Element help and riddles?

1.) People confuse me with tin or lead. I am the heaviest nonradioactive element. I am stable can easily turn into liquid. Used in Fire alarms, i set off the alarm when i melt in intese heat? please answer starting with 1.)
2.) Wizark around the world, i am wizard catalyzer of reactions. I am more sought than me close cousin platinum.
Sevret surface pores. Used in catalyic converts of modern cars. save planet of hydropcarbon emmisions
3.)Useful in electronics. real problem child. puzzle identifying and classifying. Corrupting influence without equal. on compount that can touch spotless gold. cause extreme bad breath and terrible body odor.

(1) Bismuth, Bi.

(2) Palladium, Pd.

(3) Mercury, Hg.

rowing machine (aka erg) music?

my team really wants me to put together a mix of songs for us to erg to, I know some people tend to think music is bad cause silence is golden but…. i tend to think differently. we are a bunch of high school girls, i am on the novus team (just in case it changed your thoughts) i myself am not a freshman though. also our coach said NO RAP/HIP-HOP i have no idea what to put on there here is what i already have.

Jerk it Out – The Caesars
Conquest – The White Stripes
Fell in Love With a Girl – The White Stripes
Dashboard – Modest Mouse
Mr. Jones – Counting Crows
Every Other Time – LFO
Verona – Elemeno P
How Will We Ever Know How – Valencia
Black Mamba – The Academy Is…
What’s My Age Again – Blink 182
The Party Song – Blink 182
Here’s to You – Diffuser (Has the F word in it once that I know of if that’s ok?)
Here in Your Arms – Hellogoodbye
Let’s See How Far We’ve Come – Matchbox 20
3′s and 7′s – Queens of the Stone Age

Sorry if I’m not much help hehe. I’m more into hardcore and screamo music myself when I’m erging.