Answer:
H2S.
Explanation:
That would be H2S, hydrogen sulphide. (Smells like bad eggs!).
Answer:
You see things happen much sooner than you hear them.
Explanation:
Light travels about a million times as fast as sound.
When the ball hits the bat , it will take about a million times longer to hear the crack of the bat than to see it.
What you see is almost instantaneous.
There will be a delay until you hear the sound.
Answer:
Atom
Explanation:
atom: The basic unit of matter; the smallest unit of an element, having all the characteristics of that element; consists of negatively-charged electrons and a positively-charged center called a nucleus.
