What is pure substance answer?
Answer: Any substance is said to be pure if and only if it is made up of single type of particles means all the particles of that substance should be of same chemical nature. For example water, sugar, salt, Sodium, Tin etc. There are two types of pure substances that are Elements and Compounds.
What is meant by pure substance give example?
In chemistry, a substance is pure if it has a homogeneous chemical composition. At the nanoscale, this only applies to a substance made up of one type of atom, molecule, or compound. Examples of pure substances include iron, steel, and water. Air is a homogeneous mixture that is often considered to be a pure substance.
What is a pure substance simple definition?
A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.
How is gold used in technology?
Gold is used in electronics mainly in the form of electroplating chemicals, gold bonding wire and sputter targets. Smaller quantities are used in hybrid inks and solders. The largest use of gold in electronics is as an electroplated coating on connectors and contacts.
Is silver used in medicine?
Silver is added to some bandages for its antimicrobial effect. The medical uses of silver include its use in wound dressings, creams, and as an antibiotic coating on medical devices. Wound dressings containing silver sulfadiazine or silver nanomaterials may be used to treat external infections.
How is gold used in mobile phones?
Gold is used in mobile phones because it is a great conductor of electricity. It’s also used in connectors elsewhere; only two metals are considered better conductors of electricity than gold: silver and copper. The Gold connectors are also used for transmitting digital data fast and accurately.
Is gold used in phones?
Smartphones contain about 60 different elements – including not only gold but copper and silver too. All three are good conductors of electricity, and circuits usually receive a thin covering of gold because it doesn’t corrode and so ensures a durable connection.
How much gold is in my phone?
There are 0.034 grams of gold in each cell phone, according to the U.S. Geological Survey. That’s the equivalent of 0.001 troy ounces, worth about $1.82 at today’s prices. There are also 16 grams of copper, worth about 12 cents, 0.35 grams of silver, worth 36 cents, and 0.00034 grams of platinum, valued at 2 cents.