ICSE Class 7 Chemistry
Question 8 of 14
Matter and Its Composition — Question 4
Back to all questions 4
Question Question 6
Differentiate the general properties of solids, liquids, and gases in the form of a table with reference to-
(a) Mass
(b) space
(c) Volume
(d) shape
(e) compressibility
(f) density
(g) free surfaces
(h) diffusion
| Characteristics | Solids | Liquids | Gas |
|---|---|---|---|
| Mass | Have mass | Have mass | Have mass |
| Space | Occupies space | Occupies space | Occupies space |
| Volume | A definite volume | A definite volume | No definite volume |
| Shape | A definite shape | No definite shape | No definite shape |
| Compressibility | No compressibility | Slight Compressibility | High compressibility |
| Density | High Density | Less density | Least density |
| Free Surface | Any number of free surfaces | One upper free surface | No free surfaces |
| Diffusion | No diffusibility | Slight diffusibility | High diffusibility |
ICSE Class VII Chemistry Chapter 1 15 Marks
Matter and Its Composition — Quick Study Guide
Everything around us is made of matter. Matter has mass and occupies space. It exists in three states: solid, liquid, and gas. Each state has unique properties based on how particles are arranged and move.
Key Definitions
- Matter: Anything that has mass and occupies space
- Solid: Fixed shape and volume, particles closely packed
- Liquid: Fixed volume but no fixed shape, particles slide over each other
- Gas: No fixed shape or volume, particles move freely
- Diffusion: Spreading of particles from high concentration to low concentration
- Sublimation: Direct change from solid to gas (e.g., camphor)
- Latent heat: Heat absorbed during change of state without temperature change
Important Comparisons
Evaporation vs Boiling: Evaporation is a surface phenomenon at all temperatures (slow, no bubbles). Boiling occurs throughout the liquid at a specific temperature (rapid, with bubbles).
Exam Tips
- Learn all six interconversion processes with examples
- Practice questions on predicting state at a given temperature
- Know factors affecting evaporation (4 factors)
- Understand why pressure cooker cooks faster
Bright Tutorials | ICSE Class VII Chemistry | Chapter 1: Matter and Its Composition | Contact: 9403781999