Another name for relative density is specific gravity. It indicates the relative weight of a substance in relation to water. A material that is heavier than water and has a relative density greater than 1 is likely to sink. It will float if it is less than 1, as it is lighter than water.
Topics
Living World and Classification of Microbes
Health and Diseases
Force and Pressure
Current Electricity and Magnetism
Inside the Atom
Composition of Matter
- Matter (Substance)
- Characteristics of Particles (Molecules) of Matter
- States of Matter
- The Solid State
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- The Gaseous State
- Elements
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- Type of Element: Metalloid
- Compound
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- Mixture
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- Introduction to Solutions
- Suspension Solution
- Colloidal Solution
- Molecular Formula of Compounds
- Periodic Trends in the Modern Periodic Table
Metals and Nonmetals
Pollution
- Pollution
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- Prevention and Control of Air Pollution
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- Laws for Control, Regulation, and Prevention of Pollution by Indian Government
Disaster Management
Cell and Cell Organelles
- Cell: Structural and Functional Unit of Life
- Prokaryotic and Eukaryotic Cell
- Plant Cell Vs Animal Cell
- Cell Organelles
- Structure of the Cell > Cell Wall: “Supporter and Protector”
- Structure of the Cell > Plasma Membrane / Cell Membrane
- Structure of the Cell > Cytoplasm: “Area of Movement”
- Structure of the Cell > Nucleus: “Brain” of the Cell
- Endoplasmic Reticulum (ER)
- Golgi Apparatus - "The delivery system of the cell"
- Lysosome - “Suicidal Bag”
- Mitochondria - “Power House of the Cell”
- Plastids
- Non-living Substances Or Cell Inclusion
Human Body and Organ System
- Human Body
- Human Organ System
- Mechanism of respiration-Breathing
- Human Respiratory System
- Blood Circulatory System
- Human Heart
- Blood Vessels
- Circulation of Blood in the Heart (Functioning of Heart)
- Heart Beat
- Blood
- Composition of Blood > Plasma (The Liquid Portion of Blood)
- Composition of Blood > Cellular Elements: Red Blood Cells (Erythrocytes)
- Composition of Blood > Cellular Elements: White Blood Cells (Leukocytes)
- Composition of Blood > Cellular Elements: Blood Platelets (Thrombocytes)
- Functions of Blood
- Blood Transfusion and Blood Groups (ABO and Rh system)
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- Heart Related Conditions
Introduction to Acid and Base
Chemical Change and Chemical Bond
Measurement and Effects of Heat
Sound
Reflection of Light
Man Made Materials
Ecosystems
Life Cycle of Stars
- Density
- Relative Density
Maharashtra State Board: Class 8
Density:
Density is a measure of how much mass is packed into a given volume. It is calculated using the formula:
Density = `"Mass" / "Volume"`
- The SI unit of density is kilograms per cubic meter (kg/m³). Density helps us determine how heavy or light a substance is for its size.
- It is a very useful property, especially when we need to check the purity of a material.
For example, if a metal has a different density from what is expected, it might contain impurities.
Maharashtra State Board: Class 8
Relative Density:
Relative density compares the density of a substance to the density of water.
Relative Density = `"Density of substance" / "Density of water"`
Because it is a ratio of two densities (both measured in kg/m³ or any other unit), relative density has no unit. It’s just a number.
Specific Gravity:
For example, if the relative density of gold is 19.3, it means gold is 19.3 times heavier than water.
