Premium Essay

Ib Chem Topic 2

In: Social Issues

Submitted By ohigs
Words 3053
Pages 13
IB Chemistry – SL
Topic 2 Questions
1. Consider the composition of the species W, X, Y and Z below. Which species is an anion?
Species|Number of protons|Number of neutrons|Number of electrons|
W|9|10|10|
X|11|12|11|
Y|12|12|12|
Z|13|14|10|
A. W
B. X
C. Y
D. Z
(Total 1 mark)
2. Energy levels for an electron in a hydrogen atom are
A. evenly spaced.
B. farther apart near the nucleus.
C. closer together near the nucleus.
D. arranged randomly.
(Total 1 mark)
3. Which is related to the number of electrons in the outer main energy level of the elements from the alkali metals to the halogens?
I. Group number
II. Period number
A. I only
B. II only
C. Both I and II
D. Neither I nor II
(Total 1 mark)

4. How do bond length and bond strength change as the number of bonds between two atoms increases?
|Bond length|Bond strength|
A.|Increases|increases|
B.|Increases|decreases|
C.|Decreases|increases|
D.|Decreases|decreases|
(Total 1 mark)
5. Which of the following is true for CO2?
|CO bond|CO2 molecule|
A.|Polar|non-polar|
B.|non-polar|polar|
C.|Polar|polar|
D.|non-polar|non-polar|
(Total 1 mark)
6. The molar masses of C2H6, CH3OH and CH3F are very similar. How do their boiling points compare?
A. C2H6 < CH3OH < CH3F
B. CH3F < CH3OH < C2H6
C. CH3OH < CH3F < C2H6
D. C2H6 < CH3F < CH3OH
(Total 1 mark)
7. What is the correct number of each particle in a fluoride ion, 19F–?
|protons|neutrons|electrons|
A.|9|10|8|
B.|9|10|9|
C.|9|10|10|
D.|9|19|10|
(Total 1 mark)
8. Which statement is correct for the emission spectrum of the hydrogen atom?
A. The lines converge at lower energies.
B. The lines are produced when electrons move from lower to higher energy levels.
C. The lines in the visible region involve electron transitions into the energy level closest to the nucleus. D. The line corresponding to the greatest emission of…...

Similar Documents

Premium Essay

Topics 1 and 2

...Brad McPherson / Article Summaries Topics 1&2 / Strategy and Marketing Strategies for Learning from Failure – Amy C. Edmondson – Strategy Failure is being looked at the wrong way (Edmondson, 2011). Failure can be an important learning tool for organizations around the globe. If analyzed correctly and quickly, but also implemented effectively, failure can transform negative situations into positive growth. Failure is generally discouraged and instinctively passed onto someone else if possible; this is called the Blame Game (Edmondson, 2011). The Blame Game (discovered at childhood) discourages people from taking the blame for a mistake or failure. It leads to unsolved problems and lessons unlearned. Leaders must combat the Blame Game with the construction of a learning culture. A learning culture “makes people feel both comfortable with and responsible for surfacing and learning from failures” (Edmondson, 2011). To build an effective learning culture a leader must strongly encourage a realization of what happened or caused the problem-not who did it (Edmondson, 2011). A learning culture deals with failure in three ways: detecting, analyzing, and experimentation (Edmondson, 2011). Detecting failure is important because the longer it remains unsurfaced the worse the damages will be. It’s also crucial to effective analyze failure. Companies shy away from this because it makes everyone uncomfortable and harms self-esteem (Edmondson, 2011). Analyzing failure obtains......

