Do Now: Match the substance to the correct category. Use the vocabulary list to remind you of the proper terms.

| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
Methane
| arrow_right_alt | Element |
Blood
| arrow_right_alt | Heterogeneous Mixture |
Carbon Dioxide
| arrow_right_alt | Homogeneous Mixture |
Air
| arrow_right_alt | Homogeneous Mixture |
Aluminum Foil
| arrow_right_alt | Heterogeneous Mixture |
Salt Water
| arrow_right_alt | Compound |
Sandwich
| arrow_right_alt | Heterogeneous Mixture |
Breccia (angular clasts within an igneous matrix)
| arrow_right_alt | Homogeneous Mixture |
Gold
| arrow_right_alt | Compound |
Supreme Pizza
| arrow_right_alt | Compound |
Limestone (CaCO3)
| arrow_right_alt | Elemental |
For each question answer in one word (when short answer questions are given).

The reactants (inputs) of this equation are on the
How many oxygen atoms are in one molecule of Nitrogen Dioxide (NO2)?

How many oxygen atoms are in all molecules of Nitrogen Dioxide (NO2) in this nitrification reaction?

How many oxygen atoms are in there in total on the product side of the nitrification reaction?

How many oxygen molecules (groups) are on the reactants side of the equation?


How many oxygen atoms in total are there on the reactants side of the equation?

Compare the number of oxygen atoms on the reactant side to the product side of the nitrification reaction. What do you notice? This should be a complete sentence.
Bonus: H+ is one of the products of Nitrification. Why do you think that the hydrogen has a plus sign next to it? What could cause it to be positive? Use this image to help.

Exit Ticket: What information do chemical equations tell us? Write as much as you can in three minutes.