What are the max number of keywords we can use on any page ?

[shekhar.dashing]

i wanted to know how many keywords can we use on the page because i have heard that google reduces SERP because of keyword spamming.

i am goin to publish an article for ubuntu themes

i am going to use keywords
ubuntu themes download, download ubuntu themes, linux themes, awesome ubuntu themes, awesome linux themes, themes for ubuntu, themes for linux,linux,ubuntu,ubuntu themes

is it ok if i use it on the single page ?

will it be considered as keyword spamming ?