1. Section 3
TRANSITION ELEMENTS

2. What we’ll learn? Identify properties of some transition elements.
Distinguish lanthanides from actinides.

3. Why it’s important?
Transition elements provide the materials for many things including electricity in your home and steel for construction.

4. Vocabulary:
Catalyst
Lanthanide
Actinide
Synthetic element

5. Transition Elements Groups 3-12 Metals
Combined with their elements in Ores (rocks that contain minerals such as gemstone or metals)

6. IRON TRIAD 3 elements : -iron (Fe), Cobalt (Co), Nickel (Ni)
-similar properties

7. USES: Magnetic Properties- Industrial magnets from cobalt & nickel
Nickel + Cadmium = batteries
Iron (Fe) – part of HEMOGLOBIN (substance that transport oxygen in the blood)

8. Iron (Fe)- mixed with other metals & carbon to create steels (bridges, skyscrapers, buildings)

9. USES OF TRANSITION ELEMENTS
Tungsten (W)-
-filaments in light bulb
highest melting point
Mercury (Hg)
Thermometers
room temp.
Lowest melting point
Poisonous to living things

10. Chromium ( Ch)
“chroma” (color)
Brilliant colors

11. Platinum Group (similar properties)
Ruthenium( Ru), Rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), platinum( Pt)
don’t combine easily with other elements
Used as catalyst (a substance that can make something happen faster)
Used as plastics, medicines

12. INNER TRANSITION ELEMENTS
Lanthanide ( Cerium-Lutetium)
Actinide ( Thorium- Lawrencium)

13. Lanthanide: Rare elements Found with O2 Soft metals Hard to separate
Uses:
Cerium –Misch metal (lighter)

14. Actinide
Radioactive
-Uranium (U) found in earth’s crust

15. Synthetic Elements (man- made)
Plutonium( Pu)– as fuel in nuclear power plants.
Americium (Am)- smoke detectors
Californium 252 (Cf)- kill cancer cells

16. Dental Materials: Amalgam- fill in cavities (silver filling)
(mixture of Copper (Cu), Tin (Sn), mercury (Hg)
Braces (wire)- nickel (Ni), titanium (Ti) alloy