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Unit Six RtI - States of Matter

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Question 1
1.

Create the Lewis model for CS2. Describe the shape and polarity.

Question 2
2.

Create the Lewis model for CH2F2. Describe the shape and polarity.

Question 3
3.

What shape is this?

Question 4
4.

What shape is this?

Question 5
5.

What's wrong with the way the student determined the polarity on the following?

Question 6
6.

What force holds the particles of the table together?

Question 7
7.

What forces are the most likely to be overcome to break through a table?

Question 8
8.

What is the likely force that would be able to overcome the forces holding the table together.

Question 9
9.

Circle the image that best represenst an ionic solid.

Question 10
10.

Circle the image that best represents a metallic solid.

Question 11
11.

Circle the image that best represents a molecular solid. Explain how you knew.

Question 12
12.

Why are metals good conducters of electricity?

Question 13
13.

Why aren't metals brittle when struck by a hammer?

Question 14
14.

What is a definition of viscosity?

Question 15
15.

Which of the following best represents the ranking of strength (most to least) for the intermolecular forces?

Question 16
16.

Describe the difference in strength between intermolecular forces and intramolecular forces.

Question 17
17.

Question 18
18.

Question 19
19.

Question 20
20.

Question 21
21.

What is cross-linking in a polymer?

Question 22
22.

Question 23
23.

How does cross-linking change the properties of a polymer?

For the following four questions, pick with combination would be the best fit.

H2O and HF

HCl and HCl

H2 and HCl

H2 and N2
Question 24
24.

Which combination of molecules is likely to result in dispersion forces as the strongest intermolecular force?

Question 25
25.

Which combination of molecules is likely to result in dipole - dipole forces as the strongest intermolecular force?

Question 26
26.

Which combination of molecules is likely to result in dipole - induced dipole forces as the strongest intermolecular force?

Question 27
27.

Which combination of molecules is likely to result in hydrogen bonding as the strongest intermolecular force?

Select the polar molecules.
CO2
H2O
NH3
BF3
CH4
HCl
What is the strongest intermolecular force present in a sample of HCl?
Covalent bonding
Hydrogen bonding
Dispersion forces
Dipole-Dipole forces
Ionic bonding
Dipole-induced dipole forces
Metallic bonding
What is the strongest intermolecular force present in a sample of NH3?
Covalent bonding
Hydrogen bonding
Dispersion forces
Dipole-Dipole forces
Ionic bonding
Dipole-induced dipole forces
Metallic bonding
What is the strongest intermolecular force present in a sample of CH4?
Covalent bonding
Hydrogen bonding
Dispersion forces
Dipole-Dipole forces
Ionic bonding
Dipole-induced dipole forces
Metallic bonding
Select the true statments
Metals are poor conductors of electricity because they hold their electrons tightly.
Polymers with a lot of cross-linking are usually rigid.
Ionic compounds tend to be brittle.
Metals tend to be brittle.
A substance with hydrogen bonding usually has higher viscosity than a similar molecule without hydrogen bonding.
A nonpolar substance with weak dispersion forces tends to have high surface tension.