Any Chemistry freaks out there??

[ScatterPlot]

Milk is a colloid, cause it's suspended particles in water (I guess that's water). Ice cream would be more of a solid, and I don't think solids can be colloids. I'm pretty sure about this one.



Metalloid- I found out that Silicon is indeed a metalloid. Silicon is in transistors. I don't know if you need to be able to bring in the item or have a oure sample of it or whatever, but it is found in almost every electronic item around. If you need a transistor, pick up a pack of like 10 or so at Radio Shack for like $3. About the other 2...
The salt formed with H2SO4 and MG(OH)2 is MgSO4, and I don't know where to get that. Search on the Internet and you will be bound to find something with that in it. Good luck!
Bert

[SSMercury]

yeah, this thread is ancient, but I'll answer the unanswered ones for fun.


4. a magnesium salt(this is one of those that can be in something else, but the magnesium salt must be an active ingredient)---

Magnesium chloride is common in sea salt.

14. a salt produced when magnesium hydroxide reacts with sulfuric acid (must be active ingredient!)

MgSO4 is the salt produced. Hm, Magnesium Sulfate....not something I think of much use for.

16. aluminum foil. Easy one.

18. pencil lead, definately.
19. CaCO3---Chalk, also Tums, or any other "antacid", CaCO3 reacts with stomach acid to raise pH.
23. yes, copper

[DJBacon06]

haha, Holy crap dude. That was part of a project i did in 10th grade last year! But thank you for your help!

[SSMercury]

The thread came up in a search I did, and it sounded like an interesting title, so I read it all and rdecided to revive it. Now, to put it back in the ground again.

But I'd still like to know the answer to number 14, I still can't think of a use for magnesium sulfate.

[DJBacon06]

The thread came up in a search I did, and it sounded like an interesting title, so I read it all and rdecided to revive it. Now, to put it back in the ground again.

But I'd still like to know the answer to number 14, I still can't think of a use for magnesium sulfate.

If I remember correctly, magnesium sulfate is found in many fertilizers... :)

[B.A.M.]

#16 (aluminum or silicon)
hope this helps

[Glickman]

*Note above, i dont believe aluminum is a metalloid, i believe its the only exception


4- Magnesium Gluconate (Magonate is the product name) its a salt, in the form of a tablet, used apparently for "producing soft bowel movements"

16-metalloids are found between the metals and nonmetals on the periodic table, so youve got:
Boron
Silicon
Germanium
Arsenic
Antimony
Tellurium
Polonium
*Aluminum is i think is the only exception

[DJBacon06]

hahaha, guys, guys, guys! I appreciate your help, but please let this thread die back again! i turned this project in LAST YEAR!! But if you guys want to continue to guess, be my guest. lol

[Confused]

Help with Chemistry Project Quickly Please!!!

hahaha, guys, guys, guys! I appreciate your help, but please let this thread die back again! i turned this project in LAST YEAR!! But if you guys want to continue to guess, be my guest. lol

I have to do basically the same thing you had to do but I have to find a few different items and I really need some help!!!!

1. Green cellulose sheet
2. Something with a density greater than 1
3. Allotropic form of carbon
4. Result of a chemical change (write reaction equation)
5. 6.02 x 10 (23) particles of anything
6. Method to separate a mixture of sulphur, iron and salt with details diagramed
7. A hydrocarbon
8. Substance that dissolves exothermically
9. Acid rain equation
10. Solid substance containing C4H10
11. Ions
12. Alloy, name also used as a mild derogatory term for superior officer
13. Description of electricity and chemical change reaction
14. Example of conservation law (physical science law)
15. Element in the fourth energy level more than one oxidation number
16. Healthful combination of carbon, oxygen, hydrogen and nitrogen (include formula)
17. Metallic sandwich worth a cent
18. Substance containing a species isoelectric to neon
19. Substance which exhibits Tyndall effect

[grEnAlEins]

I have to do basically the same thing you had to do but I have to find a few different items and I really need some help!!!!

1. Green cellulose sheet A Leaf
2. Something with a density greater than 1 Rock
3. Allotropic form of carbon graphite, it is the "lead" in pencils
4. Result of a chemical change (write reaction equation) of a combustion, that is super easy...hydrocarbon + O2 ----> (X)CO2 + (Y)H20
5. 6.02 x 10 (23) particles of anything One liter at 1 atm of any gas OR take the atomic weight of any substance, and get that many grams of it
6. Method to separate a mixture of sulphur, iron and salt with details diagramed look at a solubility chart
7. A hydrocarbon gsoline/propane/butane
8. Substance that dissolves exothermically Lock DeIcer/Snowmelt
9. Acid rain equation (X)CO2[g] + (Y)H2O[l] -----> (Z)Carbonic acid [aq]
10. Solid substance containing C4H10 BIC lighter
11. Ions Table Salt
12. Alloy, name also used as a mild derogatory term for superior officer copper, a penny
13. Description of electricity and chemical change reaction not 100% sure about the rxn, but you start with H2SO4
14. Example of conservation law (physical science law) any rxn involving a mass of somthing, or do a rxn showing energy flow/thermodynamics
15. Element in the fourth energy level more than one oxidation number look on a periodic table and pick one, there are several
16. Healthful combination of carbon, oxygen, hydrogen and nitrogen (include formula)
17. Metallic sandwich worth a cent
18. Substance containing a species isoelectric to neon Na+1 ion, dissolve salt in water and find a cation to percipitate the Cl- out of solution
19. Substance which exhibits Tyndall effect anything slightly soluable in water, again look at a soluablity chart in your book

Also go to a local library and use the Merck/Merk (sp?) Index. I took AP Chem, but that was a year ago now, I do not recall exactly where to find half of that junk...

Sorry I could not help more, but that is all I remember off the top of my head

EDIT: One post?!?! You registered just for this!!!

EDIT part duex: Here is to a deticated dude who used the search feature

[tropical_fishy]

Edit: I can read, yay!

[grEnAlEins]

23 is not copper, but cobalt. Copper turns solutions green, not blue.

That one is two years old duder, the second guy only gave 19

Edit: I can read, yay!

You crack me up!

[billybob_81067]

I have to do basically the same thing you had to do but I have to find a few different items and I really need some help!!!!


17. Metallic sandwich worth a cent

Wouldn't this be one of the newer pennies that are nickel coated with copper?

[grEnAlEins]

Wouldn't this be one of the newer pennies that are nickel coated with copper?

Thats what I thought too, but it seemed too easy...

[Confused]

I need a little more help!! Please!!

Also go to a local library and use the Merck/Merk (sp?) Index. I took AP Chem, but that was a year ago now, I do not recall exactly where to find half of that junk...

Sorry I could not help more, but that is all I remember off the top of my head

EDIT: One post?!?! You registered just for this!!!

EDIT part duex: Here is to a deticated dude who used the search feature

Thanks for ALL your help but if anyone else can help me with #7, #9, #14, #15, #16 and #18 it would be greatly appreciated. Thanks again!