Pure Substances & Mixtures

So you want the big picture?
Matter can be a pure substance or mixture.
A pure substance can be an element or compound,
And can't be physically separated, how does that sound?
So you want the big picture?
Matter can be a pure substance or mixture.
A mixture can be homogeneous like steel,
Or heterogeneous like a bowl of raisins and oatmeal.

Let me school you like class, oh I like the beat fast.
Matter is everything that takes up space and has mass.
It can be sorted into two main groups:
A pure substance or a mixture like Fruit Loops.
Let's start with the first,
Hope you're ready for the information in this verse.
See, a pure substance cannot be
Broken down physically.
They include, every single element,
That's why the periodic table is so relevant.
I'm talking hydrogen, oxygen, chlorine,
Potassium, sodium, fluorine.
Compounds are in this category, too,
Except they're a pure substance of two
Or more elements stuck together like glue,
But chemically bonded, if you never knew.
One example is the water you drink, my friend,
It's a compound of oxygen and hydrogen.
Another's made of sodium and chlorine,
It can add flavor to your steak or a green bean.
Salt, you guessed it, but I got more for ya:
Represent a compound with a chemical formula.
Water is H₂O, salt is NaCl, and now you know!

So you want the big picture?
Matter can be a pure substance or mixture.
A pure substance can be an element or compound,
And can't be physically separated, how does that sound?
So you want the big picture?
Matter can be a pure substance or mixture.
A mixture can be homogeneous like steel,
Or heterogeneous like a bowl of raisins and oatmeal.

Now onto mixtures, I'm so elated,
They can be physically separated.
One example is saltwater,
We get it when we mix together salt and water.
The two compounds might blend,
But they don't form a chemical bond in the end.
Which is why we can separate them physically.
If we boil seawater, think about the imagery:
The H₂O will evaporate or rise,
And we will see salt crystals with our eyes.
We broke down the mixture into H₂O and NaCL.
Now, let me tell you about solids, gases, liquids.
They can mix with themselves,
Or mix with one another.
Think about mud and how
It's water and dirt, do you see now?
There's two types of mixtures,
The names are long like boa constrictors.
The first is heterogeneous,
Think about how cookie dough ice cream is.
The particles are not evenly mixed,
Like trail mix, or a bowl of Trix.
The second type is called homogeneous,
Or a solution, so there's no confusion.
When in doubt, all you have to do is ask:
“Does it have the same composition throughout?”
A solution is made of a solvent and solute.
Saltwater's one, and you can't refute.
Sugar water too, see the water is a solvent,
Which does the dissolving.
Salt and sugar are the solutes, they get dissolved.
This should keep your knowledge evolving.

So you want the big picture?
Matter can be a pure substance or mixture.
A pure substance can be an element or compound,
And can't be physically separated, how does that sound?
So you want the big picture?
Matter can be a pure substance or mixture.
A mixture can be homogeneous like steel,
Or heterogeneous like a bowl of raisins and oatmeal.