Matter In Our Surroundinges — Flashcards
NIOS · Class 10 · Science & Tech
40 flashcards for Matter In Our Surroundinges (NIOS Class 10 Science & Tech) to test yourself on key terms and facts. Sample: "What is matter?"
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What is matter?
Answer
Matter is anything that has mass and occupies space. A book, water, air, and a stone are all matter.
Why is a bag of air still matter?
Answer
Air has mass and it occupies space inside the bag. Since both conditions are true, air is matter.
What is a substance?
Answer
A substance is a pure kind of matter having only one kind of constituent particle, such as an atom or molecule.
How are substances and mixtures different?
Answer
All substances are matter, but all matter is not a substance. Mixtures are matter, but they are not pure substances.
How did early thinkers view matter as continuous?
Answer
Plato and Aristotle believed that matter is continuous and can be subdivided indefinitely. They did not support the particulate view.
Who believed that matter is made of tiny indivisible particles?
Answer
Kanada, Leucippus, and Democritus supported the particulate view of matter. Democritus coined the term atom.
What is the modern idea of atom?
Answer
The modern idea of atom originated with John Dalton in 1803.
Why can matter be classified in two main ways?
Answer
Matter is classified by physical state as solid, liquid, or gas, and by chemical composition as element, compound, or mixture.
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