State whether each of the following are true or false.
a thermodynamic property is always conserved.
internal energy change is not dependent on choice of system.
enthalpy change is path dependent.
volume change is not path dependent.
sum of heat and work is path dependent.
reversible work is path dependent.
temperature is constant for an ideal gas if internal energy is constant.
temperature is constant for an ideal gas if entropy is constant.
it is possible to convert work solely to heat in a cyclic process.
there is no enthalpy change in a reversible adiabatic process.
a process with no entropy change is always reversible.
a reversible process produces the most work.
entropy is destroyed in a system when there is lost work.
entropy of a system can never decrease.
entropy of the entire universe can never decrease.

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.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).