Exploring Chemistry Chapters 1-4 Flashcards
The name hydrogen means
water generator
Goodyear discovered vulcanized rubber when he
heated sulfur with raw rubber
Which symbol belongs in the circled box?
H (Hydrogen)
What was the primary goal of alchemist?
to make gold from cheap metals.
Steel is quenched by
heating it in an oven for several days
What is the symbol for Oxygen?
O
The single most important compound of sulfur is _______________ acid.
sulfuric
Hydrogen is an ____ element on earth.
abundant
Ancient people made musical instruments of
copper alloy
The seven ancient metals are gold, silver, copper, iron, tin, lead, and _______.
mercury
Which symbol belongs in the circled box?
Cl (Chlorine)
Which of these forms of iron is the purest?
cast iron, charcoal, steel, or wrought iron
wrought iron
Cavendish released the gas hydrogen by exposing metals to
hydrochloric acid
Is 14-karat gold pure gold?
no
Gold, silver, and _______________ are known as the coinage metals.
copper
Which symbol belongs in the circled box?
C (Carbon)
Charcoal is
wood that has been heated without oxygen
The element that charcoal, coal, graphite, and diamond have in common is ___.
carbon
Cast iron, steel, and wrought iron differ only in the amount of ____ they contain.
carbon
Bronze and brass are both alloys that contain
copper
What is the symbol for Carbon
C
Another name for mercury is
quicksilver
What is the symbol for Cl
Chlorine
Which symbol belongs in the circled box?
N (Nitrogen)
If a mixture of hydrogen and oxygen are exposed to a flame
a violent explosion results
What is the symbol for Nitrogen?
N
The first metal mentioned in both the Old and New Testaments is
gold
Ancient people hammered the soft, pure iron from _______________ into useful tools.
meteorites
What is they symbol for Hydrogen?
H
The Statue of Liberty has a skin of
copper
The Royal Society was formed to
communicate new ideas rapidly
The gas that Priestley released by heating a mercury compound was
oxygen
State the chemical formula: __ water __ carbon dioxide __ hydrochloric acid
H2O, CO2, HCl
The Middle Ages are also known as the _______________ Ages.
Dark
How does carbon from charcoal help during the smelting process?
frees iron from oxygen’s grip by combining with the oxygen
Which symbol belongs in the circled box?
O (Oxygen)
