Download App

Is Matter Around Us Pure — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure2 Marks
Question
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide:
Is this a physical or a chemical change?
✓

Answer

The phenomena given in question is a chemical change because the composition of product formed is different from the substance taken. The reaction involved is
$\mathrm{CaCO}_3 \rightarrow \mathrm{CaO}+\mathrm{CO}_2$
Calcium carbonate Calcium oxide Carbon dioxide.

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 2 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

What is soil pollution?
→
A body of mass $100\ kg$ is lifted up by $10\ m$. Find:
  1. The amount of work done.
  2. Potential energy of the body at that height. (value of $g = 10\ m/s$).
→
A tortoise moves a distance of $100$ metres in $15$ minutes. What is the average speed of tortoise in $km/h?$
→
Name the type of disease that remain restricted only to a particular person.
→
An electric bulb of $75W$ burns for $4h$ a day. What will be the cost of electricity involved in a month of $30$ days at $₹\ 2.5$ per unit.
→
Write down two advantages of fertilizer over manure.
→
A train starting from stationary position and moving with uniform acceleration attains a speed of $36km$ per hour in $10$ minutes. Find its acceleration.
→
What is the cause of buoyant force?
→
Explain the various factors which are responsible for the loss of stored food grains.
→
When is a body said to have uniform velocity?
→