AnswersEA Academy Online Learning and Digital Citizenship Elective SpringWriting an Academic Paper

Writing an Academic Paper — Unit test Answers

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1
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Write a paragraph explaining how adhesion, cohesion, and capillary action all enable water to go from the roots to the top of a tall tree.

Answer:

To transport water from the roots to the leaves of a tall tree, plants rely on the unique properties of water caused by its polar nature and hydrogen bonds. Cohesion is the attraction that makes water molecules stick to one another, creating a continuous water column. Adhesion is the attraction between water molecules and the walls of the tree's xylem vessels, which helps the water move against gravity. These two forces work together to produce capillary action, allowing water to climb upward. As water evaporates from the leaves, it pulls the entire column of water up from the roots.

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Which terms and phrases did you include in your response? Check all that apply.polar bondhydrogen bondstick or attractionagainst gravityleaves or rootsother

A
polar bond
B
hydrogen bond
C
stick or attraction
D
against gravity
E
leaves or roots
F
other
3

By which process does water vapor become a cloud?

A
evaporation
B
transpiration
C
condensation
D
precipitation
4

What causes an ionic bond to form between sodium and chlorine?

A
Sodium and chlorine atoms share electrons.
B
Sodium and chlorine atoms switch electrons.
C
Sodium atoms gain electrons.
D
Sodium atoms donate electrons.
5

What does the chemical formula C3H6O2 tell about a molecule of the compound it represents?

A
It is made up of 3 atoms of 11 different elements.
B
It is made up of 11 atoms joined in a straight line.
C
It is made up of 11 total atoms of 3 different elements.
D
It is made up of 1 atom composed of 3 different elements.
6

Sublimation is the opposite of deposition just as evaporation is the opposite of

A
fusion
B
transpiration
C
freezing
D
condensation
7

Which is the only element in group 1 on the periodic table that forms covalent bonds?

A
hydrogen
B
lithium
C
potassium
D
sodium
8

What is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?

T
The chemical formula does not show the types of elements that make up the compound.
T
The chemical formula does not show how the atoms are connected to one another.
T
The chemical formula does not show the number of atoms of each element in a molecule.
T
The chemical formula does not show the chemical symbols of the elements in the compound.
9

What would happen to life on Earth if all the liquid fresh water were used up?

A
All organisms would adapt to using salt water.
B
Organisms would carry out life functions without water.
C
Animals would be affected, but some desert plants would survive.
D
Life could no longer exist on Earth.
10

Giovanni created this chart to study for an exam.Which best describes how to correct the error in the chart?

Question illustration
A
Remove “plastics” from the uses for sodium hydroxide.
B
Swap the uses for iron oxide and calcium carbonate.
C
Change the use for calcium chloride to “used in preservatives.”
D
Add “de-ice roads” to uses for calcium carbonate.
11

Which term best describes all atoms in ionic bonds?

A
stable
B
unstable
C
positively charged
D
negatively charged
12

Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns.Which is the best explanation of her results?

A
The electric current changed some of the sample to gas even though the sample was not breaking down. Therefore, the original liquid is a compound.
B
The electric current released a gas that was odorless and colorless, like the original sample. Therefore, the original liquid is an element.
C
The sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound.
D
The sample lost some of its volume, but the gas still had the same chemical makeup as the original sample. Therefore, the original liquid is an element.
13

How many atoms of each element are in the chemical formula NH4NO3?

A
1 nitrogen, 1 hydrogen, and 3 oxygen
B
1 nitrogen, 4 hydrogen, and 3 oxygen
C
2 nitrogen, 4 hydrogen, and 3 oxygen
D
5 nitrogen, 1 hydrogen, and 1 oxygen
14

How do the nuclei of covalently bonded atoms help keep the bond together?

A
Neutral particles in the nucleus provide enough mass that the force of gravity holds the atoms together.
B
Neutral particles in the nucleus can become positive or negative in order to balance the charges.
C
Positive particles in the nucleus change into negative particles that enter electron shells.
D
Positive particles in the nucleus are attracted to shared electrons, so the atoms stay close together.
15

The element sulfur (S) is most likely to form covalent bonds with the element

A
helium (He).
B
magnesium (Mg).
C
zinc (Zn).
D
oxygen (O).
16

Formaldehyde is an organic compound. Each molecule includes two hydrogen (H) atoms, one oxygen (O) atom, and one carbon (C) atom. Below are the dot structures for each of these elements.Which diagram shows how the covalent bonds most likely form in a formaldehyde molecule?

Question illustration
A
Option
B
Option
C
Option
D
Option
17

What is the thesis statement in Amber’s introduction?

A
sentences 1 and 3
B
sentence 2
C
sentence 3
D
sentences 2 and 3
18

What would be the best sentence for Miguel to use in his conclusion?

A
Not everyone should have to take etiquette classes.
B
Etiquette classes would be nice.
C
Courtesy and consideration are skills that will benefit a person throughout life.
D
Students should also learn how to sympathize with other people.
19

Which best describes what Victoria should do to improve the organization of her paper?

A
think of a different topic
B
try to change the tone of her paper
C
clarify her topic and make it relevant to her audience
D
organize her ideas logically from least important to most important
20

Which is the best example of academic voice?

A
Cats can make a bunch of crazy sounds, but dogs can only make about ten.
B
Canada didn’t have a national flag until 1965, when the well-known maple leaf flag was adopted.
C
One well-known Internet company is famous for providing free and nutritious meals to its employees.
D
Too much noise can make you really upset and want to scream.

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