3. Complete the following word equations and then write balanced symbol equations for each: [9]
a) sodium + water 
b) potassium + fluorine 
c) fluorine + hydrogen 
4. Write down the names of the products for these reactions: [6]
a) fluorine + potassium bromide 
b) iron(III) oxide + sulfuric acid 
c) tin(II) carbonate + nitric acid 
5. Balance the following equations: [3]
a) Al + F2  AlF3
b) Fe2O3 + CO  Fe + CO2

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

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.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.