Show:
Rusting
Metal or Alloy?
Properties of Metals and Alloys
Experiments
Random
100
Iron would rust if exposed to oxygen?
Yes.
100
Copper. Is this an alloy or metal?
Metal
100
Is a mixture made of two or more elements
Alloy
100
What type of reaction occurs when iron and oxygen combine?
rust
100
This is the change in a chemical reaction, reactants or products?
Reactants
200
What is more likely to rust, alloy or metal?
Metal
200
Bronze. Is this alloy or metal?
Alloy, it is made up of copper and tin.
200
This means the metal can be drawn out into a thin wire.
ductile
200
What was the acid we used in our experiments with metals?
vinegar
200
What does malleable mean?
It means that you can hammer the metal into a sheet.
300
Rusting occurs when an object is exposed to carbon. True or false.
False, rusting occurs what the element is exposed to oxygen
300
Stainless steel? Is this an alloy or metal?
Alloy, it has iron, carbon, and nickel
300
True or False, Alloy wires are used for electricity.
No, metal wires are used.
300
What was a change that happened because we added vinegar to steel wool?
Heat, steel wool rusted, different color
300
What is the ending result formed in a chemical reaction called, reactant or product?
Product
400
Is rusting a product or reactant?
Rusting is a product.
400
Pure gold, alloy or metal?
Metal
400
Why are alloys used more than pure metals?
Because they are stronger and less likely to react with air or water.
400
What happened to our pennies when we left them our overnight?
They turned a blueish-green color.
400
Oxygen and water would be reactants to metal, True or False?
True
500
This is why stainless steel does not rust.
It does not rust because it is an alloy.
500
Iron, metal or alloy?
Metal
500
Name 2 properties of metals.
1. Can be bent 2. Solid 3. Conducts electricity 4. Conducts heat 5. Shiny
500
Explain why the steel wool rusted.
The steel wool was cleaned off by the vinegar. It was exposed to oxygen which made it rust quicker.
500
Name two alloys that might be around your house.
Sterling silver, bronze, brass