1.what does an atom consists of?
2.what is compound ?
3. what is mixture?
4.explain the significance of writing a chemical formulae?
5.what is chemical equation? give example
Answers
Answer:
1.Most of the atom is empty space. The rest consists of a positively charged nucleus of protons and neutrons surrounded by a cloud of negatively charged electrons. The nucleus is small and dense compared with the electrons, which are the lightest charged particles in nature.
2.A compound is a substance formed when two or more chemical elements are chemically bonded together. In mixtures, the substances present are not chemically bonded together. Water: two hydrogen atoms bonded to an oxygen atom. ... Each molecule of water contains two hydrogen atoms bonded to a single oxygen atom.
4.A chemical formula provides important information on the chemical makeup of any substance (element or compound). It names all the elements present in the molecule. A chemical formula also provides important information on the number of atoms of each constituent element of the molecule of the substance.
3.In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
5.A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Answer:
Answer of 1,2,3
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