1. #16 Molecules and Compounds how elements’ atoms combine!

2. Make a t chart in your notebook like the one below:
Molecule
Compound

3. Take notes on molecules and compounds during the video

4. Molecules
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together.
Some elements can exist in molecule form.
Have a chemical formula:
Ex- O2, H2O, CO2, N2

5. Compounds A type of molecule
atoms of two or more different elements bound together
can be broken down by chemical reactions
different from the elements that make it up
Have a chemical formula:
H2O = Water
CO2 = Carbon dioxide
C2H4O2 = acetic acid (aka vinegar!)
Nacl = SALT

6. Your apparatus should look like this:
SPLITTING H20!
What do you need?
A 9 volt battery
Two regular number 2 pencils
1 note card
Electrical wire (2)
Beaker
100 mL Water `
Your apparatus should look like this:

7. Exit ticket:
which gas is appearing on each pencil? Make an inference on how you might know this. Hint: the chemical formula for water is h20