Chemistry

Scientists have long believed that oxidation is-...

• its acquisition

• substance

• the loss of phlogiston

• oxidizing agent

Who created the theory of oxygen combustion

• Johann Becher

• Avogadro Amedeo

• Svante Arrhenius

• Lavoisier

Redox reactions - reactions that change the oxidation state of elements.

• True

• False

What is the oxidation state?

In a simple substance, what degree does an element have?

• has a zero oxidation state

• has an oxidation state of +1

• does not have an oxidation state

• always has -1 oxidation state

Reactions in which the process of oxidation and reduction takes place simultaneously

• compound reactions

• decomposition reactions

• substitution reactions and exchange reactions

• no right answers

Oxidation is

• the process of transferring electrons from atoms, molecules, or ions.

• it is a method or means of altering one or more chemicals or chemical compounds in one way or another.

• transformation of one or more starting materials (reagents) into other substances

• chemical reaction, as a result of which several new substances are formed from one substance.

Oxidation is always accompanied by oxidation, reduction - reduction.

• True

• False

What do you think, is it possible to observe a ravine of reactions in nature? Give an example.

• Redox reactions are very common. They can be observed during fuel combustion, corrosion and metal melting.

• No, in nature, we will not be able to see redox reactions

Atoms or ions that add electrons in the reaction are oxidizing agents, and atoms or ions that donate electrons are reducing agents

• True

• False