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Can you name the answers to these increasingly difficult high school chemistry questions?
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If you're stuck on a problem, type "Hint X" for the problem number to get a hint for question "X".
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1. What is the basic unit of matter?
2. What are the two subatomic particles that have significant mass?
3. What is the name of the smallest element by mass?
4. What is the term used to measure 6.022x10
units, particularly atoms?
5. What are the three classical states of matter?
6. What are the two types of substances which function by either donating or receiving a proton, a.k.a. H
7. What would be the two products if you were to mix equal moles of strong acid hydrochloric acid and strong base sodium hydroxide?
8. What kind of molecular bond happens between two nonmetals?
9. What is the formula for the ideal gas law?
10. What is the name of a reaction that absorbs heat?
1. The term originally comes from the Greek word for 'indivisible.'
2. Both these particles reside in the nucleus, and neither is an electron.
3. This element, abbreviated H is the most abundant element in the universe.
4. This term shares its name with common underground rodent.
5. You may be more familiar with ice, water, and water vapor, which are all H
O in these three states.
6. Two common household examples of these are vinegar and ammonia.
7. There are oceans of them throughout the globe.
8. Instead of an ionic bond that transfers electrons, this type of bond merely shares them.
9. The variables involved are pressure, volume, temperature, the number of moles, and a constant.
10. This question would appear in the Thermodynamics section of your textbook.
A hydrogen bond is actually an intermolecular force, not a bond.
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Chemistry 101 Quiz
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Mar 6th, 2010 at 08:02 GMT
Please show the answers at the end of the game.
Mar 6th, 2010 at 08:53 GMT
Maybe it's because English is not my first language, but I got the first question all wrong. I thought about (SI) units like mole, (kilo)gramme and cubic metre.
Mar 6th, 2010 at 13:36 GMT
@montylaw: Because of the nature of the quiz, I can't do that. It's Sporcle's new sequential system. It's the same reason it only shows the "hint x" of the first hint you find, and if you finish the whole quiz, it shows you the first bonus hint.
Mar 6th, 2010 at 15:34 GMT
You should accept avogadros number
Mar 6th, 2010 at 16:18 GMT
I suppose. "Mole" should be much easier to get than Avogadro's number, and the hint references it, but if you really want to go out of your way, why not.
Mar 6th, 2010 at 19:18 GMT
The ideal gas law can also be written as PV=N(kB)T, where N is the number of molecules and kB is Boltzmann's constant. So you might consider accepting pv=nkt or pv=nkbt as well...
Comment below threshold:
Mar 7th, 2010 at 20:40 GMT
Plasma is considered a fourth state of matter.
Mar 8th, 2010 at 04:34 GMT
He's talking about the classical states. There are plenty of states of matter, so there is no particular reason why anyone should include plasma without also worrying about quark-gluon plasma, fermionic condensate, etc.
Mar 8th, 2010 at 05:35 GMT
Added Boltzmann's constant to PV=nRT. And yes, this is meant to be relatively simple and high school based. Most high schools don't delve into plasma as a 4th state of matter.
Mar 8th, 2010 at 13:30 GMT
I don't know about "increasingly difficult", I had to get the hint for #4, while #5 is primary school science.. I wouldn't know about the ones past 7 since I got completely stuck on that.
Mar 8th, 2010 at 20:49 GMT
Questions 1-8 and 10 are far too easy, question 9 is too difficult. The questions are supposed to be in ascending order of difficulty.
Mar 9th, 2010 at 03:04 GMT
Including the hints, anyone who just came out of HS chemistry should find every one of these too easy. But many Sporcle players don't remember most of their chemistry necessarily, and as such this is an opportunity for a refresher course, perhaps. As for complaints about easy and hard, I can agree that #5 is far too easy. However, I think I'll leave it where it is because it gives an easy question people can feel good about, and also somewhat follows a pretend curriculum (you would discuss states of matter somewhere around the time you discuss bonding).
Comment below threshold:
Mar 9th, 2010 at 21:05 GMT
endothermic = endergonic. you should accept both
Mar 9th, 2010 at 22:14 GMT
At my elementary school, in fourth grade science, we learned that plasma was the fourth state of matter. My elementary school was but mediocre, so I hope that at least a significant portion of high school chemistry courses mention what plasma is. Although I've been out of chemistry for 3 years, I found this far too easy. I understand that you want not to make this too hard, but how about some medium questions I actually have to think about, near the end? I took chemistry three years ago, by the way, and wouldn't count that as "fresh out of HS chemistry."
Mar 10th, 2010 at 00:38 GMT
Added endergonic as a valid answer. Also changed "three states" to "three classical states" ... I understand much modern theory considers plasma a 4th state, but anyone who was born before a certain point would only have learned the three main states. And while yes, these questions may seem easy to you (as they would if I took the quiz), to many they don't. There are people who don't know what PV=nRT is, even given the hint which gives them 3 1/2 of the variable letters. The questions are meant to be accessible to everyone, such that even someone who hasn't taken chemistry in 30 years would have a chance of finishing.
