The study of how to produce and control incredibly tiny structures
What is nanotechnology
100
The size of nanometer
What is 10-9 meter
200
The location of metals in the periodic table
What is left of the periodic table
200
Crumble into powders
What is brittle
200
The two most important metalloids
What is silicon and germanium
200
The name of the tiny structures
What is nanoparticles
200
The angle a drop makes to its surface is known as
What is contact angle
300
Shine when polished
What is lustrous
300
The three different forms of carbon, called.
What is allotropes
300
The physical properties of metalloids
What is act like non-metals in most ways but they do have some properties that are more like those of metals.
300
Water-loving and water-fearing
What is hydrophilic and hydrophobic
300
The property of a material to become electric charged in sunlight
What is photocatalytic
400
The physical properties of metals
What is lustrous, dense, thermal and electrical conductors, malleable and ductile, lustrous, solid at room temperature (except mercury). (Any four of the above)
400
List the three different types of carbon
What is amorphous carbon, diamond, graphite.
400
The use of metalloids
What is to build electronic components
400
The name and use of shape memory alloy
What is nitinol and stent
400
The property of carbon nanotubes
What is hundreds of times stronger than steel and are much lighter.
500
List three types of alloys and their composition
What is steel (iron and carbon), brass (copper and zinc), bronze (copper and tin) and stainless steel (iron, carbon and chromium.
500
The reason why carbon is an unusual element
What is its atoms combine with other carbon atoms and with atoms of other elements to form lattices, long chains and rings. Over 90% of all known compounds contain carbon, some of which are essential to life on Earth. Carbon exists in molecules in every living thing and anything that was once part of a living thing.
500
Cool a metal rapidly by dropping it into a beaker of water
What is quenching
500
The arrangement of carbon atoms in a carbon nanotube
What is the carbon atoms are arranged in flat sheets of hexagons. The sheets are then rolled into tubes.
500
The reason why spherical drops are better than other drops in cleaning dirt of a surface.
What is spherical shapes pick up the dirt particles and roll away with them. Less spherical drops tend to re-deposit the dirt back onto the surface.