Halogen - Study guides, Revision notes & Summaries

Edexcel GCSE Group 7 - The Halogens questions and answers

Light energy that is NOT absorbed by an object can be _____. - correct answer -reflected from and/or transmitted through the object A light that is considered warm in tone is produced by lamps with color temperatures of _____. - correct answer -3,000°K The resistance of a tungsten filament is ______. - correct answer -much higher after the lamp is turned on The filament of a tungsten-halogen lamp is encased in a capsule containing iodine or _____. - correct answer -bromine gas Durin...

Straighterline Chemistry Final Exam Questions with Answers Which one of the following equations correctly represents the process relating to the ionization energy of X? Select one: a. X(s) → X+(g) + e- b. X2(g) → X+(g) + X-(g) c. X(g) + e- → X-(g) d. X-(g) → X(g) + e- e. X(g) → X+(g) + e- - Answer-e. X(g) → X+(g) + e- Consider the element with the electron configuration [Kr]5s24d105p5. This element is Select one: a. a halogen. b. a transition metal. c. an alkali meta...

MCAT Organic ChemistryWhat are the four rules for writing resonance structures? - correct answer 1. Atoms must not be moved. Only electrons. 2. All resonance atoms must lie in the same plane. 3. Only valid Lewis structures are allowed. 4 . The number of unpaired electrons must remain constant. What are the two conditions for resonance? - correct answer 1. An atom must have a P orbital or a lone pair of electrons. 2. It must be single bonded to an atom that has a double or triple b...

According to the International Building Code (IBC), what is a fire partition, and where is it used? - The IBC defines this as a wall assembly having a fire resistance rating of one hour, used in: 1. Walls separating dwelling units 2. Walls separating guest rooms in Group R-1, R-2, and I-I occupancies 3. Walls separating tenant spaces in covered malls 4. Corridor walls At an owner's request, a contractor may include alternates in the bid documents. What is an alternate? - This is a constr...

2024 ATI MED SURG Content Mastery Exam Questions & Answers-A charge nurse is observing a newly licensed nurse provide care for a client who is receiving internal radiation therapy for the treatment of cervical cancer. For which of the following actions by the newly licensed nurse should the charge nurse intervene? A. Leaving soiled linens in a container in the client's room i B. Instructing visitors to remain 2 m (6 feet) away from the client C. Borrowing a dosimeter film badge from another ...

Chem 219 Unit 4 Exam Questions With 100% Correct Answers What are the four halogen elements? - answerF, Cl, Br, I organohalide compounds - answerOrganic molecules containing halogen atoms (F, Cl, Br, I) Examples of how organohalide compounds are used by humans - answer- have been found in marine life (algae, mollusks, sponges, etc.), bc they metabolize the high concentrations of inorganic chlorides and bromides that are found in the seas. - Industrially, organohalides find uses as solvent...

13.3 Elimination Reactions in HalogenoalkanesHow do halogenoalkanes typically react? By nucleophilic substitution How do halogenoalkanes react under different conditions? By elimination How does elimination reactions occur? A hydrogen halide is eliminated from the molecule, leaving a double bond in its place so that an alkene is formed What is the OH- ion from aqueous sodium or potassium hydroxide? A nucleophile and its lone pair will attack a halogenoalkane at C

How do halogenoalkanes typically react? - correct answer By nucleophilic substitution How do halogenoalkanes react under different conditions? - correct answer By elimination How does elimination reactions occur? - correct answer A hydrogen halide is eliminated from the molecule, leaving a double bond in its place so that an alkene is formed What is the OH- ion from aqueous sodium or potassium hydroxide? - correct answer A nucleophile and its lone pair will attack a halogenoalkane at C

Chem 219 Unit 4 Exam Questions With 100% Correct Answers What are the four halogen elements? - answerF, Cl, Br, I organohalide compounds - answerOrganic molecules containing halogen atoms (F, Cl, Br, I) Examples of how organohalide compounds are used by humans - answer- have been found in marine life (algae, mollusks, sponges, etc.), bc they metabolize the high concentrations of inorganic chlorides and bromides that are found in the seas. - Industrially, organohalides find uses as solvent...