Homogenous Mixture – Chemistry Hw
The key terms of Chemistry Homework include, Homogenous Mixture.
Name 5 other alloys that do not contain gold
Pewter, steel, bronze, solder, amalgam
Alloy
A homogenous mixture of one or more metals
Brass
Alloy of copper and zinc
White gold
An alloy of gold and silver metals, such as nickel, zinc, and silver
Rose gold
An alloy of gold with copper in it
24K gold
Pure gold
12K gold
An alloy of gold that is just a bit more than 1/2 pure gold
Gold-plated jewelry
A cheap metal with an extremely thin layer of gold coating it
Gold-filled jewelry
A cheap metal with a very thin layer of gold coating it
Before you buy gold, what other information would you want to know?
What karat of gold it is
Properties of gold
Great thermal conductor
Great electrical conductor
Very unreactive
Very malleable and soft
High density
Beautiful
Explain the mass difference (Or lack thereof) between the original penny and the “gold” one
If there was a difference, the mass after is reader than the mass before because zinc was added to the penny.
If there was no difference, it was because too little zinc was added to be measurable noticeable.
What is the drawback to gold-plated and gold-filled jewelry?
The gold wears off
What is the drawback to 24K gold jewelry?
It is too soft so the jewelry is easily damaged
An alloy is an example of a
Homogenous mixture
Why is gold expensive?
It has a low supply and a high demand
Name a metal more expensive than gold
Platinum
Name uses of gold
Jewelry
Coins
Computer chips and motherboards Gold leaf to decorate books, cakes, etc.
Name uses of brass
Pipes
Door knobs, keys, locks, and gears
Trophy plates
Candles sticks
Bed frames
Ammo cases
Musical instruments
Zippers and buttons
Name 5 other alloys that do not contain gold
Pewter, steel, bronze, solder, amalgam
Alloy
A homogenous mixture of one or more metals
Brass
Alloy of copper and zinc
White gold
An alloy of gold and silver metals, such as nickel, zinc, and silver
Rose gold
An alloy of gold with copper in it
24K gold
Pure gold
12K gold
An alloy of gold that is just a bit more than 1/2 pure gold
Gold-plated jewelry
A cheap metal with an extremely thin layer of gold coating it
Gold-filled jewelry
A cheap metal with a very thin layer of gold coating it
Before you buy gold, what other information would you want to know?
What karat of gold it is
Properties of gold
Great thermal conductor
Great electrical conductor
Very unreactive
Very malleable and soft
High density
Beautiful
Explain the mass difference (Or lack thereof) between the original penny and the “gold” one
If there was a difference, the mass after is reader than the mass before because zinc was added to the penny.
If there was no difference, it was because too little zinc was added to be measurable noticeable.
What is the drawback to gold-plated and gold-filled jewelry?
The gold wears off
What is the drawback to 24K gold jewelry?
It is too soft so the jewelry is easily damaged
An alloy is an example of a
Homogenous mixture
Why is gold expensive?
It has a low supply and a high demand
Name a metal more expensive than gold
Platinum
Name uses of gold
Jewelry
Coins
Computer chips and motherboards Gold leaf to decorate books, cakes, etc.
Name uses of brass
Pipes
Door knobs, keys, locks, and gears
Trophy plates
Candles sticks
Bed frames
Ammo cases
Musical instruments
Zippers and buttons