Puspak Sah

1. Nucleon : A proton or a neutron present in the nucleus of an atom of an element is called nucleon . Example: Carbon consist of 6 protons and 6 neutrons . i.e., there are 12 nucleons in C atom.

2. Atomic Number : The atomic number is the total number of protons present in the atom. Example : the atomic number of sodium is 11. i.e., it contains 11 protons and 11 electrons.

3. Atomic Mass Number : The atomic mass number of an atom is the total number of protons and neutrons (nucleons)...

Define atom, according to Dalton's atomic theory. What are atom composed of? Define chemical symbol. Write the symbol of Tin, Lead, Antimony & Platinum with its latin name.

According to Dalton's atomic theory, an atom is defined as the smallest indivisible particle of an element having no free existence in nature.

Atoms are composed of protons, electrons and neutrons.

Chemical symbols are the abbreviations used in chemistry for chemical elements, functional groups and chemical compounds.

Elements with their symbol...

Define law, hypothesis and theory. How is the scope and depth of chemistry determined? And list the branches of chemistry and also write the importance of chemistry.

Law : A law is a summarized statement of results obtained by experiments. A law can say what happens but it can't answer why does it happen.

Hypothesis : A hypothesis is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it.

Theory : A theory is a proposed model introduced to establish a relationship between hypothetical causes and experimental observation ( effect).

The scope and...

Explain the types of physical division and chemical division of matter.( Also explain the sub-types of chemical division.)

Matter is anything that possesses mass, occupies space and may be perceived through one or more senses.

The physical divisions of matter are:

1. Solid : Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around.

2. Liquid : Liquid matter is made of more loosely packed particles. It will take the shape of its container. Particles can...

What does chemistry as a science begin with? Define chemistry and matter and also draw flow chart of classification of matter.

Chemistry as a science begins with matter.

Chemistry is a branch of science that basically deals with study of composition and properties of matter and also physical and chemical interaction which may take place among matters.

Matter is anything that possesses mass, occupies space and may be perceived through one or more of our senses.

Flow chart of classification of matter:

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Puspak Sah

Asked Questions

1). Molecular formula of C6H12O6. Calculate&nbsp;&nbsp; &nbsp;a). molecular mass of the compound&nbsp; &nbsp;b).mass ratio and % composition of elements present in the compound2). Empirical formula...

i). Naturally occuring neon is 90.9% neon-20, 0.3% neon-21, 8.8% neon-22. Use this figure to calculate relative atomic mass of naturally occuring neon.ii).A natural mixture of hydrogen contains 1H1...

Define the terms with important points and examples:&nbsp;&nbsp;a).Nucleon&nbsp; b).Atomic number&nbsp; c).Atomic mass number&nbsp; d).Isotopes&nbsp; &nbsp;e).Atomic mass unit(amu)&nbsp; f).Relativ...

Define atom, according to Dalton's atomic theory. What are atom composed of? Define chemical symbol. Write the symbol of Tin, Lead, Antimony & Platinum with its latin name.

Define law, hypothesis and theory. How is the scope and depth of chemistry determined? And list the branches of chemistry and also write the importance of chemistry.

Explain the types of physical division and chemical division of matter.( Also explain the sub-types of chemical division.)

What does chemistry as a science begin with? Define chemistry and matter and also draw flow chart of classification of matter.

1). Molecular formula of C6H12O6. Calculate a). molecular mass of the compound b).mass ratio and % composition of elements present in the compound2). Empirical formula...

Define the terms with important points and examples: a).Nucleon b).Atomic number c).Atomic mass number d).Isotopes e).Atomic mass unit(amu) f).Relativ...