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Nithya Vijay 3 months ago

Arrangement of elements, based on their periodicity, which means repetition of properties based on certain aspect. Based on the atomic number, the modern periodic table was framed.
  • 1 answers

Praneeth Reddy 1 month, 3 weeks ago

Chromosomes
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Gaurav Seth 7 months ago

In an earthen pot, water gets evaporated quickly through the pores. Cooling is caused by evaporation. Some heat energy is utilised during the process of evaporation. Since this energy is taken from the water itself, it leads to a lowering of temperature in the remaining amount of water.

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Yogita Ingle 7 months, 1 week ago

Density of water varies with temperature. It is highest at 4 oC. At low tempreature, When ice is formed, density is reduced. So At low temprature in ocean, A layer of Ice floats on water and below this layer, all aquatic species can survive. At high temeperature,  Warm water of ocean causes vast currents which circulate heat from equator to temperate zone. Hence, play role in controlling climate of whole earth.

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Saireddy Vagdevi Vagdevi 5 months, 3 weeks ago

Due to diffusion of gases
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Saireddy Vagdevi Vagdevi 5 months, 3 weeks ago

Metalloids contain both metals and non metals

Gaurav Seth 11 months, 4 weeks ago

The elements which display properties of both metals and non-metals are classified as metalloids. In the Periodic Table, they separate metals from the non-metals. For eg. Silicon, Arsenic etc.

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Vishal Saxena 10 months, 1 week ago

Burning of any substance in presence of oxygen is known as combustion
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Saireddy Vagdevi Vagdevi 5 months, 3 weeks ago

To get stability
Because electron will have some mass and due to force between electron and proton it revolves
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Avasyu Pangarkar 9 months, 2 weeks ago

Firstly , molar mass = atomic mass . So you just need to know the atomic mass of an atom to know the molar mass and atomic mass is the sum of protons and neutrons of the atom
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Prem Kolte 8 months, 3 weeks ago

Matter is nothing but a smallest particle which can not be further divided into 2 halfs

Varun Kumar 12 months ago

Anything that occupies space in the nature or our surroundings is called matter

Vishwesh Naik 1 year ago

Anything that occupies space is known as the matter
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Saireddy Vagdevi Vagdevi 5 months, 3 weeks ago

Anything that occupies space and has mass is called matter

Priyanshu Pardhan 1 year, 4 months ago

Anything that occupies space and has mass is matter

Saloni Kumar 1 year, 4 months ago

A matter is a substance which has mass and occupy space for e.g a table, chair
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Yogita Ingle 1 year, 4 months ago

According to Dobereiner, all elements occurred in groups of three, when arranged in increasing order of atomic masses. He referred to these groups as triads. In a traid the elements had similar chemical properties. 

Traids of the Dobereiners classification:
Traid1:

Element Atomic mass
Lithium (Li) 7
Sodium (Na) 23
Potassium (K) 39

Dobereiner’s law of triads states that, the atomic mass of the middle element of a triad is the arithmetic mean of the atomic masses of the other two elements.
Example: In the triad of lithium, sodium and potassium. The atomic mass of lithium is 7 and the atomic mass of potassium is 39. The average of masses of lithium and potassium gives atomic mass of sodium 23.

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Saireddy Vagdevi Vagdevi 5 months, 3 weeks ago

Bromine

Rimjhim Dutta 1 year, 5 months ago

Bromine

Aalok Bishnoi 1 year, 6 months ago

Bromine
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Yogita Ingle 1 year, 4 months ago

Oxidation is defined as the process of being oxidized or oxidizing. It refers to the loss of electrons in a reaction by an atom, an ion or a molecule. Oxidation occurs when the oxidation state of an atom, ion or the molecule rises up. The reduction is the process exactly opposite of oxidation wherein the electrons are gained and the oxidation state of a molecule, an atom or an ion goes low.

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Prince Raj 1 year, 7 months ago

when two or more than two substances dissolved in a poportion is known as mixture

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