Download App

Atoms and Molecules — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceAtoms and Molecules2 Marks
Question
What is an atom? How do atoms usually exist?
✓

Answer

An atom is the smallest particle of an element that can take part in a chemical reaction. They usually exist in combination with the atoms of same element or another element.

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 Atoms and Molecules→Atoms and Molecules — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

What happens to the speed of sound when it goes from solid to gaseous state?
→
A moving bicycle comes to rest after sometime if we stop pedalling it. But Newton’s first law of motion says that a moving body should continue to move for ever, unless some external force acts on it. How do you explain the bicycle case?
→
A horse continues to apply a force in order to move the cart with a constant speed. Explain why?
→
A force of $20N$ acts upon a body whose weight is $9.8N.$ What is the mass of the body and how much is its acceleration? $(g = 9.8ms^{-2}).$
→
In an experiment to measure his power, a student records the time taken by him in running in a flight of steps on a staircase. Use the following data to calculate the power of the student:
Number of steps $= 28$
Height of each step $= 20\ cm$
Time taken $= 5.4s$
Mass of student $= 55\ kg$
Acceleration $= 9.8\ ms^{-2}$
Due to gravity.
→
Write the three equations of uniformly accelerated motion. Give the meaning of each symbol which occurs in them.
→
Describe a method to separate a mixture of camphor and sand.
→
You have a bag of cotton and an iron bar, each indicating a mass of 100kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?
→
What does the diffusion of gases tell us about their particles?
→
A force of 50N acts on a body and moves it a distance of 4m on a horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
→