After Quiz: In your notebook, answer the following questions After Quiz: In your notebook, answer the following questions. USE FULL SENTENCES AND RE-STATE THE QUESTIONS. 1. Which of the following metals would be most likely to react similarly with other elements. Tell why you know this. Elements: calcium, cobalt, potassium, copper, silver Elements: lithium, titanium, magnesium, potassium Evaluate the physical properties of potassium, magnesium and copper. Select the best choice to use for a building project. Explain why this metal is the best building material to use.

Chapter 10 Lesson 2 Metals

Physical Properties of Metals All of the elements in groups 1-12 are metals (except for hydrogen) Q: What is a physical property? A: observable characteristics used to describe or identify something without changing its make up To be a metal, an a element must have the following properties: Luster Ductility Malleability Conductivity of thermal energy and electricity

Chemical Properties of Metals Q: What is a chemical property? A: the ability or inability of a substance to change into one or more new substances Chemical properties of metals can be very different…BUT… Metals in the same group usually have similar chemical properties (ex: gold and other metals in group 11 do not easily react with other substances

After Quiz: In your notebook, answer the following questions After Quiz: In your notebook, answer the following questions. USE FULL SENTENCES AND RE-STATE THE QUESTIONS. 1. Which of the following metals would be most likely to react similarly with other elements. Tell why you know this. Elements: calcium, cobalt, potassium, copper, silver Elements: lithium, titanium, magnesium, potassium Evaluate the physical properties of potassium, magnesium and copper. Select the best choice to use for a building project. Explain why this metal is the best building material to use.

Q: If all metals share certain characteristics, why are some used for certain jobs instead of others? For example, why is copper used for cookware and wires instead of, say, gold? Even though they share properties, copper is less expensive than other metals, like gold

Alkalai Metals Group 1 *react quickly with other elements (like oxygen) *so reactive they’re never found uncombined in nature-only in compounds *soft & shiny *lowest densities of all metals

Alkalai Earth Metals Group 2- 2 valence electrons *React quickly with other elements but not as quickly as alkali metals *always in compounds in nature, never in a free state *soft and silvery *low densities but not as low as alkaline earth metals

Transition Metals Groups 3-12 *in two blocks on the table 1. first block is in the center of the table 2. second block includes the two rows at the bottom of table Compared to Groups 1&2 all have: -higher melting points -greater strength Higher densities -reactive less quickly with oxygen -can exist in nature as free elements

Uses of Transition Elements Main Block: Good building materials because of: High densities, strength and resistance to corrosion Coins – copper, silver, nickel and gold Jewelry – copper, silver, nickel and gold Electrical wires In compounds: Paints and pigments

Lanthanides and Actinides Removed from the table so that periods 6&7 would not be longer than the other periods Uses Strong magnets (neodymium) Fuel in nuclear reactors (plutonium)

Patterns in Properties 1. From LEFT to RIGHT – metallic properties DECREASE (so…metals on the right side have NO metallic properties at all) EX: potassium has the highest luster, is most malleable and conducts electricity better than all the elements in period 4 2. Metallic properties tend to INCREASE as you move down a group. EX: malleability of gold is greater than either silver or copper because it is below these two elements in group 11