Properties of Alkali Metals

Answer 1

•The boiling points and melting points increase inthe number of carbon atoms.

•Alkynes are soluble in polar solvents such as water

•Have incomplete combustion

Answer 2

the alkali metals (Li,Na,K,Rb,Cs,Fr) are highly reactive and are usually stored in mineral oil or kerosene.The alkali metals show a number of trends when moving down the group - for instance: decreasing electronegativity, increasing reactivity, and decreasing melting and boiling point. Their densities generally increase, with the notable exception that potassium is less dense than sodium, and the possible exception of francium being less dense than caesium. (The highly radioactive element francium only exists in microscopic quantities.)

Answer 3

Alkali metals are highly reactive metals that form strong alkaline solutions when they react with water. They have low melting and boiling points, and are soft enough to be cut with a knife. Alkali metals readily lose their outermost electron to form ions with a +1 charge.

Answer 4

high pH, have OH- ions. that's all i think

Answer 5

1.they undergo combustion reaction.

2.they do not decolorize bromine water.

3.they react with halogens forming haloalkanes.

Answer 6

Yes