Answer: Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation).

As a result, hydroxide ion can displace water from the copper (II) ion, yielding copper hydroxide, Cu(OH)2, a blue precipitate. Heating copper hydroxide produces copper oxide, CuO, a black solid. Copper oxide dissolves in acid, regenerating the copper (II) ion, which once again binds to water.

Copper forms compounds in the oxidation states +1 and +2 in its normal chemistry, although under special circumstances some compounds of trivalent copper can be prepared. The pure compound is insoluble in water but soluble in hydrochloric acid or ammonia.

Metals like aluminium, iron and zinc do not react either with cold or hot water. But they react with steam to form the metal oxide and hydrogen. Metals such as lead, copper, silver and gold do not react with water at all.

Still, proponents of the trend suggest that you limit your copper water intake to 3 cups (710 mL) per day. High copper intakes may lead to copper toxicity in the long run. However, the amount of copper that leaches into water stored in copper containers is below the safety limits.

Copper lies below hydrogen in the activity series of metals, therefore it can not displace hydrogen from water which means it cannot react with water on strong heating.

Copper usually does not react with most dilute, cold acids. But it will react with concentrated, hot sulfuric acid. Copper Sulfate is used in Fehling’s solution and Benedict’s solution to test for reducing sugars, which reduce the soluble blue copper(II) sulfate to insoluble red copper(I) oxide.

Heated copper metal reacts with oxygen to form the black copper oxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water.

Silver does not react with pure water. Is is stable in both water and air. Moreover, it is acid and base resistant, but it corrodes when it comes in contact with sulphur compounds. Under normal conditions silver is water insoluble.

Silver is a well-documented antimicrobial, that has been shown to kill bacteria, fungi and certain viruses. It is the positively charged silver ions (Ag+) that possess the antimicrobial effect21, 22.

In her Stanford laboratory, Alia Schoen purifies water using a new method thousands of times faster than anything previous. It uses nanotechnology and silver. In the days before milk could be pasteurized or refrigerated, people would drop a silver coin into a bottle to preserve it. Silver is lethal to bacteria.

The antibacterial effect of silver ions (Ag+) has been known for centuries as ancient Greek used silver for stomach pains or wound healing. According to Mijnendonckx et al. [1], “silver was perhaps the most important antimicrobial compound before the introduction of antibiotics”.

The bactericidal activity of silver is well documented. Its benefit in reducing or preventing infection can be seen in several applications, including as a topical treatment for burns and chronic wounds and as a coating for both temporary and permanent medical devices.

Colloidal Silver Claims They claim it can boost your immune system, ease chest congestion, and treat or prevent viral infections like the common cold or COVID-19. You might also hear that colloidal silver helps treat conditions like cancer, HIV and AIDS, shingles, herpes, or eye problems.

Collins and his team found that silver — in the form of dissolved ions — attacks bacterial cells in two main ways: it makes the cell membrane more permeable, and it interferes with the cell’s metabolism, leading to the overproduction of reactive, and often toxic, oxygen compounds.

New research shows that low doses of silver can massively boost the effect of antibiotics on bacteria, making them up to 1,000 times more sensitive to the drugs.

Before modern antibiotics were developed, colloidal silver was used as an all-purpose remedy for various infections and illnesses. Recently, it has experienced a revival in popularity, with some claiming it can replace antibiotics or other medical therapies to treat bacterial, viral and fungal infections.

Taking colloidal silver along with antibiotics might decrease the effectiveness of some antibiotics. Some antibiotics that might interact with colloidal silver include ciprofloxacin (Cipro), enoxacin (Penetrex), norfloxacin (Chibroxin, Noroxin), sparfloxacin (Zagam), trovafloxacin (Trovan), and grepafloxacin (Raxar).

Conclusion. In summary, we have demonstrated that bacteria repeatedly exposed to subinhibitory concentrations of silver NPs can rapidly develop resistance to their antibiotic activity.

Silver Nanoparticles Show ‘Immense Potential’ In Prevention Of Blood Clots. Summary: Scientists are reporting discovery of a potential new alternative to aspirin, ReoPro, and other anti-platelet agents used widely to prevent blood clots in coronary artery disease, heart attack and stroke.

Recent tests of modern colloidal silver products found they had no significant antimicrobial properties and left most bacteria unscathed (even after six minutes).

Colloidal silver is an ingredient in some acne treatments and cosmetics. It’s also sometimes used in an eye drop formula to prevent conjunctivitis in newborns. As long as colloidal silver is used topically and in small amounts, it doesn’t pose a great risk of argyria.

In 2007, press reports described Paul Karason, an American man whose entire skin gradually turned blue after he took a homemade silver chloride colloid and used a silver salve on his face in an attempt to treat problems with his sinuses, dermatitis, acid reflux and other issues.

Additionally silver also provides protection against alcohol toxicity, upper respiratory tract infections and stomach ailments.

A daily colloidal silver supplement can drastically decrease the severity of a cold and also speed up the healing process. It’s recommended adults get 1-3 teaspoons of colloidal silver daily to ward off infection.

Silver is the key to reducing pneumonia associated with breathing tubes.

Chronic rhinosinusitis is a highly prevalent disease resulting in high economic burden. Effective therapeutic options are needed. Rhinosinusitis-related biofilms are a likely contributor to recalcitrant disease. Emerging evidence shows that colloidal silver nanoparticles may be effective for reducing biofilms.