A compound is sometimes confused with amixture, but the two differ in important ways. In a mixture, substances are combined, but there's nochemical reactionor bonding like that found in compounds. The individual substances in a mixture retain their ownpropertiesand can be separated into their o...
a compound contains two or more types of atom joined together. a mixture contains two or more different substances that are not joined together. the different substances in a mixture can be elements or compounds. How do you use substance in a sentence? "She claimed that she was using a har...
Determine if the given compound acts as a Lewis base, a Bronsted-Lowry base, both, or neither. Classify the following substances as a Bronsted-Lowry acid, Bronsted-Lowry base, Lewis acid, and/or Lewis base. HCl, BF_3, CCl_3, -H CH_2O, ...
What are redox reactions? A. Reactions that release heat. B. Reactions where a single compound breaks down. C. Reactions that involve the transfer of electrons between substances. D. Reactions that occur when we clean our houses. 相关知识点: ...
is H2O. • Mixture- a combination of substances in which the atoms of the substances are not chemically combined. This means that mixtures can be separated. • Example 1- Sand because the pieces of sand can be separated. • Example 2- a toy box. Are these pure substances or ...
(b) How are properties of a compound related to elements that comprise it? Chemical Reactions: In a synthesis reaction, two or more substances called "reactants" combine to form a single "product" substance. In decomposition reactions, a sin...
PCDDs/PCDFs were one of the first groups of substances to be included in Annex C (undesirable byproducts) of the Stockholm Convention in 2001. In the European Union, they are listed in Annex III Part A of the EU POP Regulation (EU) 2019/1021 of the European P...
Another method of determining empirical formulas is to cause a compound to react with another substance and observe the products of the reaction. Scientists commonly use this method to analyze hydrocarbons, substances which contain only carbon and hydrogen atoms. They burn unknown hydrocarbons and colle...
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What are inorganic substances that are essential and serve in metabolic functions? a. vitamins b. minerals c. vitamins and minerals d. none of the above What are the compounds in the early Earth's atmosphere that would have been necessary for the creation of amino acids (like Miller-U...