Showing posts with label WAEC TUTORIALS. Show all posts
Showing posts with label WAEC TUTORIALS. Show all posts
Stoichiometry: is the calculation of relative quantities of reactants and products in chemical reactions . Stoichiometry is founded on the law of …
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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 …
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As explained in Wikipedia, The ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation of the behavior of many gas…
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An ideal gas is a theoretical gas composed of many randomly moving point particles whose only interaction is perfectly elastic collision.
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Metals are known to react with acids resulting in the evolution of hydrogen gas. Only the metals which lie above the electrochemical or activity series ca…
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A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table…
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Group 7, numbered by IUPAC nomenclature, is a group of elements in the periodic table. They are manganese (Mn), technetium (Tc), rhenium (Re), and bohrium…
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The period 3 element is one of the chemicalelements in the third row (or period) of the periodic table of the chemical elements. The periodic table i…
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A block of the periodic table of elements is a set of adjacent groups. The term appears to have been first used by Charles Janet.The respective highest-…
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Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size an…
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The periodic law also known as Dimitri mendeleev law. It states that the properties of the element in the periodic table are periodic functions of their a…
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Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). The m…
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Most materials in our surroundings are mixtures of two or more components that can be physically seperated
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The periodic table arranges all of the known elements in order of increasing atomic number. Order generally coincides with increasing atomic mass. The d…
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A pattern of repeating order is called periodicity . In the mid-1800s, Dmitri Mendeleev, a Russian chemist, noticed a repeating pattern of chemical proper…
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There are several differences between a physical and chemical change in matter or substances.
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The unified atomic mass unit (symbol: u) or dalton (symbol: Da) is the standard unit that is used for indicating mass on an atomic or molecular scale (ato…
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In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structur…
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