Vocabulary
Define Corrosion
The gradual wearing away at metal as a result of a chemical reduction in which metal is changed into a metallic compound.
"The process of corroding metal, stone, or other materials."
After a mining operation is dumping rubble back into the hole an easy solution
NO
How can rust be prevented? Name an example that Ms.Pulver mentioned
Paint !
What are the two most common elements in Earth Crust?
Oxygen and Silicon
False
What are ores?
Naturally occurring rock from which a useful metal or mineral is recovered.
Oxygen is what % of Earth's crust?
46%
What type of bond is formed when oxygen reacts with a metal? Explain the process that can occur when this type of bond is formed.
Ionic Bond (oxygen + metal); When nonmetals remove valence electrons from metals the metals can gradually wear away in a process called corrosion.
Corrosion- The process of corroding metal, stone, or other materials.
What color is silver when it rusts?
What color is copper when it rusts?
Black
Green
What are the physical properties of non metals?
soft, nonlustrous, nonmalleable, non ductile, nonsonorous, and not good conductors of heat and electricity!
a material may be stretched into a wire is an example of what?
Ductility
Dry waste exposed to ______ produces acids and toxic metal compounds
Water
What two things must be present in order for rust to form?
Oxygen and Moisture
Which metal is liquid at room temperature?
Mercury
What makes the diamond hard? What element?
Carbon is a solid non-metal element.
(Pure carbon can exist in very different forms. The most common two are diamond and graphite)
What us extracting a metal from an ore called?
Reduction
What are the three methods of separating ore from metal?
Roasting, electrical currents and separating with magnets
Name highly reactive metals
Magnesium, Sodium, Potassium, and Zinc
What is it called when metal can produce sound when struck?
Sonorous
Is copper reactive
Yes
A bond between a metal and non metal is a ____
ionic bond
Name four common groups of ores
Sulfides, sulfates, silicates, and oxides
What are six characteristics of metals?
Lustrous, Malleability, ductility, sonorous, hard, and good conductors of heat and electricity.
Why do some metals have higher melting points than others?
Metals that have greater number of valence electrons form strong bonds that require a large amount of energy to break.
Would you say gold is reactive or non reactive?
Nonreactive