
Prerequisites
Next Steps
How Chemical Bond Connects to Other Ideas
To understand chemical bond, you should first be comfortable with electron and valence electron. Once you have a solid grasp of chemical bond, you can move on to ionic bond and covalent bond.
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Frequently Asked Questions
What is Chemical Bond in Chemistry?
A lasting force of attraction between atoms that holds them together in molecules, compounds, or crystal lattices, formed when atoms share electrons (covalent bond), transfer electrons (ionic bond), or pool electrons in a metallic sea (metallic bond).
Why is Chemical Bond important?
Chemical bonds determine every physical and chemical property of a substance: its melting point, hardness, conductivity, and reactivity. Understanding bonds explains why diamond is hard (strong covalent network), why metals conduct electricity (metallic bonds), and why salt dissolves in water (ionic bonds break apart).
What do students usually get wrong about Chemical Bond?
Breaking bonds requires energy; forming bonds releases energy.
What should I learn before Chemical Bond?
Before studying Chemical Bond, you should understand: electron, valence electron.