3 properties of oxygen

Answer 1

Physical: - Gas at room temperature - Odourless, tasteless and colourless Chemical: - Element - Corrosive -slightly soluble in water -not soluble in reation with sodium hydroxide -relights glowing splinter -oxygen supports combustion -no effect on moist blue and red litmus papers -oxygen is neutral -no effect on lime water -no effect on hydrogen carbonate indicator

Answer 2

The Group 6A is the one where there are observed variations of properties of the elements.

For example, Polonium is a metal, tellurium is a metalloid and selenium, sulfur and oxygen are nonmetals.

Though, there are like properties, such as: all the elements form oxygen-compounds and sodium-compounds.

In the Group 6A the 2nd and 3rd period elements have different structures: oxygen has an allotrope (O3) and sulfur has many allotropes.

Sulfur, tellurium and selenium are also called chalcogens because they are found in copper ores (khalkos is the Greek name of copper).

Sulfur is also known as the "burning stone" and the sulfur compounds are smelling and poisonous. The well known H2SO4 is an important compound of sulfur.

Sulfur and selenium are important elements in human diet.

Answer 3

1. Oxygen is a colorless, odorless gas found in the Earth's atmosphere.
2. It is essential for respiration in most living organisms, serving as the final acceptor of electrons in the electron transport chain during cellular respiration.
3. Oxygen can form compounds with almost all other elements, such as water (H2O) and carbon dioxide (CO2).

Answer 4

gas at room temperature, odorless, colorless

Answer 5

You cant smell it, see it, taste it, or touch it.

Answer 6

#1 ; Odourless , tasteless, invisible gas at STP.

#2 ; Supports combustion, but does not burn of itself.

#3 ; Very reactive gas. ' Many metals etc., are oxidised by it.

Answer 7

It is made up of two oxygen atoms.