A particle diagram shows the idea of chemical substances in a cartoon sort of way.

1. Matter Class #4Objective: Particle Diagrams for solids, liquids, gases, atoms, molecules, compounds, and mixtures. Then finish up Lab # 5,6, and 7.Lots of drawing today, get paper, put on thinking hats.Matter HW #2 due Friday.

2. A particle diagram shows the idea of chemical substances in a cartoon sort of way. The diagrams are not realistic in shape, but with some imagination and thinking, you can understand what they are going to show. You need to be aware of these vocabulary words to move forward. Think, or ask now. SOLID – LIQUID – GAS ATOM – COMPOUND – MIXTURE – DIATOMIC ELEMENTS These diagrams will show all seven of these, you need to be able to recognize them, and draw examples of each of these seven.

3. Atoms, diatomic elements, molecules… which are which?

4. atoms molecules diatomic elements

5. These might be CO2 2 kinds of atoms Maybe H2, O2, N2, Cl2, etc. These might be NH3

6. Particle diagrams show atoms, diatomic elements, or molecules. They can also show phases, depending upon how the particles are arranged in the box. LEFT TO RIGHT: Gas particles don’t touch and “float” in space. Liquids are at the bottom, but not arranged orderly. Solid matter has particles in a very orderly pattern, that does not conform to the shape of the container.

7. Could this be Ammonia NH3 Carbon Dioxide CO2 Water H20 Methane CH4 Could this be Ammonia NH3 Carbon Dioxide CO2 Water H20 Methane CH4

8. When 4.0 g hydrogen combines rapidly with 32 grams of oxygen in the air to form into wata, how many grams of this dihydrogen monoxide form?

9. When 4.0 g hydrogen combines rapidly with 32 grams of oxygen in the air to form into wata, how many grams of this dihydrogen monoxide form? 36 grams of course Matter cannot be created or destroyed in a chemical reaction, or physical change. answer 4.0 g + 32 g = 36 g

10. What's in the box? • Atoms only • Atoms and molecules • Molecules only • Diatomic elements • A mixture • A compound Which of these could be in the box? H2, He, CO2, H2O, CO, CH4

11. What's in the box? That is an atom, could be He, or any other single atom. That is a compound with a 1:1 ratio, maybe CO This is a diatomic element, maybe H2 Which of these could be in the box? H2, He, CO2, H2O, CO, CH4

12. Read the MATTER BASICS tonight. Notes due by MONDAY. Matter HW #2 due on Friday.

13. Tell Ms. O’Donnell why this slide is blank please.

14. Co, Ne, Hg, H2O, Au, and Mg are the substances we will use for these questions: 1. which has the highest boiling point? Cobalt at 3143 K which is 2870 °C 2. Which will expand the most when heated? The gas neon 3. Which can be compressed the most? The gas neon 4. Which are the least likely to be compressed? Cobalt, mercury, water, gold, and magnesium (gases compress easily) 5. Which will melt in your mouth? Only the water 6. Which will fit into any shape container you place it (at 25°C) neon gas, or liquid water 7. Which will FILL any container you place it into (at 25°C) The gas neon How many atoms are in each of these compounds? H2SO4 7 C6H12O6 18 NaCl 2 H3PO4 7 C10H22 32 CH4 5 KI 2