Which of the following involves a change in physical proproties only?

a. freezing water into ice cubes

b. baking a loaf of bread

c. making an acid and a base

d. burning a match

A. Freezing Water into ice cubes

Explanation:

When freezing Water into an ice cube you are only changing the physical property and you can make the ice cube water again unlike baking a loaf of bread you cant turn that baked loaf of bread back into batter or into it's original state, burning a match would be a chemical property and so would C so therefore your answer would be

A. Freezing Water into ice cubes

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.

fe 55.85 g/mol and h2o 18.02 g/mol.