Properties of Metals
What does the property "strong" mean?
a) It snaps when it is bent
b) It soaks up water
c) It does not break easily
c) It does not break easily
Which metal is most commonly used for electrical wires?
a) Steel
b) Copper
c) Mercury
b) Copper
True or False. All metals conduct electricity.
True!
How many metals in our experiment were MAGNETIC?
One-steel paperclips
What property describes a metal that is attracted to magnets?
Magnetic/ Magnetism
Which metal has the property of being lightweight?
Hint: soda cans are made from this metal
Aluminium
What materials in our experiment DID NOT conduct electricity?
Wood and Plastic
What two materials floated in our experiment?
hint: we tested steel, copper, aluminium, wood, and plastic
Aluminium and wood
True or false. All metals sink in water.
False- aluminium is very lightweight and floats on water.
What are two reasons that gold and silver are used to make jewellery?
1. Shiny
2. Don't rust easily
3. Valuable
In our experiment, how did we know that a material conducted electricity?
The light turned on
Do all plastic objects sink in water?
No!
If I want to make a power cord, what property should I look for in a metal?
Electrical conductivity
Which metals are magnetic?
Iron and steel
What do we call a material that doesn't conduct electricity? (doesn't allow electricity to flow through it)
Insulator
If only three metals are magnetic (iron, cobalt, nickel), why were our steel paperclips attracted to the magnet?
Steel is made of iron and carbon
What is the name of the property that means the metal can bend and be rolled without breaking?
Malleable
Name 3 different objects made out of aluminium
Planes
Soda cans
Aluminium foil
Small boats
Power lines
Bikes
Phone and laptop shells
What does "electrical current" mean?
The flow of electricity/electrons
How do steel ships still float even though they are heavy?
Ships are full of air (hollow)- they are not a solid steel block.
The weight of the boat is spread out over a large space and displaces a lot of water.
The water pushes the boat up with a force called buoyancy.