Shared Flashcard Set

Details

Science 4-3
Metals
12
Science
8th Grade
11/29/2011

Additional Science Flashcards

 


 

Cards

Term
What are the physical properties of metals?
Definition

Physical properties of metals include:

1) shininess

2) malleability

3) ductility

4) conductivity

Term
ductile
Definition

a material that can be pulled out, or drawn, into a long wire (copper is an example)

Term
conductivity
Definition

the ability of an object to transfer heat or electricity to another object

Term
reactivity
Definition

the ease and speed with which an element combines, or reacts, with other elements and compounds (metals usually react by losing electrons to other atoms)

Term
corrosion
Definition

the destruction of metal by turning to a reddish-brown rust (this happens because the metal reacts with oxygen in the air, forming iron oxide, or rust.)

Term
malleable
Definition

material that can be hammered or rolled into flat sheets and other shapes (copper is both malleable and ductile)

Term
How is reactivity organized in the periodic table?
Definition

The reactivity of metals tends to decrease as you ove from left to right across the periodic table

Term
alkali metals
Definition

metals in Group 1 (from lithium to francium)

  • react by losing 1 electron
  • are never found uncombined in nature
  • 2 most important alkali metals are sodium and potassium
Term
alkaline earth metals
Definition

Group 2 of the periodic table

  • each metal is hard, gray-white, and a good conductor of electricity
  • are never found uncombined in nature
  • they react by losing 2 electrons
  • 2 most common are magnesium and calcium
Term
transition metals
Definition

elements in Group 3 through 12 of the periodic table

  • include iron, copper, nickel, silver, and gold
  • most are hard and shiny
  • are good conductors of electricity
  • form colorful compounds
  • less reactive than metals in Groups 1 and 2
Term
What are synthetic elements?
Definition

Elements that follow uranium are made-or synthesized- when nuclear particles are forced to crash into one another

Term
particle accelerators
Definition

move atomic nuclei faster and faster until they have reached very high speeds

Supporting users have an ad free experience!