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Q: Which reactions are hotter than the reactants?
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What is the criteria in terms of temperature changes for exothermic and endothermic reactions?

Endothermic reactions draw heat from the reactants / products and the environment, so they tend to get cooler as the reaction proceeds. Exothermic reactions release heat to the reactants / products and the environment, so they tend to get hotter as the reaction proceeds.


What is an enderonic reaction?

I think you mean endergonic? Endergonic reactions are positive and its products are higher energy than its reactants. At equilibrium, reactants are favored.


Do endothermic reaction have reactants with more energy than its products?

Kinetic energy has more energy than products.


Is the total mass of all chemical reactions less than the total mass of the reactants?

yes!


Does chemical reactions make new materials called the reactants?

Hi there! Well, to answer your question, chemical reactions invlove two sets of substances: the reactants and the products. The reactants are the chemicals that are involved BEFORE the reactions occurs. The products are the chemicals that are formed as a result of the chemical reaction. In another words, the products are your end results. Therefore, chemicals reactions make new materials called the PRODUCTS, rather than reactants. For example in photosynthesis: Glucose + Oxygen -----> Carbon dioxide + Water Glucose and oxygen are your reactants, whereas carbon dioxide and water are your products.


What are the beginning reactions of a compound called?

Reactants


What are the reactants in the light reactions?

Light and Water.


What bsre the materials for chemical reactions?

materials used in chemical reactions are reactants


Chemical reactions occur because reactants are trying to become more?

Chemical reactions occur because reactants are trying to become energetically more stable


What are the reactants of light independent reactions in photosynthesis?

The reactants of light-dependent reactions in photosynthesis are H20 (water), ADP, and NADP+.


What are the reactions to a chemical reaction?

it is the reactants which give the product


What are the reactants of an enzyme-catalyzed reactions known as?

crayons :)