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OK, let's begin!
Compound: A substance composed of two or more elements
chemically combined in definite proportions by weight.
Mixture: Two or more substances that are
not chemically united, such as air.
Solution: A uniform mixture of varying proportions of a
solvent and a solute.
For many of our students, this is the lesson you've been waiting
for.
Lesson... Six.
Left channel.
Right channel.
Hydrogen, H,
1.
Sodium, Na, 1.
Magnesium, Mg, 2.
Aluminum, Al, 3.
Potassium, K,
1.
Calcium, Ca, 2.
Chromium, Cr, 2, three, six.
Any physical difficulty with a
record, or a turntable, is taken care of.
Do you think that Led Zeppelin and Frank Sinatra
would go together?
Edit.
No.
Combinations of music.
You're
about to play a sole, 45 RPM recording,
But the turntable is set at 33 and 13,
And the
record plays very slowly.
Let's pick up the tempo a bit, eh?
Now let us imagine
you are in the middle of your Disk Jockey program.
This is the mark of a professional.
Yeah, if you could throw a couple...yeah uhuh..
Right when he's playin' the drum...
Let
him play a couple' beats alone.
Eeeeuuh.
Uh!
Oh I'm sorry, I had the
turntable at the wrong speed.
Listen!
Scratching -- The greatest thing on
earth!
What do you do?
What do you do?
Drop!
Chemical change: a
change that alters the composition of the molecules of a substance. New substances with new
properties are produced.
Drop.
From now until your next lesson, we want you to
study carefully every section of lesson six, and t |
