/sci/ - Science & Math

This is the lightest element

This element is a significant part of stainless steel.

This element plays a key role in photography.

All isotopes of this element are radioactive

In the 1800s, this element had been thought to be identical to the element directly above it in the periodic table

The common names for the alottropes of this element are based upon their colors

This element can be very poisonous when inhaled

Most solar cells rely upon this elements natural properties

This element is synthetic

This element is the most malleable metal

This element is a shiny, silver liquid

This element is the most reactive nonmetal

This element can be substituted with the one above in organic compounds

Neither of these two elements are ferromagnetic, but their magnetic properties change when they are combined with each other chemically or physically in alloys

This element is the heaviest alkaline earth metal

This element is a lightweight metal through which x rays pass easily

These two elements share similar physical properties but the allotropes of one are much more widely known. One of them is found in organic compounds

Although every compound of this element is poisonous, it was once used to treat medical conditions

This element is shiny and reddish metal

Hydrochloric acid had a considerably more dramatic effect on this element than it did on other metal's in this element's group

This element was used to plate steel to make cans

This test sounds fucking retarded

looks like you should have been paying more attention in class. this is not a homework helpline. this is a board for the discussion of science.

>This element has the highest melting point of all metals

Tungsten?

Magnets is Neodymium. Not sure of the spelling.

>>1990595

you would understand if you had this teacher.

>This element is an essential nutrient for plant growth and is found in most soils, essential to human diet

Phosphorous ?

>This is the lightest element

H

>This element is a significant part of stainless steel.

Fe

>This element is the most reactive nonmetal

F

>This element decays very quickly

At

>This element can be very poisonous when inhaled

I

>This element was used to plate steel to make cans

Sn

>This element produces a violet vapor with an extremely unpleasant order when burned

I

useful but poisonous... mercury??

>>1990626

even if the teacher is an asshole, you are still wasting our time by not first consulting wolfram alpha and google.

Also, the fact that you come here for information which your grade may depend upon makes me worry for your judgment. 4chan isn't the most reliable source of information at the best of times, even when those who are replying aren't actively trying to troll you.

i'll post tits of her if we get enough

>These two elements can form a compound to make "hard water"

Calcium carbonate?
- calcium
- carbon
- oxygen

..but that's three...not sure that's the right answer

>>1990644

thanks man.

>These two elements share similar physical properties but the allotropes of one are much more widely known. One of them is found in organic compounds

C and Si?

meow

>>1990658

You lie

>This element has the highest melting point of all metals
tungsten

>These two elements can form a compound to make "hard water"
hard water is usually minerals dissolved into water. theres not really a specific element, but it's usually things with calcium or silicon in them

>This element decays very quickly
Astatine has the shortest half life, but lots of elements decay quickly

>This element is used to make magnets
Magnesium? xD
But srsly.
Magnets are usually made out of iron, cobalt, or nickel, but they can also be made out of rare earth metals like dysprosium

If you drink these 2 elements in a compound, doctors can see your digestive tract

This is what's called a tracer. A tracer is usually a different isotope of something normally found in the body, like carbon or oxygen (they're always radioactive)

>>1990672
>>1990644
>This element is a significant part of stainless steel.
>Fe

Cr, the questions asks about Stainless, it's a simple every day question about it's weather resistance.

Chemfag + Blacksmith talking. Material Science for the win.

Also, google shit.

>>1990707
About the last one. It's usually not a radioactive tracer but a barium salt as they are radio-opaque

These questions are stupid. Like, really stupid.

I'm a chem major.

Things like: "This element is a silvery metal that was submerged in some sort of oil" don't make sense by themselves, and must be referring to some specific discussion in your class.

Unless your teacher believes that an element is manufactured by being placed in oil, which itself could refer to a large number of organic compounds. Certainly a compound with two elements can undergo a subtraction in a solution, but without further information the question is unanswerable.

Though humorously, the question makes a whole lot of sense if your teacher is trying to teach you alchemy, since the question implies the element underwent transmutation.

As for others:

"This element is an essential nutrient for plant growth and is found in most soils, essential to human diet" Sounds like it's carbon or calcium. It's really really ambiguous though.

Essentially, most of these questions or either extremely vague and allow for multiple correct answers or just don't make sense.

>>1990702
i don't lie when it comes to mother fucking chemistry, my friend.

>All isotopes of this element are radioactive

U, Pu

>Hydrochloric acid had a considerably more dramatic effect on this element than it did on other metal's in this element's group

http://www.youtube.com/watch?v=jBzkSN-zMNw#t=30s

>>1990719

this is the worst teacher I have ever fucking had. she has her phd in chemistry and thinks she's the shit and runs everything when in reality she reads off powerpoints and drinks sprite all day. she's terrible.

