DebiloooooooGot it 👍 I’ll put together class-style chemistry notes that you can use
for studying. Since chemistry is broad, I’ll make a general starter pack (good for
school-level notes). You can tell me if you want them focused on a specific topic (like
atoms, periodic table, bonding, organic chemistry, etc.).
📘 Chemistry Class Notes
1. Introduction to Chemistry
Definition: Chemistry is the study of matter, its properties, composition, and
the changes it undergoes.
Branches of Chemistry:
1.
Organic Chemistry → study of carbon compounds.
2.
3.
Inorganic Chemistry → study of metals, salts, and minerals.
4.
5.
Physical Chemistry → deals with energy changes and reaction rates.
6.
7.
Analytical Chemistry → methods to identify substances.
8.
9.
Biochemistry → chemistry of living organisms.
10.
2. Matter & Its States
Matter: Anything that has mass and occupies space.
States of Matter:
o
Solid → fixed shape and volume.
o
o
Liquid → fixed volume, no fixed shape.
o
o
Gas → neither fixed volume nor shape.
o
o
Plasma & BEC (advanced states).
o
Physical vs. Chemical Properties:
Physical: color, density, melting point, boiling point.
o
o
Chemical: flammability, reactivity with acids, rusting.
o
3. Atomic Structure
Atom: Basic unit of matter.
Subatomic Particles:
Proton → positive charge, inside nucleus.
o
o
Neutron → neutral, inside nucleus.
o
o
Electron → negative charge, orbits nucleus.
Atomic Number (Z) = number of protons.
Mass Number (A) = protons + neutrons.
Isotopes: Atoms of same element with different neutrons.
4. Periodic Table
Organized by increasing atomic number.
Groups (columns) → elements with similar properties.
Periods (rows) → elements with same number of electron shells.
Metals, Nonmetals, Metalloids classification.
Trends:
Atomic radius ↓ across a period, ↑ down a group.
o
o
Ionization energy ↑ across, ↓ down.
o
o
Electronegativity ↑ across, ↓ down.
5. Chemical Bonding
Ionic Bond → transfer of electrons (metal + nonmetal).
Covalent Bond → sharing of electrons (nonmetal + nonmetal).
Metallic Bond → “sea of electrons” in metals.
Polarity → unequal sharing of electrons → polar & nonpolar molecules.
6. Chemical Reactions
Types of Reactions:
1.
Combination (A + B → AB)
2.
3.
Decomposition (AB → A + B)
4.
5.
Displacement (A + BC → AC + B)
6.
7.
Double Displacement (AB + CD → AD + CB)
8.
9.
Combustion (fuel + O₂ → CO₂ + H₂O + energy)
10.
Got it 👍 I’ll put together class-style chemistry notes that you can use for studying.
Since chemistry is broad, I’ll make a general starter pack (good for school-level
notes). You can tell me if you want them focused on a specific topic (like atoms,
periodic table, bonding, organic chemistry, etc.).
📘 Chemistry Class Notes
1. Introduction to Chemistry
Definition: Chemistry is the study of matter, its properties, composition, and
the changes it undergoes.
Branches of Chemistry:
1.
Organic Chemistry → study of carbon compounds.
2.
3.
Inorganic Chemistry → study of metals, salts, and minerals.
4.
5.
Physical Chemistry → deals with energy changes and reaction rates.
6.
7.
Analytical Chemistry → methods to identify substances.
8.
9.
Biochemistry → chemistry of living organisms.
10.
2. Matter & Its States
Matter: Anything that has mass and occupies space.
States of Matter:
o
Solid → fixed shape and volume.
o
o
Liquid → fixed volume, no fixed shape.
o
o
Gas → neither fixed volume nor shape.
o
o
Plasma & BEC (advanced states).
o
Physical vs. Chemical Properties:
Physical: color, density, melting point, boiling point.
o
o
Chemical: flammability, reactivity with acids, rusting.
3. Atomic Structure
Atom: Basic unit of matter.
Subatomic Particles:
Proton → positive charge, inside nucleus.
o
o
Neutron → neutral, inside nucleus.
o
o
Electron → negative charge, orbits nucleus.
Atomic Number (Z) = number of protons.
Mass Number (A) = protons + neutrons.
Isotopes: Atoms of same element with different neutrons.
4. Periodic Table
Organized by increasing atomic number.
Groups (columns) → elements with similar properties.
Periods (rows) → elements with same number of electron shells.
Metals, Nonmetals, Metalloids classification.
Trends:
Atomic radius ↓ across a period, ↑ down a group.
o
o
Ionization energy ↑ across, ↓ down.
o
o
Electronegativity ↑ across, ↓ down.
5. Chemical Bonding
Ionic Bond → transfer of electrons (metal + nonmetal).
Covalent Bond → sharing of electrons (nonmetal + nonmetal).
Metallic Bond → “sea of electrons” in metals.
Polarity → unequal sharing of electrons → polar & nonpolar molecules.
6. Chemical Reactions
Types of Reactions:
1.
Combination (A + B → AB)
2.
3.
Decomposition (AB → A + B)
4.
5.
Displacement (A + BC → AC + B)
6.
7.
Double Displacement (AB + CD → AD + CB)
8.
9.
Combustion (fuel + O₂ → CO₂ + H₂O + energy)
10.