Mar 10th, 2010 at 04:59 GMT
Endergonic does not have the same meaning as endothermic. An endergonic reaction is a reaction for which the change in free energy is positive which does not necessarily meant that the system absorbs heat. For example, converting liquid water into ice at room temperature is endergonic even though such a conversion would release heat.
Mar 14th, 2010 at 02:38 GMT
Mar 14th, 2010 at 23:06 GMT
I agree with yggdrasil; endothermic processes may be endergonic, but only if the entropy change is unfavorable or not sufficiently favorable. The two terms are not synonymous. Also, salt is a general term. It is not KCl, CaF2, etc. that is produced, but rather NaCl. Though it's commonly known as salt, it is certainly not the only one.
Mar 18th, 2010 at 01:01 GMT
Technically, your description for acids and bases is overspecified. Acids need only be electron acceptors while bases need only be electron donors...the proton transfer is a special subcase called Bronsted-Lowry.
Mar 18th, 2010 at 15:47 GMT
True, but most Sporclers are more likely to know the Brønsted-Lowry or Arrhenius definitions than the Lewis definition.
Apr 1st, 2010 at 20:30 GMT
Question 8 is a bit weak. It says between two non metals... meaning what exactly? A hydrogen bond is between two non-metals, as is an ionic bond.
Apr 2nd, 2010 at 05:27 GMT
From the start I've had that coded in as a bonus answer - type "hydrogen bond" and a bonus answer comes up explaining that a hydrogen "bond" is not actually a bond, but an intermolecular force. Electrons are not exchanged between atoms in a hydrogen bond - there's only a sort of dipole attraction between an essentially naked proton and an electronegative atom. Also removed endergonic as an answer for #10.
Apr 2nd, 2010 at 20:19 GMT
Also, ionic is almost always between a metal and a non-metal. The key difference is the difference between the electronegativites. If you want to be purely technical, a purely ionic bond doesn't exist, as every bond has some level of covalency (only a few % on a standard ionic bond like Mg-O, and even 50% on a bond between a metalloid and a non-metal, such as Si-O). Please remember that this is based on high-school knowledge. If you were to ask any high school student or teach what type of bond is between two nonmetal elements, they will answer a covalent bond.
May 22nd, 2010 at 19:25 GMT
Good quiz. What's the scoop with the question that pops up at the end about the Greek 'indivisible' term? I know the answer is 'atom', but I couldn't enter it.
Jun 8th, 2010 at 02:58 GMT
i would try to spell avogadro instead of mole
Aug 13th, 2010 at 22:48 GMT
For 6, you could just as well accept 'electrophile' and 'neutrophile.'
Aug 15th, 2010 at 02:20 GMT
I disagree that question 9 is too difficult. Only about 1 in 7 people got that far and then missed question 9.
Aug 27th, 2010 at 21:24 GMT
You could possibly reorder some questions... or change #5/reword it slightly to make it trickier. And I'd personally would have liked to see "table salt and water" or "NaCl and water" as the official answer for #7 (of course, still accept salt and water, etc), because salt is a metal+nonmetal in general...
Sep 16th, 2010 at 04:16 GMT
I don't really know how to answer number 2...you should accept a few alternatives to that such as "protons, neutrons" or "neutrons and protons".
Dec 11th, 2010 at 05:07 GMT
I can't believe I got #9... by remembering pivnert!
Dec 13th, 2010 at 18:35 GMT
Added in the plurals for question #2. Also changed the displayed answer for #7 as "Table Salt and Water." Also, @thejazzkickazz, you had already answered that one - it was "Hint 1" for Question #1 (to which the answer is "Atom").
Mar 2nd, 2011 at 19:45 GMT
@cthulhu I think you mean nucleophile, not neutrophile. However, that wouldn't be a valid alternative, as neither donate nor recieve protons, but instead attack or are attacked by electron rich or electron deficient areas of a molecule.
Mar 23rd, 2011 at 03:50 GMT
this quiz was very very easy
Mar 31st, 2011 at 23:11 GMT
Great quiz, but I might significantly decrease the time.
Apr 11th, 2011 at 11:51 GMT
Great quiz. I'd like to say it's educational, but that would mean learning something from this, which is quite impossible seeing as you can't see the missed answers. Still, a great test of basic chemistry. I really want to see this go on the home page, and making all of the bonus answers and different acceptable answers must have taken a while. Congratulations to naturefreak.
May 5th, 2011 at 20:01 GMT
For science people, this quiz is easy. However, you could make a few improvements, like having only one question mark with each response, showing all of the questions to start the quiz, and more questions. Also, certain responses could have more than one answer, so clarity is something you should work on should you create another quiz.
May 29th, 2011 at 23:34 GMT
Mole should be accepted for basic unit of matter. Just throwing that out there.
May 29th, 2011 at 23:37 GMT
Solid, liquid, gas should be accepted without having to put 'and' before the last word. You are making an easy quiz difficult for no reason
Jun 23rd, 2011 at 09:26 GMT
The ideal gas law only occurs in physics a level not chemistry so that's not high school chemistry
Apr 18th, 2013 at 08:00 GMT
This test is fine. The Ideal Gas Law is always covered in high school chemistry. "Mole" is not a basic unit of matter.
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