PICLEC: MODULE 1
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The science that describes matter—its properties, the changes it undergoes, and the energy changes that accompany those processes
CHEMISTRY
The CENTRAL SCIENCE
CHEMISTRY
Branches of Chemistry
• ORGANIC CHEMISTRY • INORGANIC CHEMISTRY • ANALYTICAL CHEMISTRY • BIOCHEMISTRY • PHYSICAL CHEMISTRY
BRANCH OF CHEMISTRY - Hydrocarbons and its derivatives
ORGANIC CHEMISTRY
BRANCH OF CHEMISTRY - Inorganic compounds, metals, minerals
INORGANIC CHEMISTRY
BRANCH OF CHEMISTRY - Detection and identification of substances present (qualitative analysis) or amount of each substance (quantitative analysis)
ANALYTICAL CHEMISTRY
BRANCH OF CHEMISTRY - Processes in living organisms
BIOCHEMISTRY
BRANCH OF CHEMISTRY - Behavior of matter
PHYSICAL CHEMISTRY
Anything that has mass and occupies space; is tangible
MATTER
Measure of the quantity of matter
MASS
Amount of space
VOLUME
The capacity to do work or to transfer heat
ENERGY
TYPES OF ENERGY:
• KINETIC ENERGY • POTENTIAL ENERGY
TYPES OF ENERGY - Energy in motion
KINETIC ENERGY
TYPES OF ENERGY - Energy at rest
POTENTIAL ENERGY
ENERGY CHANGES:
• EXOTHERMIC • ENDOTHERMIC
ENERGY CHANGES - Release (heat)
EXOTHERMIC
ENERGY CHANGES - Absorbs (heat)
ENDOTHERMIC
STATES OF MATTER
• SOLID • LIQUID • GAS
STATES OF MATTER - Molecules packed close together orderly; Rigid
SOLID
STATES OF MATTER - Molecules are close but randomly arranged; Flows and assumes shape of container
LIQUID
STATES OF MATTER - Molecules are far apart; Fills any container completely
GAS
CHANGES OF STATES
S - L = MELTING L - S = FREEZING L - G = BOILING G - L = CONDENSATION G - S = DEPOSITION S - G = SUBLIMATION
Can be observed or measured without changing the identity of the substance. e.g. color, hardness, melting point, boiling point
PHYSICAL PROPERTIES