1. What does the term 'solid' mean in the context of states of matter?
2. Who proposed the principle of buoyancy and around what year?
3. What is the primary role of gas laws in physics?
States of Matter — types?
Solid, liquid, gas, plasma.
Solid state — particle arrangement?
Particles tightly packed in fixed positions.
Liquid state — shape?
No fixed shape; takes container shape.
Gas state — particle movement?
Particles move freely and randomly.
Plasma — characteristics?
Ionized, high temperature, found in stars.
Phase change — energy?
Energy transfer without chemical change.
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