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WorksheetsPractice 1
Total questions: 20
Worksheet time: 25mins
What type of elements form covalent bonds?
Metals
Non Metals
Metalloids
Nobel Gas
When a covalent bond forms _______________ are shared.
protons
nutrons
valence electrons
quarks
Compounds have _________________ properties, compared to the elements that form them.
similar
different
A ___________________ is the smallest unit of a compound.
atom
proton
electron
molecule
How many valence electrons does Oxygen (O) have?
6
8
15
16
How many atoms of hydrogen are in a sugar molecule with the formula C6H12O6
12
6
24
18
Atoms that are _____________ will form bonds.
stable
unstable
An atom of nitrogen (N) has _______ open bonding sites.
5
4
3
8
Polar molecules form due to ___________ sharing of valence electrons.
equal
unequal
greater
group
Valence electrons are located _____________ the nucleus of an atom
close to
farthest from
randomly around
The weakest covalent bond is a _____________.
single bond
double bond
triple bond
polar bond
Polar substances like water are good at dissolving ___________.
other polar substances
non polar substances
all substances
no substances
A triple covalent bond forms when two atoms share ____________.
2 pair of electrons
4 total electrons
3 pair of electrons
3 total electrons
Which statement best describes the relationship between atoms & molecules.
molecules are made of atoms that are chemically bonded together.
atoms are made of molecules that are chemically bonded together.
molecules are made of a mixture of atoms and compounds.
atoms are made of protons, neutrons & electrons.
Which statement best describes the a compound. Check all that apply.
atoms are the smallest unit of a compound.
the smallest unit of a compound is a molecule.
compounds are chemically different from the elements that compose them.
when atoms combine to form a molecule of a compound they become stable.
Which statement describes the model that shows a compound.
Model X shows a compound because there are two different types of atoms
Model X shows a compound because two different atoms are chemically bonded together.
Model Y dhows a compound because there is more than one type of atom.
Model Y shows a compound because each pair of matching atoms can form a chemical bond.
Why do all bonds form?
so the number of protons equals the number of electrons
so an atom can become unstable
to fill the outermost energy level
Which of the following is true about Covalent (non-polar) bonds? (select ALL true options)
High melting point
Low melting point
Can dissolve in water
Cannot dissolve in water
Can conduct electricity
This Lewis Dot Structure for water is correct
True
False