Words: 598 - Pages: 3

Free Essay

Chem 2

...for the largest Christian church in Egypt and the Middle East. The foundational roots of the Church are based in Egypt, but are now worldwide. The church was established by Saint Mark, an apostle and evangelist, in the middle of the 1st century. Coptic Orthodox Christianity started in Egypt but has become worldwide and has become a common faith around the world. Egypt is identified in the Bible as the place of refuge that the Holy Family sought in its flight from Judea: "When he [Joseph] arose, he took the young Child and His mother by night and departed for Egypt, and was there until the death of Herod the Great, that it might be fulfilled which was spoken by the Lord through the prophet, saying, Out of Egypt I called My Son" (Matthew 2:12–23). The word Copt is derived from the Greek word Aigyptos, which was, in turn, derived from "Hikaptah", one of the names for Memphis, the first capital of Ancient Egypt. The modern use of the term "Coptic" describes Egyptian Christians, as well as the last stage of the ancient Egyptian language script. The word ‘orthodox’ literally means ‘straight opinion.' The Coptic church is based on the teachings of Saint Mark , he brought Christianity into Egypt during the roman era when Nero was emperor. Christianity spread throughout Egypt within a half century of Saint Marks arrival in Alexandria. According to the tradition when Saint Mark arrived on his missionary journey to Egypt he found that the Coptic religion was a god centered......

Words: 2301 - Pages: 10

Premium Essay

Re: Topic 2: Discussion Question 2

...toxins contaminants in the environment. References  Green L. National policy on the promotion of health. Int J Health Educ 1979;22:161-168. Journal of School Health July 2013, vol. 83, No.7 pg 500-513, 2013 American School Health Association. (ASHA) Retrieved from: Grand Canyon University (2013) Journal Physical Activity Promotion In Health Care Settings: the “Exercise I Medicine” Global Health Initiative Perspective Retrieved from: Schweizerische Zeitschrift fur Sportmedizin und Sporttraumatologie 62(2), 42-45, 2014 Retrieved Grand Canyon University (2014) World Health Organization. Ottawa charter for health promotion. 1986; Retrieved from http://www.who.int/hpr/NPH/docs/ottawa_charter_hp.pdf. Accessed July 28, 2011....

Words: 992 - Pages: 4

Free Essay

Ib Chapter 2

...Chapter 2 1. Political Economy: The political, economic and legal system of a country 2. Political system: he system of government in a nation 3. Political systems can be assessed according to two dimensions. The first is the degree to which they emphasize collectivism as opposed to individualism. The second is the degree to which they are democratic or totalitarian. (collectivismtotalitarian; individualismdemocratic) 4. Collectivism: Collectivism refers to a political system that stresses the primacy of collective goals over individual goals. (socialism, communism, social democracy) 1. Socialist: Someone who believes in public ownership of the means of production for the common good of society. 2. Communist: The communists believed that socialism could be achieved only through violent revolution and totalitarian dictatorship. (eg: china, cuba, north korea) 3. Social democrats: committed themselves to achieving socialism by democratic means, turning their backs on violent revolution and dictatorship. 5. Individualism: individualism refers to a philosophy that an individual should have freedom in his or her economic and political pursuits.(freedom of expressions, economic self-interest) 6. Democracy vs Totalitarianism (communist, theocratic, tribal, right-wing) 1. Democracy: Political system in which government is by the people, exercised either directly or through elected representatives. 2. Totalitarianism: Form of government in which one......

Words: 644 - Pages: 3

Free Essay

Ib History Paper 1&2 Essays

...and social structure of German authoritarian origins Germany had always favored nationalism, militarism, and anti-Semitism; all emotions in the German people that went back to Germany’s roots and history. Before the Third Reich and the Weimar Republic, Germany lived a prosperous period known as the Second Reich, during which they became a great empire due to the authoritarian traditions and the military success. This is a view extremely supported by the “structuralists”, who believe that Nazism and Hitler were simply products of German history and that they were forces that still dominated during Weimar Germany, thus making it hard for Germany to develop stable and real democratic institutions. Body Paragraph 2 – Poor commitment to Weimar Republic The Weimar Republic 1919 was established in a period of chaos, after the monarchy abdicated, with Friedrich Ebert as the first president. This republic even had a very liberal and democratic Constitution; however, it counted with two problematic problems: proportional representation, which made it difficult for any party to rule with majority, and Article 48, which gave the president the power to rule by decrees. In addition, due to the origins of Germany, there was barely any commitment to the democracy, especially from the Elites who disliked the democracy and wanted to return to an authoritarian system. Weimar also experienced several crisis, which eventually leaded to......

