1. Atoms, Molecules, & Compounds!

2. STATES OF MATTER SOLID Can’t change its shape Can’t change its size LIQUID Can change its shape Can’t change its size GAS Can change its shape Can change its size

3. Matter is divided into 4 groups *ELEMENTS *COMPOUNDS *MIXTURES *SOLUTIONS

4. ELEMENT One of more than 100 basic kinds of matter that cannot be broken into smaller pieces through physical or chemical processes.

5. Add table

6. ATOM The smallest particle of an element with the same properties of the element.

7. MOLECULE The smallest part of a substance made from more than one atom that still has the properties of that substance

8. COMPOUND A kind of matter made of a chemical combination of two or more elements. Every compound has a formula that shows how many atoms of each element are in the compound. For example, H 2 O

9. Let’s Build Some Molecules And Compounds!

10. Element Symbol Color of Gummy Hydrogen Carbon Oxygen Silicon Nitrogen

11. Hydrogen Gas H 2 Oxygen Gas O 2 Let's start with a couple of Molecules

12. Methane CH 4 Silicon Dioxide SiO 2 Ammonia NH 3 Propane C 3 H 8 Now for some compounds

13. Carbon Monoxide CO Carbon Dioxide CO 2 Let's see how changing the amount of one element makes a difference

14. Carbon monoxide CO A deadly, colorless, odorless, poisonous gas Carbon Dioxide CO 2 a gas that is produced when people and animals breathe out or when certain fuels are burned and that is used by plants for energy When frozen, it becomes a solid called Dry Ice. What happens when Dry Ice “melts”?