Sometimes different metals are alloyed, and sometimes they are simply joined.
Plated metals would be the most common - such as galvanized iron sheet. Thermocouple elements may be made from bi-metallic strips. Iron and brass are common metals thus amalgamated for this use.
Alloys are in general of wide use - cupro-nickel is a very common heating element for electrical appliances. Magnesium is often alloyed with aluminum to improve its strength. For tool steels, vanadium, chrome, and nickel are common additives.
Metal in its natural state is a mineral occurring in the form of ore. It then needs to be mined, extracted from the ore and processed to make whatever. So a metal object is man made from a naturally occurring material. Unless of course it was made by a woman.
Perfume is considered a type of mixture. It is a homogeneous mixture since it is made of different chemicals that are mixed into one consistent form.
A jar of coins can not be necessarily called as any sort of mixture as it would include articles of same type. It would rather be better to ask what type of mixture makes up a coin itself. Well, most coins are made up of 'alloy', which is a homogeneous mixture of several metals, prepared by mixing them in the molten state.
Salt water is definitely a mixture, a mixture of water and salt. It's not a pure substance because it's conformed of two components that aren't noticeable to the naked eye, but that can be easily separated.
Air is a mixture, made mostly of the elements nitrogen and oxygen. It also has some other gases, such as argon (element), carbon dioxide (compound), and water (compound).
made from a mixture of rocky material and metals
Because they're made up of different types of material
The mixture is called a composite. This is a material that is made by combining two or more different substances to create a new material with improved properties.
A metal alloy mixture of two or more metals and a solution is a mixture of two or more substances so they are the same.
Coins are made of a combination of elements, typically metals like copper, nickel, and zinc. These metals are mixed together in specific proportions to create the material from which coins are minted. Therefore, coins are not elements themselves but are composed of a mixture of different elements.
No, keys are typically made of a combination of metals, such as brass, nickel, or steel. The different metals provide strength, durability, and resistance to wear and tear.
compound
Copper wire is a substance because it is made up of a single type of material, which is copper. It is not a mixture of different substances.
Roman tub faucets are made of different types of metals, typically bronze, brass, steel, or nickel.
All of the different substances that can be seen in a heterogeneous mixture include alloys, solutions, suspensions, and colloids. In chemistry, a mixture is a material system that is made up of two or more different substances.
A fork is a physical object made of a single material, typically metal or plastic. Therefore, a fork is considered a pure substance, which falls under the category of elements or compounds depending on the material it is made of.
alloys (which are a mixture of 2 or more metals) are made because it produces a new material which is stronger/more resistant to heat/more rigid/more easily manipulable and so make the resultant material more usable a common example is steel which is a mixture of iron (which when left exposed to the elements may rust) and carbon. The result is a very strong material which will not rust and is therefor more useful