Words: 3288 - Pages: 14

Free Essay

Chem 208 - Module 2 Notes

...Module 2: Keywords Law of conservation of mass: A law which states that "mass is neither created nor destroyed in chemical reactions". This essentially means that the same number of atoms of each type occurring on the reactant side must also appear on the product side. Integer: A whole number (i.e., a number that contains no decimal or fractions). Uncertainty: A characteristic of every measurement, indicating the error in a reported value. This is generally specified using significant figures. Significant figures: A method for reporting the results of a measurement that includes all known or certain digits and a final digit that is considered uncertain. SI Units: The International System of units that is based on the metric system and uses SI derived units for length, mass, time, etc. and prefixes to indicate magnitude (i.e., powers of 10). Density: The physical property of a substance that corresponds to the ratio of its mass to volume. This property does not depend on the amount of substance. Dimensional Analysis: A method for solving numerical problems that uses 'conversion factors' to cancel out unwanted units and results in an answer with the desired units (i.e., dimensions). 5. If the density of a substance is 4.14 g/cm3, what is the mass in milligrams of a piece of this substance with a volume of 15.46 mL? 6.40 x 104 mg Object A covered a certain distance in 1.8 x 10-9 s whereas to cover the same distance, object B took 3.6 ns. Which of the...

Words: 273 - Pages: 2

Premium Essay

Topic 2 Discussion Question #1

...Topic 2 Discussion question #1 How does knowledge of the foundations and history of nursing provide a context in which to understand current practice? By having the knowledge of the foundations and history of nursing provides even the third generation nurse such as myself to understand the growth and ability to grow in the field. One must be able to identify the unsurmountable challenges faced by Florence Nightingale can empower the registered nurse throughout their career. By taking the time to study our history, each registered nurse can more effectively support the standard of evidence based practice. I was raised in a family where my grandmother, mother, aunts and cousins were all nurses. Each one in her own specialty. In my late teens, my mother went into education and taught in a school of nursing, climbing the leadership ladder to at the time of retirement she held the role as an assistant director. This being said, I always felt that I had a good exposure to the history of the profession. I was amazed as I observed the power point on areas I had no previous knowledge about and the extent of the changes we in the profession had accomplished. Identify at least three trends in nursing practice from the "Nursing Timeline of Historical Events" media piece. Nursing Uniform Transition from the Florence Nightingale area to when our grandmothers and mothers were in nursing that encompassed the hat, white stockings and white dress with pockets. To the......

Words: 585 - Pages: 3

Premium Essay

Topic 2 Basic Molecule

...CENTRE FOR FOUNDATION STUDIES FOUNDATION IN SCIENCE FHSB 1214 BIOLOGY I TUTORIAL 2 BASIC MOLECULES OF CELLS II Student’s Guide: At university level, the tutor facilitates student learning without spoon-feeding. Therefore, you are expected to: • Read your textbook, attempt the questions before the tutorial • You may enter the class and sign your attendance after showing your tutor that all tutorial questions have been completed; even if you don’t know how to do, write something - you’re not advised to leave answers blank in the finals. • Write answers on board if you wish to receive tutor feedback (no answer, no feedback) • Be independent: consult textbooks or dictionaries on your own first before asking the tutor • All questions are compulsory. 1 mark may reflect 1 answer point. (Source : Final Examination, April 2015) Q1. (a) Figure 1.1 shows the structure of a triglyceride. [pic] Figure 1.1 Based on Figure 1.1, answer the following questions. i) During the digestion of this biological molecules, the bond labeled X is broken down. State the type of reaction involved here. (1 mark) ii) In your answer booklet, draw the products of the molecule breakdown of the triglyceride (4 marks) (Source: Final examination, Sept 2012) Q2. (a) Lipid A showed in Figure 2.1 and a haemoglobin molecule showed in Figure 2.2 are found in mammal cells. Both molecules are...

