12 Questions
What happens to the particles of salt when it is dissolved in water?
They spread throughout the water
What is the SI unit of mass?
Kilogram (kg)
In the activity described, why is it important to use the idea that matter is made up of particles?
To answer questions about the behavior of substances when dissolved in water
What is the common unit of measuring volume?
Litre (L)
How are the particles of salt represented in Figure 1.1 when it is dissolved in water?
They get into the spaces between particles of water
What do potassium permanganate crystals dissolve into when mixed with water according to the activity?
Water
What was the classification system proposed by early Indian philosophers regarding matter?
Air, earth, fire, sky, and water
According to the passage, what is the defining characteristic of matter?
It occupies space and has mass
What did ancient Greek philosophers propose regarding the classification of matter?
They proposed a classification similar to early Indian philosophers
What were the two prevailing schools of thought regarding the nature of matter?
Continuous vs. particulate, and organic vs. inorganic
According to modern-day scientists, how is matter classified?
Based on its physical properties and chemical nature
Which aspect of matter is the focus of this chapter?
The physical properties of matter
Explore the concept of matter and its presence in our surroundings. Learn about the properties of matter, such as mass and volume, and how everything in the universe is composed of material known as 'matter'.
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