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How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
A chemical reaction can be concisely represented by a chemical what?
A chemical reaction can be represented by a chemical equation.
What is relationship between active mass and rate of reaction?
The rate of a chemical reaction increase when the concentration of the reactants increase.
What do you call a short representation of a chemical reaction?
A short representation of a chemical reaction would be the net ionic equation.
How do concentrations affect rate according to the rate law?
The rate law describes the relationship between the concentration of reactants and the rate of a chemical reaction. Generally, an increase in the concentration of reactants will lead to a proportional increase in the reaction rate if the reaction is first order with respect to that reactant. For example, if the rate law is rate = k[A]^2, doubling the concentration of A would quadruple the reaction rate.
What temperature change do you think would be required to increase or decrease the reaction time by a factor of 2?
all chemical reaction has to be thought of to be there
How would you speed up a chemical reaction?
increase temperature use a catalyst increase concentration increase surface area of what you are reacting (crushing into a powder)
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
Would hair bleaching be a chemical reaction?
Bleaching is a chemical reaction.
What effect does changing the concentration on acid have in a chemical reaction invlving a metal such as magnesium?
Increasing the concentration of an acid would increase the rate and vigor of the reaction involving a metal such as magnesium.
What is new substance that is formed during a chemical reaction?
That would be the product of the chemical reaction.
What element would be expected to be more reactive than phosphorus?
Chlorine would be expected to be more reactive than phosphorus because it is higher in the periodic table and has a higher electronegativity, making it more likely to gain electrons in a chemical reaction.
What evidence of chemical reaction would be seen when burning a match?
Burning is a chemical reaction (oxidation).
A chemical reaction can be concisely represented by a chemical what?
A chemical reaction can be represented by a chemical equation.
What is relationship between active mass and rate of reaction?
The rate of a chemical reaction increase when the concentration of the reactants increase.
What do you call a short representation of a chemical reaction?
A short representation of a chemical reaction would be the net ionic equation.
Is sawing a log chemical reaction?
No, that would probably be considered a physical change. It is only a chemical reaction its chemical makeup is changed.
