Ch 06 - Materials Around Us6th Science
Definition of Matter
What are the two mandatory conditions for an entity to be classified scientifically as 'Matter'?
What are the two mandatory conditions for an entity to be classified scientifically as 'Matter'?
To be classified as matter, an entity must:
- Occupy Space (Volume): It must physically take up room.
- Have Mass: It must contain a measurable quantity of matter.
- Examples: Air, water, wood, humans.
- Non-Examples: Thoughts, light, heat, emotions (these lack mass and volume).
- Contrast: Mass measures the quantity of matter (in kg), while Volume measures the space it occupies (in m3 or L).
Prism Memory Hook
Matter = Mass + Space
States of Matter
What are the three fundamental states of matter, and how do their shape and volume differ?
What are the three fundamental states of matter, and how do their shape and volume differ?
Matter generally exists in three physical states:
- Solid: Has a fixed shape and a fixed volume (e.g., Ice, Wood).
- Liquid: Has a fixed volume but no fixed shape; it takes the shape of its container (e.g., Water, Oil).
- Gas: Has neither a fixed shape nor a fixed volume; it expands to fill its container completely (e.g., Air, Oxygen).
Prism Memory Hook
Solid (Shape & Volume), Liquid (Volume only), Gas (Neither)
Proving Air is Matter
Since air cannot be seen, how can it be scientifically proven that it is 'Matter'?
Since air cannot be seen, how can it be scientifically proven that it is 'Matter'?
Even though air is invisible, it fulfills both conditions of matter:
- Volume: When air is pumped into a balloon or a tyre, it expands, proving that air occupies space.
- Mass: An inflated balloon weighs slightly more than a completely deflated one, proving that air has mass.
Prism Memory Hook
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Also in this chapter
31 more cards to study in Prism
- 4Definition of Mass
- 5Mass vs. Weight
- 6Definition of Volume
- 7Units of Volume
- 8Syntax Rules for SI Units
- 9Material vs. Object
- 10Natural vs. Man-Made Materials
- 11The Purpose of Classification
- 12Scientific Inquiry: Predict, Observe, Record
- 13Material Property: Lustre
- 14Corrosion and Loss of Lustre
- 15Material Property: Hardness
- 16Compressibility & States of Matter
- 17The Relativity of Hardness
- 18Malleability & Ductility
- 19Material Property: Transparency
- 20Material Property: Translucency
- 21Material Property: Solubility in Water
- 22Water: The Universal Solvent
- 23Solubility of Gases
- 24Miscible vs. Immiscible Liquids
- 25Density & Floatation: Oil and Ice
- 26Thermal Conductivity in Daily Life
- 27Electrical Conductivity & Safety
- 28Material Selection: The Tumbler Paradox
- 29Material Elasticity & Sports
- 30Preparing Oral Rehydration Solution (ORS)
- 31Ancient Material Science: Gurvadi Gunas
- 32Material Science in Ancient Pottery
- 33Ancient Metallurgy: The Crucible
- 34Environmental Impact: Biodegradability
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