Expert1
Welcome to Expert1 – Your Trusted Study Partner!
Struggling to prepare for exams or ace your coursework? At Expert1, I provide top-tier, exam-ready study materials designed to help you succeed with confidence. All notes are created with clarity, precision, and a deep understanding of the curriculum to ensure you save time and score high.
What You’ll Find Here:
High-quality summaries and exam packs
Past paper solutions with detailed explanations
Notes aligned with your syllabus (A-levels, university, etc.)
Resources from top-performing students
Trusted by hundreds of students to boost their grades!
- 7445
- 0
- 676
Community
- Followers
- Following
6 Reviews received
8121 items
CMN 548 Final Exam Study Guide Overview Questions and Correct Answers/ Latest Update / Already Graded
Primary prevention 
 Ans: Aimed at decreasing the incidence (number of new cases) 
of mental disorders. Example: Stress management classes for 
graduate students, smoking prevention classes, Drug Abuse 
Resistance Education (DARE) 
 
Secondary prevention 
 Ans: Aimed at decreasing the prevalence (number of existing 
cases) of mental disorders. Example: Telephone hotlines, crisis 
intervention, disaster responses 
 
Tertiary prevention 
 Ans: Aimed at decreasing the disability and sev...
- Exam (elaborations)
- • 35 pages •
Primary prevention 
 Ans: Aimed at decreasing the incidence (number of new cases) 
of mental disorders. Example: Stress management classes for 
graduate students, smoking prevention classes, Drug Abuse 
Resistance Education (DARE) 
 
Secondary prevention 
 Ans: Aimed at decreasing the prevalence (number of existing 
cases) of mental disorders. Example: Telephone hotlines, crisis 
intervention, disaster responses 
 
Tertiary prevention 
 Ans: Aimed at decreasing the disability and sev...
CHM 142 Exam 2 Questions and Correct Answers/ Latest Update / Already Graded
Compounds that contain electron-rich ___ are weak bases 
Ans: N 
True or false: Amines such as CH3CH2NH2 are weak bases 
Ans: True 
Soluble hydroxides are _______ bases 
Ans: strong 
Which of the following is NOT a conjugate acid-base pair? 
H2S/HS- 
NH3/NH2- 
H3PO4/H2PO4- 
H2PO4-/PO4^3- 
HCO3-/CO3^2- 
Ans: H2PO4-/PO4^3- 
All rights reserved © 2025/ 2026 | 
Page | 2 
Which is a stronger acid? HF or HBr 
Ans: HBr 
Strong acids dissociate _________ into ions in water. 
Ans: Comp...
- Exam (elaborations)
- • 10 pages •
Compounds that contain electron-rich ___ are weak bases 
Ans: N 
True or false: Amines such as CH3CH2NH2 are weak bases 
Ans: True 
Soluble hydroxides are _______ bases 
Ans: strong 
Which of the following is NOT a conjugate acid-base pair? 
H2S/HS- 
NH3/NH2- 
H3PO4/H2PO4- 
H2PO4-/PO4^3- 
HCO3-/CO3^2- 
Ans: H2PO4-/PO4^3- 
All rights reserved © 2025/ 2026 | 
Page | 2 
Which is a stronger acid? HF or HBr 
Ans: HBr 
Strong acids dissociate _________ into ions in water. 
Ans: Comp...
Chemistry Final ACS Exam Questions and Correct Answers/ Latest Update / Already Graded
Accuracy? 
 Ans: Closeness of measurements to the TRUE VALUE of what is 
being measured 
 
Precision? 
 Ans: Closeness of a SET of measurements 
 
How do you calculate Percent Error? 
 Ans: I experimental-accepted I 
____________________ x 100 
 accepted value 
 
Are zeros infront of non-zero digis significant? 
 Ans: Nope! 
ex: 0.0071 is only 2 sig figs 
 
Page | 2 
Are zeros at the end of a number and to the right of the decimal 
significant? 
Ans: Yep! 
ex: 9.100 is 4 s...
- Exam (elaborations)
- • 15 pages •
Accuracy? 
 Ans: Closeness of measurements to the TRUE VALUE of what is 
being measured 
 
Precision? 
 Ans: Closeness of a SET of measurements 
 
How do you calculate Percent Error? 
 Ans: I experimental-accepted I 
____________________ x 100 
 accepted value 
 
Are zeros infront of non-zero digis significant? 
 Ans: Nope! 
ex: 0.0071 is only 2 sig figs 
 
