Hominin toolkit worksheet | Science homework help

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Directions

For this assignment, you are to fill out the Hominin Toolkit Worksheet

Actions with information about each of the different toolkits we will be studying in this module and Module 6. The information about the tool types should come from our Explorations textbook and our course module pages. Any information required by the assignment that is not provided in the textbook or in our module pages you are free to find using the internet, but you should start with the information provided in our class. In addition to the information required on the worksheet, you should provide an image of each toolkit from the internet immediately below the name of the toolkit.

Please note that the assignment is due at the end of the next module, but you should start filling the worksheet out now with the tools we are learning about in this module. The next unit page is a video lecture on the earliest hominin tools and is where you should start filling out your worksheet. We will continue studying this topic for the next several weeks.

The worksheet is a Microsoft Word document and you will need to have Word installed on your computer to complete this assignment. If you do not have Microsoft Word, you can install Microsoft Office (which includes Word) for free. The instructions can be found here.

Early Hominin Tool Use

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July 1, 2023

61. Which of the following statements regarding intermolecular forces is incorrect?

A)Hydrogen bonding is the strongest of the intermolecular forces.

B)London dispersion forces increase with increasing molecular size.

C)Dipole-dipole forces are present in all atoms and molecules.

D)In order for a pure substance to participate in hydrogen bonding, it must have hydrogen bonded to F, O, or N.

E)Intermolecular forces are much weaker than bonding forces.

62. Which of the following statements regarding intermolecular forces is incorrect?

A)Hydrogen bonding is the strongest of the intermolecular forces for substances of similar molar mass.

B)London dispersion forces are present in all atoms and molecules.

C)Dipole-dipole forces increase with increasing molecular size.

D)Bonding forces are much stronger than intermolecular forces.

E)Hydrogen bonding is the reason for the abnormally high boiling point of water.

63. Which choice correctly lists the intermolecular forces present in CH3NH2?

A)London forces only

B)dipole-dipole forces only

C)London forces, dipole-dipole forces, and hydrogen bonding

D)dipole-dipole forces and hydrogen bonding

E)hydrogen bonding only

64. Which choice correctly lists the intermolecular forces present in CH4?

A)London forces only

B)London forces and dipole-dipole forces

C)London forces, dipole-dipole forces, and hydrogen bonding

D)dipole-dipole forces and hydrogen bonding

E)London forces and hydrogen bonding

65. Which choice correctly lists the intermolecular forces present in CH3Br?

A)London forces only

B)London forces and dipole-dipole forces

C)London forces, dipole-dipole forces, and hydrogen bonding

D)dipole-dipole forces and hydrogen bonding

E)London forces and hydrogen bonding

66. Arrange the following substances in order of increasing boiling point: CH3OH, CH4, CH3CH2OH, HOCH2CH2OH

A)CH3OH < CH4 < CH3CH2OH < HOCH2CH2OH B)CH4 < CH3OH < CH3CH2OH < HOCH2CH2OH C)CH4 < CH3OH < HOCH2CH2OH < CH3CH2OH D)CH3OH < CH4 < HOCH2CH2OH < CH3CH2OH E)HOCH2CH2OH < CH3CH2OH < CH3OH < CH4 67. Arrange the following substances in order of increasing boiling point: N2, H2, NH3, PH3 A)H2 < N2 < PH3 < NH3D)N2 < PH3 < NH3 < H2 B)N2 < H2 < PH3 < NH3E)NH3 < PH3 < N2 < H2 C)H2 < N2 < NH3 < PH3 68. Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first. A)H2O, H2SD)NH3, PH3 B)CH3CH2OH, CH3OHE)Br2, Cl2 C)CH3COCH3, CH3CH2CH2OH 69. Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first. A)H2O, HClD)AsH3, PH3 B)CH3OH, CH4E)Cl2, Br2 C)CH3CH2CH2OH, CH3COCH3 70. Which of the following statements regarding the liquid state is incorrect? A)Liquids are about 1000 times denser than gases. B)Liquids are normally about 90-95% as dense as their corresponding solid. C)The viscosity of a liquid is a measure of its resistance to flow. D)Molecules with high intermolecular forces will have high surface tension. E)Surface tension increases as temperature increases.