In scientific terms, a material that is not strong is known as a weak material
Which of the following is the definition of ductile?
Can be easily broken
Can be stretched out into wires
Can be bent, hammered or squashed into shape
Metals are good conductors of heat and electricity.
Metals are always shiny.
How many nearest neighbours of opposite charge does each chloride ion in sodium chloride have
4
5
6
The charge on a sulfate ion is +.
A negative bromine atom is known as a ion.
The \(OH^{-}\) ion is known as a
Hydroxide ion
Hydroxyl ion
Hydride ion
Ionic lattices conduct electricity in their solid form
Which of the following is an example of a giant covalent substance?
Table salt
Diamond
Water
Diamond is a good conductor of electricity
All covalent substances have low melting points
Which of the following is diamond not used for?
Jewellery
Drill bits
Industrial cutting
Lubricant
Diamond has a tetrahedral unit cell.
Each carbon is bonded to other carbon atoms in diamond.
Graphite is made up of layers of carbon-carbon bonds
Ionic substances have high low( high, low ) melting points.
What is this \(C_60\) molecule commonly known as?
Carbon nanotubes are made out of diamond