1. Read the definitions on the next two slides CAREFULLY!

2. DEFINITIONS
ELEMENT – a pure substance consisting of only one type of atom; example – chromium (Cr)
MOLECULE – the combination of two or more atoms (the same or different); example – iron oxide (Fe2O3) AND oxygen (O2)

3. DEFINITIONS
COMPOUND – a substance containing two or more elements that are combined chemically; example – silicon dioxide (SiO2)
MIXTURE – a substance containing two or more elements that have not been combined chemically; example – salt water

4. FIND the ELEMENTS water (H20) tungsten (W) sulfur (S)
table salt (NaCl)
Hint: An element has its own box on the periodic table  - a pure substance with one type of atom ONLY

5. FIND the MOLECULES nitrogen (N2) potassium (K) ammonia (NH3)
thorium (Th)
Hints: Two or more atoms combine chemically (same or different elements)

6. FIND the COMPOUNDS carbon monoxide (CO) cobalt (Co) glucose (C6H12O6)
chlorine (Cl2)
Hint: Two or more elements (different types of atoms) are combined chemically

7. Choose all that apply… table salt (NaCl) is a(n) __.
element
molecule
compound
mixture

8. What is this?
element
compound
mixture

9. What is this?
element
compound
mixture

10. element compound mixture
You leave a glass of Kool-aid out and come back a few days later. The water evaporated and left the sugar and powder mix behind. Your glass of Kool-aid is an example of what?
element
compound
mixture

11. Element, Molecule, Compound or Mixture?

12. Element, Molecule, Compound or Mixture?
(more than one atom)
-and- COMPOUND
(different types of atoms)

13. Element, Molecule, Compound or Mixture?

14. Element, Molecule, Compound or Mixture?

15. Element, Molecule, Compound or Mixture?
of ELEMENTS
Diatomic MOLECULES
MOLECULE/
COMPOUND
MIXTURE
of MOLECULES and COMPOUNDS
MIXTURE
of ELEMENTS and MOLECULES