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Atom - an atom is the smallest particle of an element that can tailor part in a chemical reaction Molecule - a molecule is a group to atoms that takes part in a chemical reaction.

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Structure of an atom

Posted by Akansha Karnawat 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Sabh Singh 7 years, 2 months ago

atom is a small particles atom can neither nor be created nor be dertroyed

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What is the number of molecules of sulphur present in 16g of solid sulphur

Posted by Rishita Mukherjee 7 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Priyanshu Pal 7 years, 2 months ago

3.011×10²³

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Sayoni Debnath 7 years, 2 months ago

0.376×10^23 (approx)

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Mohd Ali 7 years, 2 months ago

3.011×10*23

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How many type of inertia are there and describe them plz ans fast?

Posted by Naresh Kumar Kurmi 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 2 months ago

Three types of inertia are:
Inertia of rest: The ability of a body to resist any change in its state of rest.
Inertia of motion: The ability of a body to resist any change in its state of motion.
Inertia of rotation: The ability of a body to resist any change in its state of rotation is inertia of rotation.

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What is upthrust??

Posted by Atul Yadav 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 2 months ago

Push an empty can in water. You will feel an upward force and you will find it difficult to push the can further. Water exerts force on the can in the upward direction. When a body is immersed in a liquid, the liquid exerts an upward force on the body. This force is called the upthrust or buoyant force.

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on which principal on which rocket works

Posted by Harshita Maurya 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 7 years, 2 months ago

Rocket works on the principle of Newton's Third law" i,e for every action there is equal and opposite reaction.
Explanation:
In a rocket, hot gases produced by the rapid burning of fuel rush out of jet at the bottom of rocket at very high speed . The equal and opposite reaction force of downward going gases pushes rocket upwards with great speed.
We can also say that Rocket works on the principle of law of conservation of momentum.

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State a condition for an echo to be heard ?

Posted by Himanshu Meena 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Khushi Boora 7 years, 2 months ago

Distance should be 17.2 m. Time should be 0.1 sec. Object must be reflecting.

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Amisha Rawat 7 years, 2 months ago

The distance between the source to back should be 17 m

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State the law of gravitation?

Posted by Bhawna Gupta 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Himanshu Meena 7 years, 2 months ago

The universal law of gravitation states that any two objects having mass attract each other with force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The force acts along the line joining the centres of the two objects.

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How does sound propagate??

Posted by Baona Paan 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Amisha Rawat 7 years, 2 months ago

Sound propogate due to continuous compression and rarefaction

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Define equation motion

Posted by Surender Yadav 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Himanshu Meena 7 years, 2 months ago

There are three equation of motion.

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Arushi Gautam 7 years, 2 months ago

A body is said to be in motion when its position changes continuously with respect to a stationary object taken as reference point

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What is micronutrients and macronutrients

Posted by Lavi Rathore 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Aishwarya Nagrani 7 years, 2 months ago

Micro means small and macro means large

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Arjun Bhatty 7 years, 2 months ago

Micronutrients are nutrients required by plants in small quantities. Macronutrients are nutrients required by plants in large quantities

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Write about gaseous state?

Posted by Santosh Kumar 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Amisha Rawat 7 years, 2 months ago

The particles are loosely packes they do not have molecular force of attraction they are highly compressible and diffusion is fastest in this state it has either fixed shape nor fix volume

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Who was the leader of nazi party

Posted by Urvish Shah 7 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Aishwarya Nagrani 7 years, 2 months ago

Adolf hitler

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Nandana P Pillai 7 years, 2 months ago

Adolf hitler

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Urvish Shah 7 years, 2 months ago

Adolf hitler

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How can make the formula in ch-3 atom and moleculsz

Posted by Chaitanya Gautom 7 years, 2 months ago

CBSE > Class 09 > Science

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Meaning of gram molecular mass

Posted by Harsh Saini 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Megha Awasthi 7 years, 2 months ago

Mass of a molecular is known as a gram molecular Mass Posted by seema Awasthi

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Aayush Nautiyal 7 years, 2 months ago

Mass of a molecule is known as gram molecular mass

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what is the drawback of Neils Bohr in the lesson "The Structure Of an atom"?

Posted by R Dishanth 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Dinesh Mehts 7 years, 2 months ago

According to bhor's model atom consist of three layers proton electron and netron.The proton, electron are located in a small shell called nucleus

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Draw the atomic structure of the following elements a sodium atom and sodium ion

Posted by Yash Yadav 7 years, 2 months ago

CBSE > Class 09 > Science

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what is smoke how does it effect in the life

Posted by Riyansh Sahu 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Aishwarya Nagrani 7 years, 2 months ago

And it take 11 min of life and make our life dangerous

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Glorious India 7 years, 2 months ago

Smoke is a dangerous substrance that can effect our whole body . When we smoke then the half of the air is filled in our kidney and it can effect our body .

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Point object

Posted by Cs Gaming Zone 7 years, 2 months ago

CBSE > Class 09 > Science