because its made of metal
The only use I can think of of the word "thief" in science is in the phrase "oil thief", which is a device used to obtain samples of petroleum or petroleum products for analysis.
you call it chemist i think
Tin has two forms (allotropes) one is "white tin" (beta-tin) which is a metal although some chemists/metrial scientists would call it a "poor metal"- and "grey tin" (alpha-tin), a low temperature form, which has a similar structure to diamond and more covalent in character. So one allotrope is a metal and the other isn't. Probably the answer a school teacher expects is tin is metal.
Lithium is the metal. It isn't used for mental medication, but its compounds are. People often call the medicine lithium, but it's not chemically correct.
I think what you are asking for is amphibian. An animal capable of living both on land and in water.
apkido
i think its called a blacksmith
What type of device do you want it to be? I would call it an electronic device, but perhaps that is not the answer that your teacher is looking for. Can you think of a better way to ask the question?
Tatame, Japanese word (I believe) for the mat they use for grappling.
Its called a Intra-uterine Device or IUD, usually more wire or piece of plastic than a plate.
electronic promting device
You call someone that studies metal a metallurgist.
Such a device is called a siren.
You call that person a Metal Head. \M/(>.<)\M/
A wireless device, that lets you transfer, answer, or call for data from a device, like a Computer, or phone.
vastuvu
Metal smiths, metal workers, or metallurgists