endothermic

/,endou'θə:məl/ Cách viết khác : (endothermic) /,endou'θə:mik/

Thân thiện

An endothermic reaction occurs when ammonium nitrate dissolves in water, causing the beaker to feel cold.

Definition

1. Adjective:
   • (Chemistry) Absorbing heat: Describes a chemical reaction or process that takes in heat from its surroundings. The system gains thermal energy.
   • (Biology) Warm-blooded: Describes animals (endotherms) that maintain a constant, high body temperature primarily through internal metabolic processes, such as mammals and birds. Note: This meaning is more common in biology, while the chemistry definition is primary.

Usage

• The term endothermic is used to describe processes where energy enters a system as heat.
• In chemistry, it is the opposite of exothermic.
• In biology, it is the opposite of ectothermic (cold-blooded).

Examples

• Chemistry Context:
  • The melting of ice is an endothermic process because it requires heat from the environment.
  • The reaction between barium hydroxide and ammonium chloride is highly endothermic, causing the temperature to drop dramatically.
• Biology Context:
  • Humans are endothermic organisms, capable of regulating their own body temperature.
  • The endothermic nature of birds allows them to be active in cold climates.

Advanced Usage

• "Endothermic reaction": A specific chemical reaction that absorbs heat energy from its surroundings.
  • In an endothermic reaction, the products have more energy than the reactants.
• "Endothermic animal": An animal that generates heat internally to maintain its body temperature.
  • An endothermic animal has a higher metabolic rate than an ectotherm of similar size.

Variants and Related Words

• Endotherm (n): A warm-blooded animal.
  • Mammals and birds are classified as endotherms.
• Endothermically (adv): In an endothermic manner.
  • The compound decomposed endothermically.
• Endothermicity (n): The condition or property of being endothermic.
  • Scientists measured the endothermicity of the phase change.

Synonyms

• Heat-absorbing: (Chemistry) Taking in thermal energy.
• Endergonic: (A related but distinct term in thermodynamics, referring to a process that absorbs free energy, not necessarily as heat).
• Warm-blooded: (Biology) Maintaining a constant body temperature through internal means.

Antonyms

• Exothermic: (Chemistry) Releasing heat.
• Ectothermic: (Biology) Cold-blooded; relying on external environmental heat sources.

Học thuật

Adjective

1. (of a chemical reaction or compound) occurring or formed with absorption of heat

Từ đồng nghĩa

• endothermal
• heat-absorbing