1. The Nuts and Bolts of Chemistry Elements, Compounds and Mixtures

2. Atoms: Basic and smallest particle of all elements

3. Elements: Pure substance Made of only one type of atom Cannot be broken down into smaller pieces 100+ elements in periodic table Example: oxygen, carbon, aluminum

4. Compounds: Pure substance Made of two or more different types of elements that are chemically combined Always follows a specific ratio Example: water (H 2 O), carbon dioxide (CO 2 )

5. Mixture: A combination of two or more substances mixed together (not chemically combined) Can include elements, compounds, or both Can be separated by physical changes (filtering, evaporation, etc.) Parts of a mixture keep their own properties Example: salad, air, ocean water, sand

6. Element, Compound or Mixture? Answer: Element (only one type of “ atom ” )

7. Element, Compound or Mixture? Answer: Element (only one type of “ atom ” )

8. Element, Compound or Mixture? Answer: Element (only one type of “ atom ” )

9. Element, Compound or Mixture? Answer: Mixture of elements

10. Element, Compound or Mixture? Answer: Mixture of Elements

11. Element, Compound or Mixture? Answer: Compound (2 types of atoms chem. joined)

12. Element, Compound or Mixture? Answer: Compound (3 types of atoms chem. joined)

13. Element, Compound or Mixture? Answer: Mixture of elements and compounds

14. Element, Compound or Mixture? Answer: Mixture of compounds