Nuama Chnishan Causell Hour Exam 3 Chemistry 101 Dr. Hellwig October 20, 2017 11
ID: 544623 • Letter: N
Question
Nuama Chnishan Causell Hour Exam 3 Chemistry 101 Dr. Hellwig October 20, 2017 110 points possible graded on the basis of 100 1. Define "acid" as we did in class.H +donor or protan Give the name or formula of an example of a strong acid. -Acehr-Acro-e-H3 e00h Aet/ e, d ( 2. Define "base" as we did in class AtAceptor - Give the name or formula of an example of a strong base. 3. All ot the following are acids except 4. A neutralization reaction: a) gives off heat b) absorbs heat c) is endothermic d) gets colder 5. Acids and bases conduct electricity (cause the light bulb to light up in the demo during class) because they: a) make a battery c) have chemical energy in them b) form ions in water d) convert chemical energy to light energy 6. All the following are true about a base except a) it feels slippery c) it has a pH less than 7 b) it tastes bitter d) it neutralizes acids 7. The energy of the sun comes from: a) combustion b) endothermicity c) nuclear fission d) nuclear fusion 8. Which of the following is an exothermic reaction? b) steak being cooked on a grill a) wood burning in a fireplace c) a Cold Pack cooling a spraind) water evaporating to form steam 9. The statement that energy is neither created nor destroyed is an expression of which law? b)nd Law of Thermodynamics d) Law of conservation of momentum a) 1st Law of Thermodynamics c) 3rd Law of Thermodynamics 10. Organic chemistry is the study of: c) chemicals from plants b) chemicals from living systems d) natural chemicals a) carbon compounds 11. Which one of these causes fruit to ripen? d) ethylene b) benzene c) chloroform a) acetyleneExplanation / Answer
1. A substance which gives H^+ ions in aqueous solution is called acid
strong acid HClO4
2. A substance which gives OH^- ions in aqueous solution is called base.
strong base NaOH
3. NaCl is salt.
a, NaCl
4. All neutralization reactions are exothermic reaction.
a. gives off heat
5.b.form ions in water.
6.the PH value 7-14 for bases. So PH greater than 7
c. it has a PH less than 7
7. d. nuclear fusion
8.All combustion( burning) reactions are exothermic reactions.
a. wood burning in a fireplace
9.a. 1st Law of thermodynamics
10.carbon compounds
11. a acetylene
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.