Solubility: Viscosity: Frequency: Ductile: Malleable: Combustible: Radioactive: Corrosive:

Solubility is a property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. The resulting solution is called a saturated solution.

the state of being thick, sticky, and semifluid in consistency, due to internal friction.or a quantity expressing the magnitude of internal friction, as measured by the force per unit area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another.

1.  frequency

the rate at which something occurs or is repeated over a particular period of time or in a given sample.

Ductile: of a metal) able to be drawn out into a thin wire.

able to be deformed without losing toughness; pliable, not brittle

Malleable:(of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.

Combustible:able to catch fire and burn easily.

Radioactive:Radioactivity is the spontaneous emission of radiation in the form of particles or high energy photons resulting from a nuclear reaction. ... A substance that contains unstable atomic nuclei is considered to be radioactive. Radioactive decay is a random or stochastic process that occurs at the level of individual atoms.

Corrosive:t ending to cause corrosion(Corrosion is when a refined metal is naturally converted to a more stable form such as its oxide, hydroxide or sulphide state this leads to deterioration of the material.)

Explanation:

(source: google for all)

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-