Chapter 12 Study Guide Flashcards
What is the difference between treated and untreated rubber? What effect does this treatment have in the rubber?
Treated - bends easily and is waterproof.
Untreated - brittle and it cracks in the cold.
Explain how a chemist is able to separate a fossil from limestone without damaging it.
They put vinegar on the limestone. The limestone reacts quickly to the vinegar and it dissolves, but the fossil does not react quickly.
What is “combination reaction”?
It’s elements or compounds that come together to form new compounds.
What is “decomposition reaction”?
It’s when compounds split apart to form smaller compounds or elements.
What is “replacement reaction”?
It’s when parts of a molecule switch.
Alexander Fleming is most known for the discovery of what?
Penniciline
What are the strongest acids on the color spectrum when tested with indicator paper?
Orange
Red
What are the strongest bases on the color spectrum when tested with indicator paper?
Green
Blue
Purple
What are some polymers created in the lab?
Plastic
Nylon
Concrete
What indicates a chemical change?
The change of color.
What is combustion?
The process of burning.
In a chemical reaction what does matter do?
It is neither created nor destroyed.