Page | 2 
Are zeros at the end of a number and to the right of the decimal 
significant? 
Ans: Yep! 
ex: 9.100 is 4 s...
Chemistry 1151 ACS Exam Questions and Correct Answers/ Latest Update / Already Graded
solids 
atomic/molecular motion? 
atomic/molecular spacing? 
shape? 
volume? 
compressibility? 
Ans: oscillation/vibration about a fixed point 
close together 
definite 
definite 
incompressible 
liquids 
atomic/molecular motion? 
atomic/molecular spacing? 
shape? 
volume? 
All rights reserved © 2025/ 2026 | 
 Page | 2 
 
All rights reserved © 2025/ 2026 | 
compressibility? 
 Ans: free to move relative to one another 
close together 
indefinite 
definite 
incompressib...
- Exam (elaborations)
- • 16 pages •
solids 
atomic/molecular motion? 
atomic/molecular spacing? 
shape? 
volume? 
compressibility? 
Ans: oscillation/vibration about a fixed point 
close together 
definite 
definite 
incompressible 
liquids 
atomic/molecular motion? 
atomic/molecular spacing? 
shape? 
volume? 
All rights reserved © 2025/ 2026 | 
 Page | 2 
 
All rights reserved © 2025/ 2026 | 
compressibility? 
 Ans: free to move relative to one another 
close together 
indefinite 
definite 
incompressib...
Chemistry 132 ACS exam study notes Questions and Correct Answers/ Latest Update / Already Graded
Where is the mass number located on an element symbol? 
Ans: the superscript 
Mass number 
Ans: protons + neutrons 
Where is the atomic number located on an element symbol? 
Ans: the subscript 
Atomic number 
Ans: number of protons 
Isotopes 
Ans: elements with different numbers of neutrons 
How to solve for an empirical formula 
All rights reserved © 2025/ 2026 | 
Page | 2 
Ans: Assume percentages are grams, convert to moles, divide 
each number by the smallest number of moles to...
- Exam (elaborations)
- • 16 pages •
Where is the mass number located on an element symbol? 
Ans: the superscript 
Mass number 
Ans: protons + neutrons 
Where is the atomic number located on an element symbol? 
Ans: the subscript 
Atomic number 
Ans: number of protons 
Isotopes 
Ans: elements with different numbers of neutrons 
How to solve for an empirical formula 
All rights reserved © 2025/ 2026 | 
Page | 2 
Ans: Assume percentages are grams, convert to moles, divide 
each number by the smallest number of moles to...
Chemistry 112 ACS Flashcards Questions and Correct Answers/ Latest Update / Already Graded
Energy (decreases/increases) with increasing wavelength? 
Ans: decreases 
Energy (decreases/increases) with increasing frequency? 
Ans: increases 
The energy gaps between levels (decrease/increase) as the energy 
levels increase (n=1 to n=2 to n=3, etc.) 
Ans: decreases 
The O-Si-O bond angles in SiO₂ (quartz) are closest to... 
Ans: 110° 
A molecule with 0 lone pairs and 2 bonding electron pairs would be? 
Ans: linear 
A molecule with 1 lone pair and 2 bonding electron pairs would...
- Exam (elaborations)
- • 12 pages •
Energy (decreases/increases) with increasing wavelength? 
Ans: decreases 
Energy (decreases/increases) with increasing frequency? 
Ans: increases 
The energy gaps between levels (decrease/increase) as the energy 
levels increase (n=1 to n=2 to n=3, etc.) 
Ans: decreases 
The O-Si-O bond angles in SiO₂ (quartz) are closest to... 
Ans: 110° 
A molecule with 0 lone pairs and 2 bonding electron pairs would be? 
Ans: linear 
A molecule with 1 lone pair and 2 bonding electron pairs would...
Chem 1212 ACS Final practice questions Questions and Correct Answers/ Latest Update / Already Graded
Which of the following is an example of a Brønsted-Lowry base in 
water? 
A) H3O+ 
B) CO2 
C) NH3 
D) HCl 
Ans: NH3 
What is the temperature in Fahrenheit when it is 35*C outside? 
A) 67 
B) 95 
C) 63 
D) 75 
Ans: 95 
In a chemical equation, the reactants are on which side of the arrow? 
A) right 
All rights reserved © 2025/ 2026 | 
Page | 2 
B) left 
C) neither right nor left 
D) both right and left 
Ans: Left 
What does the law of conservation of mass state? 
A) all mat...
- Exam (elaborations)
- • 16 pages •
Which of the following is an example of a Brønsted-Lowry base in 
water? 
A) H3O+ 
B) CO2 
C) NH3 
D) HCl 
Ans: NH3 
What is the temperature in Fahrenheit when it is 35*C outside? 
A) 67 
B) 95 
C) 63 
D) 75 
Ans: 95 
In a chemical equation, the reactants are on which side of the arrow? 
A) right 
All rights reserved © 2025/ 2026 | 
Page | 2 
B) left 
C) neither right nor left 
D) both right and left 
Ans: Left 
What does the law of conservation of mass state? 
A) all mat...
CHEM 1030 ACS Final Exam Study Guide Questions and Correct Answers/ Latest Update / Already Graded
T or F? Non-zero numbers ARE significant 
Ans: True 
T or F? Leading zeros ARE significant. 
Ans: False. Leading zeros are NOT significant 
T or F? Zeros between non-zero numbers ARE significant 
Ans: True 
T or F? Trailing zeros are NOT significant. 
Ans: False. Trailing zeros ARE significant 
How many significant figures are in 0.050? 
Ans: 2 
How many significant figures are in 1.0056 
All rights reserved © 2025/ 2026 | 
Page | 2 
Ans: 5 
How many significant figures are in 0.0...
- Exam (elaborations)
- • 12 pages •
T or F? Non-zero numbers ARE significant 
Ans: True 
T or F? Leading zeros ARE significant. 
Ans: False. Leading zeros are NOT significant 
T or F? Zeros between non-zero numbers ARE significant 
Ans: True 
T or F? Trailing zeros are NOT significant. 
Ans: False. Trailing zeros ARE significant 
How many significant figures are in 0.050? 
Ans: 2 
How many significant figures are in 1.0056 
All rights reserved © 2025/ 2026 | 
Page | 2 
Ans: 5 
How many significant figures are in 0.0...
CHEM 211 ACS Exam Final Questions and Correct Answers/ Latest Update / Already Graded
physical properties 
 Ans: the characteristics of a substance that can be observed or 
measured without changing the substance - color - melting point -electrical conducivity - density 
 