Words: 653 - Pages: 3

Premium Essay

Psyc 101 Topic #2

...Elmer Velasquez Topic #2 PSYC 101 September 7, 2015 Samuel Moulton and Stephen Kosslyn used brain scanning to test whether individuals have knowledge that cannot be explained through normal perceptual processing. They claim that if any ESP process exists, the participants’ brains should respond differently to ESP and non-ESP stimuli. Instead, the results showed that participants’ brains responded identically to ESP and non-ESP stimuli, despite reacting strongly in how emotions the stimuli were. To manage a better test of ESP, the authors decided to develop a new method, which directly addressed the presumed source of ESP: namely, the brain. They argue that because the brain enables perception and stores information, even events people don’t consciously perceive or information they can’t consciously remember, it can offer a much more comprehensive test for ESP than self-report or behavior. To study whether or not ESP exists, Moulton and Kosslyn presented participants with two types of visual stimuli: ESP stimuli and non-ESP stimuli. These two types of stimuli were identical with one exception: ESP stimuli were not only presented visually, but also were presented telepathically, clairvoyantly, and precognitively to participants. Supporting ESP can be hard. Nearly half of the adults in the USA believe in the existence of ESP. I do not. Just as Moulton says, “one cannot affirm the null hypothesis.” Although at the same time some null results are stronger than......

Words: 252 - Pages: 2

Premium Essay

Re: Re: Topic 2 Dq 2

...A Healing Hospital™ (a designation awarded by the Baptist Healing Trust, Nashville, Tenn.) goes beyond the glass, bricks and mortar. The Mercy Gilbert Medical Center Healing Hospital™ culture is what sets it apart. The Healing Hospital™ concept includes three key components: 1. A healing physical environment 2. The integration of work design and technology 3. A culture of Radical Loving Care 2. I wanted Mercy Gilbert to be free from overhead paging, in-room intercoms, loud machines rolling down hard, long hallways or voices calling to each other at the nurse’s station. 3. For a hospital to promote healing, it needs to provide a quiet environment that allows patients to sleep. Patients’ bodies perform the most repair during sleep. Cells regenerate faster during sleep. So why, in the very setting where healing is most needed, do hospitals allow for high levels of noise and sleep deprivation? 4. A good healing hospital offers highly technical advancements, but is able to integrate the technology into a caring environment delivered by a compassionate staff. 5. A second key component of a Healing Hospital™ is the integration of work design and technology. Working with our designers, we found ways to enable staff to work more efficiently, to provide additional privacy and security for patients and to use technology to promote the healing environment. 6. The third and most critical component of a Healing Hospital™ is embracing a culture of Radical...

Words: 334 - Pages: 2

Free Essay

Bio Chem Task 2

...Smith 1                          Heather Smith  477126  Biochemistry  WGU  August 24, 2015                                      Smith 2    Model of Essential Amino Acid    Essential amino acids are those amino acids in which the body can not make on its own,  instead they must be procured through the foods that we eat (Helmenstein).  Lysine is one of the  essential amino acids. Two of the​  ​ chemical properties of lysine are that it is positively charged  and it is hydrophilic, which means water loving so it easily dissolves in water (National Center  for Biotechnology Information).            Smith 3  Each NH2 contains one nitrogen atom and two hydrogen atoms­ represented on the diagram as  intertwining pipe cleaners color coded to there respective elements (ie NH2 has blue and neon)    Each CH2 contains one carbon atom and two hydrogen atoms (pink and neon)    OH contains one oxygen atom and one hydrogen atom (orange and neon)        Diagram of Protein Structure              Smith 4                        Dehydration : Creating a Peptide Bond                Smith 5                        Diagram: Peptide Bond Broken by Hydrolysis                Smith 6        The Four Forces that Stabilize Proteins at Tertiary Level      The tertiary structure of proteins are dictated by several factors. Non polar molecules are  also hydroph...

Words: 861 - Pages: 4

Premium Essay

Topic 2 Study Guide

...Topic 2 Study Guide This study guide is a tool designed to prepare students for the Topic 2 Quiz. Instructors will grade the study guide for completion, not for accuracy. Download the study guide and type in your answers below the questions. Save the study guide to your computer and submit when complete. There is no need to submit the study guide to Turnitin. After submitting the study guide to the instructor, save it for use when taking the Topic 2 Quiz. The quiz will be graded for accuracy, so take time to seek the correct answers for this study guide before you attempt the quiz. Once you start the quiz, do not exit the quiz until the entire quiz is completed. Exiting out of the quiz before it is complete may result in a zero grade. Please type your answers below each question. 1. List the three Christian views of creation as given in the lecture, and a brief description of each. The father the son and the holy spirit 2. The concept that humanity is created in the image of God may refer to a number of things. List four: two covered in the textbook and two covered in the lecture. body, spirit, wisdom, and dominion. 3. What are the similarities between the scenes in Revelation 21:1-4 and the Garden of Eden in Genesis 2? God made Adam the head of his garden. 4. According to the lecture, what is meant when we say God is sovereign? Sovereign means that he has power over all and he is the head. 5. List at least five characteristics of God emphasized in Psalm......

