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What is true about metals used for jewelry such as platinum and gold?
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Which is true about metals used for jewelry such as platinum and gold?
they have low reactivity
What is the most true about both sodium and gold?
They are both metals.
What is true about transition metals?
Transition metals are elements that also have the properties of metals. All of them have high heat conductivity, low ionization energies and high melting points. Examples of transition metals are vanadium, nickel, and zinc.
Does metal react with bases to produce salts?
No. Metals react with nonmetals or acids to produce salts. Salts can also form when acids react with bases.
Is most metals reactive.?
It is not true; some metals are not so reactive and noble metals are practically unreactive.
Which is true about metals used for jewelry such as platinum and gold?
they have low reactivity
Metal is quite reactive and is never free in nature?
Yes, it's true for almost all metals. But some metals like Copper, Mercury, Silver,Gold and Platinum are very less reactive and sometimes occur in free state in nature.
What is the most true about both sodium and gold?
They are both metals.
Is it true lead and gold both freeze at low temperatures for metals?
Yes
Europeans paid for African slaves with gold and other precious metals. True Or False?
with both weapons and gold
What is true about both sodium and gold?
They are metals. They are in the same group. They are very reactive. They are volatile.
Can jewelry rust?
One of the properties that is precious about precious metals is their resistance to corrosion. That is especially true of gold. Gold does not form molecular compounds with any other element. Rust, on the other hand, is the result of iron atoms combining with oxygen atoms to form iron oxide (the fancy name for rust).
Was Roman jewelry expensive?
Is jewelry today expensive? It depends on what you are purchasing. 10k gold costs less than 18k gold. It was true then and now. Also, the jewelry maker has to determine how much time it took to conceive and create the piece and how much that time needs to accrue monetarily.
Was gold found thousands of years ago because it exists naturally as pieces of uncombined metals?
Yes, gold was found thousands of years ago because it is often found in nature in its pure form as nuggets or grains, rather than combined with other elements. This made it easily visible and recognizable to ancient peoples as a valuable and desirable material.
What metals react with acids true or false?
There is a fault with the question. Acids react with metal -TRUE What metals react - all will with the right acid - some need extremely strong acids -gold for example needs aqua regia
Does bronze jewelry turn your skin green?
Gold-tone over base metal is not the same as gold. Silver-tone over base metal is not the same thing as silver. Many base metals are used to make jewelry, and they are often coated with paint to make it look like gold or silver, but once the paint wears off, the metal can react with the skin and turn it green. This is especially true of jewelry that is made of copper and then coated with paint. Copper reacts to the sweat in a person's skin, and turns green. Gold-filled and gold-plated jewelry may also have certain base metals that react with a person's skin. The same is true of silver-plated and silver-filled. Sterling silver, Bali silver and such are not reactive and should not turn the skin green. Gold should not turn the skin green. Electroplate is another way of fusing gold or silver to base metal, and it is very durable, but if the plating ever cracks, the base metal could be reactive with the skin. The way to avoid purchasing something that will turn your skin green is to check for the tiny stamp imprinted on gold (it will tell how many carats of gold the jewelry is made of) and sterling silver (it will say sterling, and perhaps be accompanied by some numbers).
Why white gold are not good?
Because it is normally plated, so the colour rubs off after a while <><><> True white gold is not a plating, but an alloy of gold with other metals. Some people confuse white gold with silver, so it may not be as "impressive" as yellow gold.
