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Alloys are metal mixtures. For example, Sterling silver is a mixture of silver and copper.
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∙ 11y ago
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Why are airplanes made from aluminium alloys rather than pure alloys?
Alloys basically mean "a mix". A "pure alloy" would mean a pure mix. That doesn't really work. Alloys are generally used instead of pure metals b/c the characteristics of the Alloys are better than those of the pure metals. Aluminium Alloys are generally considerably stronger than pure aluminium while still being pretty much the same weight.
Into what two broad classes can all matter be divided?
Pure substances (elements and compunds) and mixed substances (mixtures, solutions, alloys).
Why are alloys often used instead of pure metals?
Alloys are sometimes more useful than pure metals because alloys tend to be stronger though not necessarily. Pure metals tend to be softer than alloys, which are a mix of two or more metals, and therefore get dented, scratched, or broken more easily. Gold used in jewelry is a good example. Metal alloys have different structural and behavioral characteristics than pure metals. Alloying a metal also gives it a different appearance. In some cases alloys may result in a lighter metal without sacrificing other necessary characteristics. They may also be more cost effective.
Why alloys of aluminium are used to make aircraft bodies instead of pure aluminium?
Alloy aluminum is lighter in weight.
Why are alloys used instead of pure metals?
Because alloys often have better properties than their parent metals. Stronger, rust resistant etc
Alloys are commonly used in manufacturing. Which of the following is not a reason to use an alloy instead a pure metal?
Cast iron is more brittle than pure iron.
Why do we use alloys instead of pure metals?
Alloys are sometimes more useful than pure metals because alloys tend to be stronger though not necessarily. Pure metals tend to be softer than alloys, which are a mix of two or more metals, and therefore get dented, scratched, or broken more easily. Gold used in jewelry is a good example. Metal alloys have different structural and behavioral characteristics than pure metals. Alloying a metal also gives it a different appearance. In some cases alloys may result in a lighter metal without sacrificing other necessary characteristics. They may also be more cost effective.
Is steel pure or inpure?
Steel is the name for several alloys of iron with other substances to improve its strength, or its corrosion resistance, or some other property. Since there is no one substance called 'steel' but a whole group, then it cannot be a pure substance. By chemistry definitions there are only 2 pure substances, elements and compounds.
What are three advantages of some alloys when compared to pure metals?
Alloys are sometimes more useful than pure metals because alloys are stronger - or tougher (toughness is resistance to fracture). Pure metals tend to be softer than alloys and therefore tend to get dented, scratched, or broken/fractured more easily. Alloys are often lower cost than pure metals but not necessarily so. As an example, stainless steel is more expensive than pure iron.
Which terms refer to the smallest pure substances elements and isotopes mixtures and alloys metals and nonmetals molecules and atoms?
An atom is the smallest particle possible of a pure substance. A molecule is the smallest possible particle of a compound.
What appears to be a pure substance but is not?
Alloys.
Explain why are alloys a useful improvement over pure metals?
Alloys are useful improvement over pure metals because they tend to be stronger.
