Saturday, January 30, 2010

Chemical Reactions - Predicting products

Describe the process(es)/method(s)/thought process to predict product(s) if reactant(s) are known.

21 comments:

  1. 1. Write down the cations and anions present in each of the reactants.
    2. Swap the ions to build the products.
    3. label the products as solid, liquid, or aqueous.
    4. State whether a reaction occurs
    5. Last, you balance the equation.

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  2. 1. Find the biggest subscript
    2. Find a number that all the other subscripts can be equal 2 evenly with out decimals.
    3. If there is oxygen do it last.
    4. Begin to guess and check.
    5. If it is difficult Dont Quit. Take a deep breath and Consetrate and Stick with it(the most important process)

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  3. *Mines is pretty much agreeing with Briana....

    1.jot down your data
    2.write down the anions & cations within the reactants
    3.develope the products & label them as aqueoous, liquid, or a solid
    4. Observe to determine whether there is a reaction occurance
    5.balance your equation

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  4. Denzel, you are talking about balancing equations where as my question is about predicting products in a chemical reaction.

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  5. Briana & Gloria, If you have a compound and an element or an element and element, how you can swap ions?

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  6. reactants - what you put into a reaction
    products - what you get out of it

    In every chemical reaction, there are participants known as reactants, which, by chemically reacting to one another, result in the creation of a product. A chemical reaction involves changes in the arrangement of atoms. If the reactant is a compound, the atoms in its molecules are rearranged. The atomic or molecular structure of the product is different from that of either reactant.

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  7. *after my research, my answer sort of relates to gloria's and briana's......

    -first step:observe and write down the cations and anions present
    -second step: switch the ions between the reactions to build the product
    -thrid step: label the products as a solid, liquid, or aqueous
    -fourth step:check and see if a reaction occurs
    -fifth step: balance the equation

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  8. I dont understand the question, are you asking us to name ways to predict products if you already know the reactants?

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  9. Ramoni, yes . The focus of the question is predicting products if reactants are known.

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  10. Cierra, did you see my response to Gloria & Briana?

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  11. Alexis Drake

    I really did not the the steps to doing this so after my research, the steps to predicting products are:
    1. Identify the cantions & anions in the reactants.
    2. Switch the ions.
    3. Label the products as either a solid, a liquid, and aqueous.
    4. Then balance the equation.

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  12. find the cations and aions
    swap ions
    identify the state of matter
    balance the equations

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  13. Okay I understand now. After some thought and research on this subject, I found that it is easy to think that the elements that are the reactants would be the same as the product, just rearranged in a different way. Although the law of conservation of mass states that matter is neither created nor destroyed, it never stated that it couldn't be changed or altered. So we must not forget that elements can combine to form whole new substances or compounds. The first thing that I would do in predicting the product of a chemical equation would be to look at each individual element. Is this element highly stable or highly reactive? If so, how many valence electrons does it need to loose or gain to stabilize itself? These are the questions you ask when swaping the anions and cations. A single displacement reaction is when one element leaves a compound and enters another. A double displacement reaction is when two compounds swap ions. These reactions are used when swaping ions between compounds or between an element and a compound. You must next label the products as solid, liquid, or aqeous. Finally, balance the equation.

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  14. first find the anions and the cations
    second switch the ions
    third find the state of matter
    finally balance the equation

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  15. 1. identify the anions and cations
    2.switch the ions
    3.label the product as either a liquid, solid, or aqueous
    4.balance the equation

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  16. first find what type of reactio will occur, then write the products according to the reaction. for e.g. if synthesis reation is to occur then you know that the product should be one substance.

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  17. The first step of this process is finding the cations and anions which helps you determine if the reactants are positive or negative. Finding what type of reaction it is helps you with the next step, switching the ions. Then, you find the state of matter which means to recognize the product as a solid or liquid. You now balance the equation.

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  18. Well first, you have to identify its anions amd cations. Then switch the ions so it would be the opposite. Then find the state of matter which means solid liquid or gas. Then balance the equations.

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  19. if reactants are known then the product should be calculated through a chemical equation and can calculate what type of reaction it is/

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  20. I believe you will first try and figure out what reaction is occuring such as synthesis, combustion, double/single replacement, or decomposition. The seconde thing you will do is look at what reaction you believe it will be and figure out how that reaction`s product will then look. The next step would be to calculate the chemical equation.

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  21. First you must write down all of your information, then you write down the cations and anions present in each on the reactant side. The next step is to switch the ions. correctly label your products with either solid(S) liquid(L) or aqueous(aq), then balance the equation.

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