WorksheetsProperties of Ionic and Covalent Compounds
Total questions: 50
Worksheet time: 50mins
What part of an atom is involved in chemical bonding?
protons
electrons
valence electrons
nucleus
How many valence electrons does potassium have?
3
2
5
1
How many valence electrons does phosphorus have?
3
2
5
1
In a covalent bond, atoms __________ electrons.
share
borrow
transfer
switch
A substance that is a gas at room temperture is which type of compound?
ionic
covalent
chemical
glucose
In general, these compounds have extremely high boiling points and are not soluble in water.
Ionic
Covalent
Metallic
Which of the following describes covalent bonds?
Bonds that form because oppositely charged ions are electrostatically attracted to each other.
Electrons are shared because neither atom has a large enoug h electronegativy to steal the other atoms valence electrons.
Electrons are transferred between atoms because because one atom has a large enough electronegativy to steal the other atoms valence electrons.
What property is describing an ionic compound?
shares electrons
high melting point
weak bonds
made up of nonmetals.
Why do atoms form bonds?
to attain a noble gas configuration
to increase their mass
to increase their atomic number
to attain an alkali metal configuration
Solid compound conducts electricity.
ionic compound
covalent compound
metallic compound
What is an anion?
a metal with a negative (-) charge
a non-metal with a negative (-) charge
a metal with a positive (+) charge
a non-metal with a positive (+) charge
Covalent Compounds HAVE a positive (+) or negative (-) charge
True
False
Que onda, Hagerman?
What was that now?
With the exception of the first five elements (which are too small), all other atoms are stable when they have how many valence electrons?
1
9
8
16
What charge will the ion have when an atom gains electrons?
no net charge (neutral)
a positive charge
a negative charge
a full charge
Which of the following is a characteristic property of ionic compounds?
They form hard, brittle crystals with characteristic shapes
They have low melting points
They have low boiling points
They contain no charged particles
In what form can an ionic compound conduct electricity?
when dissolved in water
as a solid
as a crystal
when melted
Elements that are in the same group have the same _____.
number of valence electrons
number of periods
number of energy levels
number of total electrons
Elements that have the same number of valance electrons have _____.
similar physical properties
similar chemical properties
the same physical state
to be noble gases
Which one of these properties is NOT a characteristic of ionic compounds?
high melting and boiling points
malleable
crystal lattice structure
form electrolytes
What type of forces hold on an ionic lattice together?
Electrostatic attraction forces
Covalent bond
Metallic bond
Van der Waals forces
Which of these properties could brass have?
A low boiling point and it conducts electricity when dissolved in water
A high melting and it conducts electricity when liquid
A high boiling point and it conducts electricity when solid
Ionic compounds conduct electricity when dissolved in water. Which statement below best explains the property?
Ions are separated from each other and are free to move.
Electrons are separated from each other and are free to move.
Ionic compounds can conduct electricity when dissolved.
Their molecules are separated from each other.
The reason that a sodium ion bonds with a chlorine ion is because _____.
sodium transfers an electron to chlorine
oppositely charged ions form a strong electrostatic attraction
ions are the same size
the ions have a full outer shell of valence electrons
In a lattice structure, oppositely charged ions _____.
weakly repel each other
have a strong electrostatic attraction
keep a close i-on each other...bwahahahaha
are weakly attracted to each other
Is it ionic or covalent?
A material that melts at 250oC and is insoluble in water.
Ionic
Covalent
Is it ionic or covalent?
It is brittle, and has a regular repeating structure.
Ionic
Covalent
Is it ionic or covalent?
A material that forms when atoms gain and lose electrons.
Ionic
Covalent
Which of the following describes covalent bonds?
Bonds form because of opposite charges
Valence lectrons are shared to fill outer electron shells
Valence lectrons are transferred between atoms
Covalent bonds are magical
A magnesium ion has the formula Mg2+. What is the electron arrangement of the ion?
1s2 2s2 2p2p2p2
1s2 2s2 2p2p2p2 3s2
1s2 2s2 2p2p2p2 3s2 3p1p1p0
1s2 2s2 2p2p2p2 3s2 3p2p2p2
Which of these statements about a negative ion is true?
It has an equal number of protons and electrons
It has more protons than electrons
It has more electrons than protons
Properties of ionic compounds include:
brittle, conducts electricity (aqueous state), high melting points
usually gas or liquid, relatively low melting points, does not conduct electricity
shiny, malleable, ductile, conducts electricity, usually a solid
Why do atoms form ions?
To achieve a full outer electron shell (achieve stability)
To become positive
To become negative
To become neutral
Sulphur is in Group 16 of the periodic table. What is the formula of its ion?
S6-
S6+
S2-
S
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.
Ions arranged in a pattern creating a regular cubic shape is called a ___________ __________.
crystal lattice
element cube
opposite ion
square compound
Why don't covalent (molecular) compounds conduct electricity when they are dissolved?
They do not break up into ions.
They break up into ions.
They do not dissolve in water.
They have high melting points.
Given the charge on C, which of the other three could be a cation?
A
B
none of these
D