Words: 357 - Pages: 2

Free Essay

Topic 1: Discussion Question 2

...Topic 1: Discussion Question 2 I reminisce to the excitement of the first day of school as I begin the next chapter of my educational journey. The sweet feeling of unknown, the butterflies in the stomach bring about childhood memories. I am looking forward to expanding my knowledge, the joy of overcoming the challenges and most importantly, earning my BSN. I have my goals set clearly before me and my motivation is strong. I know I can overcome my fear of failure as I have done in the past. My fears almost caused me to give up during my LPN to RN bridge program. I felt overwhelmed and lost confidence in myself. Thankfully I had a strong support system. I was able to refocus on my goals, prioritize and utilize my resources to overcome my fears of failure and succeed. With hard work and determination I regained my confidence and drive to become a professional and a scholar. From that point there was no turning back. I have too much at stake to allow self-doubt to interfere with my goals. Although I encountered a setback during my bridge program I was able to complete it and earn my associate degree. I am glad I had that experience. It made me more confident in myself and more aware of my strengths and weaknesses as a student. I think it is naïve for a person to believe they will never fail. That mid set handicaps a student’s mind. I feel that knowing and accepting one’s fears is the best way to not fall into their depths. References: Lake, A., & von Baeyer, C.......

Words: 313 - Pages: 2

Free Essay

Ip 2 Topics in Cultural Study

...AIU Online September 19, 2012 Unit 2 Individual Project Latin was a large impact on the medieval ways. For very many years it was dominating the western world. The Latin language spread wherever the Roman Empire ruled. Around 1200 A.D. the empire began to fall and the Latin language began to fade. The people farthest away began to undergo the changes first and the ethical renewal began. Many individuals choose to use their vernacular language rather than Latin. In England they returned to old English with great influence from Alfred the Great. While in power he had written many books in old English; including many religious pieces. Beowulf and the Anglo Saxton Chronicles are also examples of literature written in old English. These pieces incorporated Latin characters. The English had many vernaculars during this time period. Your vernacular language depended on you social class. Lower classes tended to speak English. Traveling entertainers and many judicial situations utilized the vernacular in spoken form in France. A large percentage of the vernacular in France was romance; which stemmed from individuals jotting down stories as they were told by musicians that were passing through. Some of the oldest pieces date back to Charlemagne during the twelfth century. Germany used vernacular as early as the eighth century. Many attempts made to convert failed and was not accepted. During the 12th century many of......

Words: 646 - Pages: 3

Premium Essay

Ib Bio Topic 6

...IB Biology Topic 6 Human Health and Physiology Introduction – The human body is composed of cells organize into tissues, tissues organized into organs and organs organized into an organ system. This chapter will cover some of the major organ systems of the boy and how those organ systems interact with each other = physiology. 6.1 Digestion Why do we digest food? – Here is the series of the events in order: ~Ingestion: You eat the food. ~Digestion: A series of chemical reactions, whereby you convert the ingested foot to smaller and smaller molecular forms. ~Absorption: Small molecular forms are absorbed through cells of your digestive system and pass into nearby blood or lymphatic vessels ~Transport: Your circulatory system delivers the small molecular nutrients to your body cells. Digestion solves a problem of molecular size. – Many of the foods we ingest have very large molecules –to large to pass across any cell membrane. – In order to get into our bloodstream, molecules must pass through the cell membranes of our intestines and then through the cell membrane of the capillary. Therefore any food we eat must be chemically digested to a suitable size. (Page 165) Digestion allows you to turn molecules into ‘your own’ – Plant cells characteristically store excess carbohydrates in the form of starch whereas animals store excess carbohydrates as glycogen. – Each type of living organism has its...

Words: 2355 - Pages: 10