Which substance is most likely to heat up the fastest?

water (specific heat of 4.19 /g • c°)
copper (specific heat of .39 /g • c°)
aluminum (specific heat of .90 /g • c°)
dry air (specific heat of 1.01 /g • c°)

Option (b) is the correct answer.

Explanation:

The amount of heat necessary to raise the temperature of 1 gram of a substance by is known as specific heat of a substance.

Mathematically,     q =

where,    q = Heat energy

               C = specific heat

          = change in temperature

Hence, smaller is the amount of heat required by a substance to raise the temperature of its 1 g by more readily it will get hot.

Therefore, out of the given options specific heat of copper is small. So, copper will heat up quickly.

Thus, we can conclude that copper is the substance which will likely to heat up the fastest.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.