Question Text
Question 6 :
True or False. The particles of matter do not have space between them.
Question 7 :
True or False. The particles of matter do not attract each other.
Question 8 :
The mass per unit volume of a substance is called density . Arrange the following in order of increasing density-air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Question 9 :
Arrange the following substances in increasing order of forces of attraction between the particles-water, sugar, oxygen.
Question 10 :
True or False. We can get the smell of perfume sitting several metres away.
Question 12 :
True or False. An iron almirah is solid at room temperature.
Question 14 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2e7f59b460d7261f653.png' />
From the above figure, Name A in the following diagram showing change in its states.
Question 15 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2e9f59b460d7261f655.png' />
From the above figure, Name C in the following diagram showing change in its states.
Question 16 :
True or False. Matter is composed of very small particles like atoms or molecules.
Question 18 :
True or False. The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
Question 19 :
True or False. Naphthalene balls disappear with time without leaving any solid.