What is a platinum sponge?

: metallic platinum in a gray porous spongy form that is obtained by reducing ammonium chloroplatinate, that occludes large volumes of oxygen, hydrogen, and other gases, and that is used as a catalyst.

Whats the definition of sponge?

English Language Learners Definition of sponge (Entry 1 of 2) : a piece of light natural or artificial material that becomes soft when it is wet, is able to take in and hold liquid, and is used for washing or cleaning. : a type of sea animal from which natural sponges are made. : sponge cake.

How do you describe a sponge?

Sponge is a very light soft substance with lots of little holes in it, which can be either artificial or natural. It is used to clean things or as a soft layer.

What is Sponge person?

If you absorb knowledge or information easily, people may call you a sponge. And if you live off someone else’s generosity, taking handouts and giving nothing in return, you sponge off of them.

How is platinum sponge made?

Platinum sponges are made of platinum that is almost 100% pure. It’s interesting – to make platinum sponge, a chemical agent is added to molten platinum. When that agent is removed, the sponge that remains is nearly pure platinum – in most cases, 99% pure or even more.

What is palladium sponge?

Palladium sponge is a high purity, coarse powdered or granular form of palladium metal with high porosity. Palladium sponge has a wide variety of uses including functioning as an oxygen getter and catalyst..

What is a sponge used for?

A sponge is a tool or cleaning aid made of soft, porous material. Typically used for cleaning impervious surfaces, sponges are especially good at absorbing water and water-based solutions. Originally made from natural sea sponges, they are most commonly made from synthetic materials today.

How is sponge made?

Synthetic sponges are made of three basic ingredients: cellulose derived from wood pulp, sodium sulphate, and hemp fiber. Other materials needed are chemical softeners, which break the cellulose down into the proper consistency, bleach, and dye.

What is the classification of a sponge?

Porifera
Sponge/Scientific names

The approximately 8,550 living sponge species are scientifically classified in the phylum Porifera, which is comprised of four distinct classes: the Demospongiae (the most diverse, containing 90 percent of all living sponges), Hexactinellida (the rare glass sponges), Calcarea (calcareous sponges), and Homoscleromorpha …

What term best describes sponges?

Sponges constitute the phylum Porifera, and have been defined as sessile metazoans (multicelled immobile animals) that have water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella.

What is a living sponge?

The sponges are living animals that live in the water. They are stuck to the floor in the oceans, sea, and rivers. They are known as Porifera. The Poriferans are simple multi cellular animals.

What is the sponge form of platinum group metals?

Sponge is a powdered form of a platinum group metal (pgm). Commonly, sponge is the form required for manufacture of many pgm-based chemicals and catalysts. The Johnson Matthey Base Prices relate to pgm in sponge form.

How are sponges different from all other animals?

Sponges are unusual animals that live in water. They do not have the body parts that most animals have. They do not even move around. Instead sponges stay attached to an underwater rock or coral reef. For a long time people thought sponges were plants.

How are sponges used in the human body?

A sponge’s body is a soft mass of cells supported by a skeleton. Holes in a sponge’s skin let water flow inside. Sponges take food and oxygen from the water. Sponges are useful to people. People collect sponges and then dry, clean, and trim them. The fleshy parts are thrown away, and only the skeleton is used.

What did the ancient Greeks do with sponges?

Sponges are useful to people. People collect sponges and then dry, clean, and trim them. The fleshy parts are thrown away, and only the skeleton is used. The ancient Greeks and Romans used sponges to pad their war helmets and armor.