>>1990714
Yep, not gonna argue.

>>1990724
K I am watching you...

>This is the lightest element
Hydrogen

>This element is a significant part of stainless steel.
Stainless steel is generally iron, carbon, and chromium.

>All isotopes of this element are radioactive
Prolly uranium

>The common names for the alottropes of this element are based upon their colors
Phosphorus (red and white)

>This element can be very poisonous when inhaled
This is really general. Radon? Fluorine? Chlorine? Lots o' things.

>This element is synthetic
Really?
...
Technetium and numbers 95 up on the periodic table.

>This element is the most malleable metal
Pretty sure this is gold

>This element is a shiny, silver liquid
definitely mercury

>This element is the most reactive nonmetal
Fluorine due to electronegativity

>This element can be substituted with the one above in organic compounds
Carbon and silicon, I guess. Not sure what this is really asking.

>This element is the heaviest alkaline earth metal
Radium

>This element is a lightweight metal through which x rays pass easily
Aluminium? I know that this is the lightest metal that people care to just leave out, every lighter metal is extremely fucking reactive.

>Although every compound of this element is poisonous, it was once used to treat medical conditions
Mercury. Gotta love old timey medicine.

I answered only the ones I know

just get a few moar and tits, I can google the rest and bullshit some of them.

>>1990732

I would believe it if you said she's a bitch, since these questions basically are "guess what element I'm thinking of", because only the ones that refer to a specific property held by only one element (e.g. the most reactive nonmetal is fluorine) they are at best a guess.

>>1990720
oh right thanks

>>1990719
"This element is a silvery metal that was submerged in some sort of oil"

Don't they store K in oil to stop it reacting with the atmosphere?

fuck it, you guys deserve em. thanks a lot. seriously. saved me a lot of time.
tits of her

>>1990658

I'll try my best here. Sorry that some aren't answered and some I'm unsure of.

>This element has the highest melting point of all metals
IIRC from middle school, Carbon.

>Voilet vapor
Iodine does this without burning it.

>This element is very useful but poisonous if ingested, so other metals are used in its place for different functions
Probably lead.

>This element decays very quickly
Quickly? Like, anything above U.

>This element is used to make magnets
ICP

>If you drink these 2 elements in a compoud, doctors can see your digestive tract
Barium, right? Maybe bismuth too.

>This element is a silvery metal that was submerged in some sort of oil
All of the alkali and some alkaline metals are like that:
Li, Na, Mg, K, Ca, Rb, Sr, Ca, Ba

>This element is an essential nutrient for plant growth and is found in most soils, essential to human diet
Phosphorus?

>This is the lightest element
HYDROGEN!

>This element plays a key role in photography.
Silver. Silver azide is photosensitive.

All isotopes of this element are radioactive
>Uh, Tc and everything above Bi.

>In the 1800s, this element had been thought to be identical to the element directly above it in the periodic table
There were a lot like this over history, but I think the one in question is gallium (below aluminum).

>This element can be very poisonous when inhaled
F, Cl, and vaporized Br and I. Hydrogen gives you fruity farts too.

>>1990832
>cont'd


>This element is synthetic
Anything above Plutonium? Technicium (43) can't be found on Earth but it's still created in supernova explosions. But since it has no stable isotopes it doesn't exactly hang around.

>This element is the most malleable metal
Gold!

>This element is a shiny, silver liquid
Mercury. Gallium (and germanium?) melt just slightly above room temperature though.

>This element is the most reactive nonmetal
Fluorine

>This element can be substituted with the one above in organic compounds
Chlorine

>This element is the heaviest alkaline earth metal
RAAADIUM

>This element is a lightweight metal through which x rays pass easily
Shit I don't know. Li and Be are pretty damn light.

>These two elements share similar physical properties but the allotropes of one are much more widely known. One of them is found in organic compounds
Carbon and silicon?

Although every compound of this element is poisonous, >it was once used to treat medical conditions
lol, mercury

>This element is shiny and reddish metal
derp, copper?

>Hydrochloric acid had a considerably more dramatic effect on this element than it did on other metal's in this element's group
copper?
>"metal is"?

>This element was used to plate steel to make cans
Tin, I assume.

>>1990786
I must have missed that post. However they all look like men. Secretly you just wanted to make it look like some whore wanted your approval for her own ego.

Not worth fapping to.

>>1990786
ew, not worth it at all dude

>>1990849
>>1990854


free tits are free tits.

>>1990832
>This element has the highest melting point of all metals IIRC from middle school, Carbon.

>metal
>Carbon

The fuck

>>1990873
>Carbon

SORRY. I wrote that, then read "metal," then remembered that astronomers consider everything above He as a metal, then laughed, then forgot to delete this answer.

Pic related.