Ukuran huruf
Lembar kerjaL11 - Alkali metals
Total soal: 10
Worksheet time: 6mins
The "properties" of a material are...
...its characteristics, features, and behaviour.
...what the material owns.
...only what it looks like.
...only how it behaves in certain situations.
The compactness of the particles in a substance - how much mass there is in a certain volume.
Density
Weight
Denseness
Heaviness
The temperature at which a solid changes into a liquid as it is heated.
Melting point
Boiling point
Liquidisation point
Melting level
A _____________ property is how a substance behaves when it undergoes a chemical change, e.g. its flammability or pH.
physical
major
chemical
periodic
A column in the periodic table is called a _________
Period
Group
Element
Pillar
How violently or vigorously a substance will react. The more reactive it is, the more vigorous its reactions will be.
Reactivity
Reactiveness
Chemical potential
Reaction likelihood
A scale that measures how acidic or alkaline a substance is.
Reactivity scale
Alkali scale
Acid scale
pH scale
Tick the boxes that show chemical properties.
pH value
Reactivity
Melting point
Flammability
Conductivity
Tick the boxes that show physical properties.
Boiling point
Reactivity
Density
Malleability
pH value
Which is the best description of the nucleus in an atom?
The part of the atom where the protons and neutrons live
The bit in the middle
The central part of the atom which carries most of the mass, made up of protons and neutrons
The large cluster of particles found in the centre of the atom
