
2A: Ionic and Covalent bonds
Presentation
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Science
•
9th Grade
•
Medium
+7
Standards-aligned
Marissa Brown
Used 32+ times
FREE Resource
3 Slides • 17 Questions
1
2
Ionic compounds have very strong bonds. This causes ionic compounds to have high melting points and boiling points
Strong bonds
Ionic compounds are made of ions. When you dissolve ionic compounds in water, the ions become mobile and can conduct an electric current
Conductive
Ionic compounds have a crystal lattice structure and are generally solid at room temperature. Think about table salt!
Crystalline
IONIC COMPOUNDS
3
Covalent compounds have weaker bonds ionic compounds. This causes covalent compounds to have low melting points and low boiling points
Weak bonds
Ionic compounds are not made of but are composed of atoms. When you dissolve covalent compounds in water they DO NOT dissociate into ions and therefore, do not conduct a current.
Conductive
Covalent compounds have a Lewis Structures that show their arrangement. They are generally solids, liquids and gases and room temperature. If a solid then dull and brittle
COVALENT COMPOUNDS
4
Multiple Choice
What two types of atoms make a covalent bond?
2 Nonmetals
1 Metal and 1 Nonmetal
2 Metals
2 Noble Gases
5
Multiple Choice
Salt is an example of what?
ionic compound
covalent compound
6
Multiple Choice
The above atoms are sharing valence electrons, what type of bond is this?
Ionic
Covalent
Hydrogen
James
7
Multiple Choice
What type of elements form cations?
metals
nonmetals
metalloids?
8
Multiple Choice
When atoms gain or lose electrons, they are called
Isotopes
Atoms
Ions
Electrons
9
Multiple Choice
Why do all bonds form?
to fill the outermost energy level
so an atom can be unstable
so the number of protons and electrons can equal.
so they can gain neutrons.
10
Multiple Choice
How are ionic bonds formed?
transfer of electrons
sharing of electrons
11
Multiple Choice
Which compound has high melting point?
Ionic
Covalent
12
Multiple Choice
Which of the following can conduct electricity in solid state?
metals
covalent compound
ionic compound
13
Multiple Choice
Which compound can conduct electricity in molten and aqueous state?
Ionic compound
Covalent compound
14
Multiple Choice
Covalent bonds can be found as _______?
only solids
solids and liquids
solids, liquids and gases
15
Multiple Choice
What is a property of covalent bonds?
They are pretty
They have a LOW melting point
They can dissolve in water
16
Multiple Choice
What is a property of covalent bonds?
They cannot be dissolved in water.
They have a high melting point
They are orange
17
Multiple Select
Choose the properties that describe ionic compounds. (Hint there are 3 three correct answers)
high melting point
low melting point
solids
dissolve in water
bond between 2 nonmetals
18
Multiple Choice
Na Br
Ionic
Covalent
19
Multiple Choice
K Br
Ionic
Covalent
20
Multiple Choice
C O
Ionic
Covalent
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