Download App

Is Matter Around Us Pure? — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure?4 Marks
Question
List five characteristics by which compounds can be distinguished from mixtures.
✓

Answer

MIXTURES
COMPOUNDS
i
A mixture can be separated into constituents by the physical processes.
i
A compound cannot be separatwd into its constituents by the physical processes.
ii
A mixture shows the properties its contituents.
ii
The properties of a compound are entirely different from those of its constituents.
iii
Energy is usually neither given out nor absorbed in the preparation of a mixture.
iii
Energy is usually given or absorbed during the preparation of a compound.
iv
The composition of a mixture is variable.
iv
The composition of a compound is fixed.
v
A mixture does not have a fixed melting point, boiling point, etc.
v
A compound has a fixed melting boiling point etc.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 4 Mark )" from Is Matter Around Us Pure?→Is Matter Around Us Pure? — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

State and explain the law of conservation of energy with an example.
→
An element X forms the following compounds with hydrogen, carbon and oxygen:
H2X, CX2, XO2, XO3
→
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
→

How do you differentiate between capture fisheries, inland fisheries and aquaculture?

→
Classify connective tissue and give one example of each type.
→
An object is dropped from rest at a height of 150m and simultaneously another object is dropped from rest at a height 100m. What is the difference in their heights after 2s if both the objects drop with same accelerations? How does the difference in heights vary with time?
→
Give two examples each of longitudinal waves and transverse waves.
→
What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically
  1. momentum versus velocity when mass is fixed.
  2. momentum versus mass when velocity is constant.
→
State the two important laws of chemical combination. How Dalton’s atomic theory explains the two Laws?
→

  1. Identify the figure and write down its class.
  2. Label A, B, C, and D.
  3. What if its respiratory organs?
  4. What type of adaptation this creature has?
  5. What type of endoskeleton it has?
→