Chemical reactions involve mostly mass. This observation was made by the French chemist Lavasiour who was a royal tax collector and amateur chemist. Matter can neither be created nor destroyed. Atoms rearrange themselves in chemical reactions, but are not created or destroyed.Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. Coauthor of Chemistry & Chemical Reactivity and Saunders Interactive General Chemistry...These chemical reactions are the basis of what we would consider to be life. Copying our DNA and manufacturing new organelles and cell walls so the cells can This abomination of nitrogen chemistry is the ultimate expression of the particular brand of lunacy that goes hand in hand with working with...This means a chemical reaction is? [am-1]. ? reversible. ? exothermic. ? endothermic. ? decomposition. A reaction which gives out heat to the The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-10].The statement that is true for most chemical reactions is that A. An energy change occurs during the breaking and forming of chemical bonds. As the reactants react ultimately producing products the atoms of the respective elements within the compounds if present will break and reform ultimately to...
chemical reaction | Definition, Equations, Examples... | Britannica
1. Which of the following statements is true concerning human blood? a). The blood of all normal humans contains red and white cells, platelets, and plasma. Which of the following statements is true of antigen-antibody interactions? a). They are used by our bodies only to identify blood types.Chemical engineers design processes to ensure the most economical operation. A chemical engineer can both simplify and complicate "showcase" reactions for an economic advantage. 2. Read the text and be ready to say if the following statements are true or false.Problem 141 Medium Difficulty. Which statement is true of an endothermic reaction? a. Strong bonds break and weak bonds form. b. Weak bonds break and strong bonds form. c. The bonds that break and those that form are of approximately the same strength.Which statement is true of the Insert Analysis dialog box ? C. Use the 'General' tab to add the instrument code. 21. Which of the following can be sent 22. Is the following statement true or false ? Thomson Reuters Messenger is NOT able to contact AOL, MSN and Yahoo Instant Messenger users.
On average, how many chemical reactions happen in the... - Quora
Which statement is false? (a) The density of a gas is constant as long as its temperature remains constant. (b) Gases can be expanded without limit. A container with volume 71.9 mL contains water vapor at a pressure of 10.4 atm and a temperature of 465oC. How many grams of the gas are in the...3) Which of the following statements is FALSE? A) Carbon, hydrogen, oxygen, and nitrogen are the most abundant elements of living matter. Therefore, which of the following can be true? However, the average atomic mass of carbon found on a periodic table is slightly more than 12 daltons.Which statement about a chemical reaction is true? It is a reactant in a chemical reaction.It provides the energy needed for the reaction.It is not consumed by the reaction.It is a product of a chemical reaction. What's the most outdated thing you still use today?A chemical reaction is a transformation of some substances into one or more different substances.[12] The basis of such a chemical transformation is the However, this definition only works well for substances that are composed of molecules, which is not true of many substances (see below).Dummies helps everyone be more knowledgeable and confident in applying what they know. Whether it's to pass that big test, qualify for that big promotion or even master that cooking technique; people who rely on dummies, rely on it to learn the critical skills and relevant information necessary for success.
a. The mass of the reactants is at all times more than the mass of the goods.
b. The mass of the goods is all the time greater than the mass of the reactants.
c. There is no relationship between the mass of the reactants and products.
d. The mass of the reactants equals the mass of the products.
a lil help plz >.<
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