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WorksheetsPrep 1 unit 1
Total questions: 11
Worksheet time: 23mins
What is the number of elements and atoms in ammonia molecule ...... and .......
Two - Four
Three - One
Two - Two
One - One
It is the smallest part of matter which can exist freely and it has the properties of matter. - It is the building unit of matter.
Atom
Molecule
Element
Compound
Properties of molecules
Molecules of matter are in a continuous motion
There are intermolecular spaces among the molecules of matter
There are intermolecular forces among the molecules of matter
All of the previous
Solutions that allow electricity to pass through
Acidic solutionsn
alkaline solutions
some salt solutions
All of the previous
They react with oxygen very fast, and lose their metallic lustar as sodium and potassium
Very active metals
Less active metals
Inactive metals
All of the previous
They react with oxygen very fast, but take several days to rust and corrosion as iron
Very active metals
Less active metals
Inactive metals
All of the previous
It is the simplest pure form of matter which can't be analyzed chemically into simpler form by simple chemical methods
Atom
Molecule
Element
Compound
What's the symbols of elements
Sodium - Neon - Nitrogen
Na - N - Ne
Na - Ne - N
N - Ne - Na
Ne - N - Na
.......... are almost not completely free
Solid
Liquid
Gas
A piece of metal has a mass of 189 gram, volume of 3 cm3 Calculate its density.
63 gm/cm3
0.015 gm/cm3
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