I'm full of fizz, but contain no broth. I wear many colors, yet own no cloth. I sweeten your tongue, but rot your tooth. What am I?

Forwards I am heavy. Backwards I am not. What am I?

I can lie, but I cannot speak. People use me to welcome and clean.

Pronounced as one letter, and written with three, two letters there are, and two only of me. I’m double, I’m single, I’m green blue, brown and gray, I’m read from both ends, and the same either way.

My first three are sleep’s restless, darting stage, My last five burn softly, past fire’s dim cage. Bind them as one, both spark and slumber, I am the word that recalls every wonder.