physical change 
 Ans: A change in a substance that does not involve a change in 
the identity or composition of the substance 
 
Chemical properties 
 Ans: A characteristic of a substance that appears as it interacts 
with, or transforms into, other substances. - flammability - corrisiveness - react...
- Exam (elaborations)
- • 14 pages •
physical properties 
 Ans: the characteristics of a substance that can be observed or 
measured without changing the substance - color - melting point -electrical conducivity - density 
 
physical change 
 Ans: A change in a substance that does not involve a change in 
the identity or composition of the substance 
 
Chemical properties 
 Ans: A characteristic of a substance that appears as it interacts 
with, or transforms into, other substances. - flammability - corrisiveness - react...
CHEM 111 ACS Final Questions and Correct Answers/ Latest Update / Already Graded
chemistry 
 Ans: the study of matter and how it changes 
 
matter 
 Ans: Anything that has mass and takes up space 
 
elements 
 Ans: molecules composed of one kind of atom; cannot be 
broken into simpler units by chemical reactions. 
 
atoms 
 Ans: The basic building blocks of matter 
 
property 
 Ans: A characteristic that defines the value, appearance, 
and/or state of an object. 
 
Page | 2 
molecule 
Ans: A group of atoms bonded together 
gas 
Ans: A state of matter wit...
- Exam (elaborations)
- • 37 pages •
chemistry 
 Ans: the study of matter and how it changes 
 
matter 
 Ans: Anything that has mass and takes up space 
 
elements 
 Ans: molecules composed of one kind of atom; cannot be 
broken into simpler units by chemical reactions. 
 
atoms 
 Ans: The basic building blocks of matter 
 
property 
 Ans: A characteristic that defines the value, appearance, 
and/or state of an object. 
 
Page | 2 
molecule 
Ans: A group of atoms bonded together 
gas 
Ans: A state of matter wit...
Certified Healthcare Interpreter (CCHI) Exam – Complete Study Guide with Vocabulary, Questions & Answer Keys
Multifamily Housing Specialist Certification – Quadel, HUD Compliance Training – Complete Exam Material
FCIC/NCIC Certification Questions and Correct Answers (2025/2026) | Criminal Justice Information Systems, Officer Use, and Legal Procedures
CLEAN Certification Exam – Questions and Correct Answers (2025/2026) | Criminal Justice Network Access, NCIC Usage, and Record Management
BKAT Study Questions and Correct Answers/ Latest Update / Already Graded