NOVA:HUNTING THE ELEMENTS QUESTIONS AND ANSWERS. Buy Quality
Materials
What is the number of subatomic particles in gold?
protons/electrons - 79
neutrons - 118
Give one property of gold.
doesn't rust or tarnish
How much gold is in one ton of the mined rock?
one ounce
How much is each truckload of ore worth, once the gold is extracted?
$720,000
What determines how reactive an element is?
how willing it is to share electrons
What are the noble metals
Pd, Ag, Os, Ir, Pt, Au
Why is gold so heavy?
it is dense
What is the number of subatomic particles in copper?
protons/electrons - 29
neutrons - 35
List three uses of copper.
pennies, infrastructure, electronics, plumbing
Give one property of copper.
conducts electricity
What alloy does tin make when mixed with copper?
bronze
How are atoms arranged in pure metals?
orderly rows and columns
Why isn't pure copper used for bells instead of bronze?
it is softer and can be bent; not the same sound
How much would you have to zoom in on a map of the United States to replicate
the power of an electron microscope?
100,000,000
Why is the microscope wrapped in acoustic blankets?
absorb and reflect sound
What part of the atom is actually visible under the microscope?
the outermost boundaries of an atom
What do protons determine about an element?
the name of the element
What is the number of protons called?
atomic #
Give an example of a real life object made from calcium.
bone
, Give an example of a real life object made from bismuth.
stomach medicine
Give an example of a real life object made from bromine.
soda
What is a family of elements?
elements of similar properties
Where did the noble gases get their name?
don't like to react to other elements
What do electrons determine?
reactivity
Give the number of atomic particles in chlorine.
protons and electrons - 17
neutrons - 18
Chlorine wants to ________ one electron, becoming an _________.
Chlorine wants to take one electron, becoming an ion.
Why do alkali metals and halogens react so strongly with other elements?
halogens want to lose a valence electron.
What do sodium and chlorine make when combined?
sodium chloride
What state of matter is sodium?
solid
Is sodium reactive or stable?
reactive
Name a practical use for sodium.
artificial rubber
What state of matter is chlorine?
gas
Is chlorine reactive or stable?
reactive
Name a practical use for chlorine.
pool cleaner
What state of matter is sodium chloride?
solid
Is sodium chloride reactive or stable?
stable
Name a practical use for sodium chloride.
salt
What is ANFO?
Ammonium Nitrate Fuel Oil
What do each of the spikes on the ion chromatograph represent?
different elements in different locations
This is the chemical reaction of the ANFO explosion. Explain what happens
during this reaction to release so much heat energy.
C+NH4NO3->H20+N2+O2
Materials
What is the number of subatomic particles in gold?
protons/electrons - 79
neutrons - 118
Give one property of gold.
doesn't rust or tarnish
How much gold is in one ton of the mined rock?
one ounce
How much is each truckload of ore worth, once the gold is extracted?
$720,000
What determines how reactive an element is?
how willing it is to share electrons
What are the noble metals
Pd, Ag, Os, Ir, Pt, Au
Why is gold so heavy?
it is dense
What is the number of subatomic particles in copper?
protons/electrons - 29
neutrons - 35
List three uses of copper.
pennies, infrastructure, electronics, plumbing
Give one property of copper.
conducts electricity
What alloy does tin make when mixed with copper?
bronze
How are atoms arranged in pure metals?
orderly rows and columns
Why isn't pure copper used for bells instead of bronze?
it is softer and can be bent; not the same sound
How much would you have to zoom in on a map of the United States to replicate
the power of an electron microscope?
100,000,000
Why is the microscope wrapped in acoustic blankets?
absorb and reflect sound
What part of the atom is actually visible under the microscope?
the outermost boundaries of an atom
What do protons determine about an element?
the name of the element
What is the number of protons called?
atomic #
Give an example of a real life object made from calcium.
bone
, Give an example of a real life object made from bismuth.
stomach medicine
Give an example of a real life object made from bromine.
soda
What is a family of elements?
elements of similar properties
Where did the noble gases get their name?
don't like to react to other elements
What do electrons determine?
reactivity
Give the number of atomic particles in chlorine.
protons and electrons - 17
neutrons - 18
Chlorine wants to ________ one electron, becoming an _________.
Chlorine wants to take one electron, becoming an ion.
Why do alkali metals and halogens react so strongly with other elements?
halogens want to lose a valence electron.
What do sodium and chlorine make when combined?
sodium chloride
What state of matter is sodium?
solid
Is sodium reactive or stable?
reactive
Name a practical use for sodium.
artificial rubber
What state of matter is chlorine?
gas
Is chlorine reactive or stable?
reactive
Name a practical use for chlorine.
pool cleaner
What state of matter is sodium chloride?
solid
Is sodium chloride reactive or stable?
stable
Name a practical use for sodium chloride.
salt
What is ANFO?
Ammonium Nitrate Fuel Oil
What do each of the spikes on the ion chromatograph represent?
different elements in different locations
This is the chemical reaction of the ANFO explosion. Explain what happens
during this reaction to release so much heat energy.
C+NH4NO3->H20+N2+O2
