AnswersEA Academy Online Learning and Digital Citizenship Elective SpringUnit Test

Unit Test — Cumulative exam Answers

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61
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A grade point average indicates a student’s performance in

A
a single course.
B
after-school courses.
C
required courses.
D
all courses.
62
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Which condition must be met in order for an equation to be balanced?

A
The elements in the reactants are the same as the elements in the products.
B
There are fewer elements in the reactants than there are in the products.
C
The number of atoms in the reactants is greater than the number of atoms in the products.
D
The number of atoms in the reactants equals the number of atoms in the products.
63

What are public goods and services?

A
goods and services provided for US military personnel
B
goods and services that help facilitate voting on election days
C
goods and services for all citizens provided by governments
D
goods and services supplied to government officials
64

Wanda and Marita are drinking bottles of water. Each girl sounds a different musical note by blowing across the top of her bottle.What is a good hypothesis that could lead to new experimentation?

A
It is more fun to play musical notes with carbonated water than with normal spring water.
B
If the lid on a bottle is tightly closed, then blowing across the top of the bottle will not make a musical note.
C
Blowing across the top of a bottle can make a musical note.
D
If there is less water in the bottle, then the note played is lower because there is more air to move around.
65

Which balances the equation Mg + O2 → MgO?

A
Mg + 2O2 → 4MgO
B
2Mg + 2O2 → 2MgO
C
2Mg + O2 → 2MgO
D
2Mg + 2O2 → 4MgO
66

What does a grand jury decide?

A
whether a person is guilty of a crime
B
whether a trial should take place
C
whether a person should be imprisoned
D
whether police should receive a warrant
67

Which type of reaction is Mg + S → MgS?

p
polymerization
s
synthesis
r
replacement
d
decomposition
68

Which is a correct statement about common types of test questions?

A
There is little difference in how these types of questions should be approached.
B
Most can be approached by determining relationships between sets of ideas.
C
Most can be approached by determining whether an idea or fact is accurate.
D
Each type of question should be approached with a specific strategy.
69

The image shows a performance graph.

Question illustration
A
A small amount of anxiety is not enough to help students perform better on a test.
B
The higher a student’s anxiety, the greater the probability of a good test score.
C
A small amount of anxiety can help students perform better on tests.
D
The higher a student’s anxiety, the lower the likelihood of overcoming it.
70

Which clue can be used to identify a chemical reaction as a decomposition reaction?

A
The reaction involves oxygen.
B
The reaction involves ions.
C
The reaction has a single reactant.
D
The reaction has a single product.
71

Read this social media post.

Question illustration
A
The post is not relevant because too few people like it.
B
The post is relevant because it has been shared 75 times.
C
The post is not relevant because it uses facts that are out of context.
D
The post is relevant because the mayor has shown she does not like parks.
Option D
72

Which statement best describes the difference between endothermic and exothermic reactions?

A
They are opposites because endothermic reactions require energy and exothermic reactions release energy.
B
They are opposites because endothermic reactions release energy and exothermic reactions require energy.
C
They the same because they are both ways of forming precipitates.
D
They the same because they are both ways of forming gasses.
73

When sitting down to take a test, which is the best first step?

A
review the answers
B
proofread your work
C
preview the test
D
check your grammar
74

The equation below shows lithium reacting with nitrogen to produce lithium nitride.6Li + N2 2Li3NIf 12 mol of lithium were reacted with excess nitrogen gas, how many moles of lithium nitride would be produced?

Question illustration
A
4.0 mol
B
6.0 mol
C
12 mol
D
36 mol
75

The Virginia Plan created a central government with

A
one branch and a bicameral legislature.
B
one branch and a unicameral legislature.
C
three branches and a bicameral legislature.
D
three branches and a unicameral legislature.
76

When balanced, which equation would have the coefficient 3 in front of any of the reactants?

A
Zn + HCl ZnCl2 + H2
Option A
B
H2SO4 + B(OH)3 B2(SO4)3 + H2O
Option B
C
Fe + AgNO3 Fe(NO3)2 + Ag
Option C
D
C2H4O2 + O2 CO2 +H2O
Option D
77

At the start of the school year, Brianna’s history teacher announces that students’ final grades will be weighted based on how they do in three categories: exams (60 percent), final presentation (30 percent), and class participation (10 percent).

A
spending more time studying for exams than creating the final presentation
B
splitting her time evenly between studying for exams and creating the final presentation
C
concentrating on creating the final presentation and speaking up in class
D
working hard at participating in class and studying for exams
78

What materials should Roberto take with him to his test in order to feel less stressed? Check all that apply.pens and pencilsa tablet and/or calculatorhis previous tests with low scoreshis noteshis to-do list

A
pens and pencils
B
a tablet and/or calculator
C
his previous tests with low scores
D
his notes
E
his to-do list
79

Harvey mixes two liquids. Which observation of the new mixture most likely indicates a precipitate is forming?

A
a cloudy appearance
B
a bubble formation
C
a change in color
D
a change in odor
80

Read the scenario. Martin has autism. His parents feel that the school district is not providing a learning plan that takes into account his specific needs.

A
Title IX
B
Civil Rights Act of 1964
C
Americans with Disabilities Act
D
Individuals with Disabilities Education Act

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