Because this reaction is endothermic, this is the so-called cold pack chemical reaction.
(1) Interaction between phosphate and calcium: It is very inappropriate to use milk with hamburgers or sandwiches. Because milk contains white and a lot of calcium, while lean meat contains phosphorus, these two nutrients cannot be absorbed at the same time, which is medically called phosphorus and calcium.
(2) Oxalic acid and calcium phase grams: Tofu should not be eaten with spinach, because spinach contains more oxalic acid, which is easy to combine with calcium in tofu to form insoluble calcium salt, which the human body cannot absorb. For example, foods rich in calcium such as kelp and Nostoc flagelliforme should not be eaten equally with cauliflower and thick-skinned vegetables, because the latter contains more oxalic acid, and the absorption rate of calcium is greatly reduced after the two are mixed.
Extended data:
In the reaction, it is often accompanied by luminescence, fever, discoloration and precipitation. The basis for judging whether a reaction is a chemical reaction is whether the reaction produces new substances. According to the chemical bond theory, whether it is a chemical reaction can be judged according to whether there are old bonds breaking and new bonds forming during a change.
Redox reaction between the same elements with different valence states in a substance. That is to say, the valence state of the same element changes from high price and low price before the reaction to middle price after the reaction. In chemical reactions, there is a rule that the valence States of elements change: they can only be close together and cannot cross. Therefore, the level of factor prices can only move closer to the middle.
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