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Student should know complete combustion produces CO₂ and H₂O Once products are known, equation can be balanced as:  CH₄ + 2O₂ ---> CO₂ + 2H_2<...

Simple definition: Electronegativity is the tendency of an atom to attract a bonding air of electrons to itself

Student should factorise equation to (x-2)(x+3) = 0 This gives roots of 2 and -3

VOSSAG V - Variation: all organisms undergo varying amounts of genetic variation due to genetic mutations or environmental factors (such as geographic separation). O - Overpopulation: all...

Avogadro's constant is defined as the number of atoms/molecules in one mole of a substance. It's value is approximately 6.023 x 10^23.

It is often used in conjunction with the equa...