Matter Flashcards
What are the five main classes of materials?
Ceramic
Metal
Glass
Fibres
Plastic
Alloy
What’s the properties of ceramic?
Made from clay
Poor conductor of electricity
Hard
Can be moulded into shapes
Does not corrode
Has a high melting point
Fragile
What’s the properties of metal?
Shiny
Good conductor of electricity
Good conductor of heat
Can be moulded into shapes
Can be bent without breaking
What’s the properties of glass?
Transparent
Poor conductor of electricity
Poor conductor of heat
What’s the properties of fibres?
Can be spun into threads and woven into fabrics
Able to absorb dyes
Poor conductor of electricity
Poor conductor of heat
What’s the properties of plastic?
Its lightweight
Does not corrode
Can be moulded into shapes
Has a low melting point
Poor conductor of electricity
Poor conductor of heat
What are the physical properties of materials?
Electrical conductivity
Thermal conductivity
Melting point and Boiling Point
Strength
Hardness
Flexibility
Density
What is electrical conductivity?
It is the measure of how easily an electric current flows through it.
What is thermal conductivity?
It is the measure of how easily heat flow through it.
What is strength?
Its ability to support a heavy load without changing its shape permanently
What is hardness?
Its the resistance of a material to wear and tear, and scratches
What is flexibility?
It is the ability to bend without breaking, and return to its initial shape.
What is density?
It is the mass per unit volume
What are alloys?
They are a mixture of metals with other elements
Compared to metals, alloys tend to be…
Stronger
Harder
Have a lower melting point
what apparatus are used to measure volume?
Beaker
Measuring cylinder
Pipette
Burette
Syringe
What apparatus are used to measure length?
Measuring tape
Digital Calipers
What can Digital Calipers measure
It can measure internal and external diameters
