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Fichas por First Name, actualizado hace más de 1 año
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| Pregunta | Respuesta |
| What is the empirical formula | A formula that gives the simplest whole-number ratio of atoms in a compound. http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/chemcalc/chemcalc_higherrev2.shtml |
| What is a catalyst | a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. |
| What are endothermic reactions | An endothermic reaction describes a reaction in which the reactions absorb energy from its surroundings; usually, but not always, in the form of heat. |
| What are exothermic reactions | An exothermic reaction is a chemical reaction that releases energy by light or heat. |
| Would salt dissolving in water an Endo or Exo thermic reaction? | Its endothermic |
| How do you make hydrocloric acid? | You dissolve hydrogen chloride gas in water and then that makes hydrocloric acid |
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