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Exam: TOEFL

oxidative

IPA: /ˈɒksɪdeɪtɪv/

KK: /ˈɑksɪˌdeɪtɪv/

adjective

Definition: Relating to or resulting from a chemical process where a substance combines with oxygen, often leading to a change in its properties.

Example: The oxidative process in the body helps to break down food for energy.

oxidatively

IPA: /ˌɒksɪˈdeɪtɪvli/

KK: /ɑkˈsɪdəˌtɪvli/

adverb

Definition: In a manner that involves or relates to the process of oxidation, which is a chemical reaction where a substance loses electrons.

Example: The compound reacts oxidatively, leading to the formation of new products.

oxide

IPA: /ˈɒksaɪd/

KK: /ˈɑksaɪd/

noun

Definition: A chemical compound that consists of oxygen combined with another element.

Example: Water is made up of hydrogen and oxygen, but rust is an example of an oxide formed from iron and oxygen.

oxidise

IPA: /ˈɒksɪdaɪz/

KK: /ˈɑksɪˌdaɪz/

verb

Definition: To combine with oxygen or to undergo a chemical reaction in which electrons are transferred, often resulting in a change in the substance's properties.

Example: Iron will oxidise if it is exposed to moisture and air for a long time.

oxidised

IPA: /ˈɒksɪdaɪzd/

KK: /ˈɑksɪˌdaɪzd/

adjective

Definition: Describes something that has undergone a chemical reaction with oxygen, often resulting in a change in color or composition.

Example: The metal has oxidised, giving it a rusty appearance.

verb

Definition: To have undergone a chemical reaction with oxygen, often resulting in a change in color or composition.

Example: The metal has oxidised, causing it to turn a reddish-brown color.

oxidiser

IPA: /ˈɒksɪdaɪzə/

KK: /ˈɑksɪˌdaɪzər/

noun

Definition: A substance that can cause or promote the combustion of another material by providing oxygen or another oxidizing agent.

Example: In the laboratory, we used an oxidiser to enhance the reaction between the chemicals.

oxidising

IPA: /ɒkˈsɪdaɪzɪŋ/

KK: /ɑkˈsɪdaɪzɪŋ/

adjective

Definition: Relating to a process that involves the addition of oxygen to a substance or the removal of hydrogen from it, often resulting in a chemical change.

Example: The oxidising agent in the reaction helped to convert the metal into its oxide form.

verb

Definition: To combine with oxygen or to cause a substance to combine with oxygen, often resulting in a change in chemical composition.

Example: The process of oxidising iron leads to the formation of rust.

oxidizable

IPA: /ˈɒksɪdaɪzəbl/

KK: /ˈɑksɪdaɪzəbl/

adjective

Definition: Able to undergo a chemical reaction where a substance combines with oxygen or loses electrons.

Example: Iron is oxidizable, which is why it rusts when exposed to moisture and air.

oxidize

IPA: /ˈɒksɪdaɪz/

KK: /ˈɑksɪˌdaɪz/

intransitive verb

Definition: To undergo a chemical reaction in which a substance combines with oxygen, often resulting in a change in its properties.

Example: Iron will oxidize when exposed to moisture and air, leading to rust.

transitive verb

Definition: To combine a substance with oxygen, often resulting in a chemical change.

Example: When iron is exposed to moisture, it can oxidize and form rust.

oxidized

IPA: /ˈɒksɪdaɪzd/

KK: /ˈɑksɪˌdaɪzd/

adjective

Definition: Describes something that has undergone a chemical reaction with oxygen, often resulting in a change in color or composition.

Example: The metal has oxidized, giving it a rusty appearance.

verb

Definition: To undergo a chemical reaction where a substance combines with oxygen, often resulting in a change in its properties.

Example: The metal has oxidized, causing it to turn a reddish color.

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