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What must happen to reactant particles for a reaction to take place?
Wiki User
∙ 11y ago
In order for two molecules to react they must:
1) Have sufficient energy to overcome whatever kinetic barrier exists to form a product in a realistic time period. We call this the activation energy.
2) Form a product which is at a lower total energy state than the two initial molecules.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoThe chemical bonds between the atoms making up the reactants must be broken and the atoms must be rearranged in order to form new products in the chemical reaction.
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What are 4 things that can affect the rate of a reaction?
1. Temperature: Depending on the temperature of the reactants, the reaction rate will differ. The higher the temperature (or the hotter the reactant is), the quicker the reaction will occur. The cooler the reactant is, the longer it will take for a reaction to take place. The heat causes the particles to move quickly, and due to the Collision Theory, which states that in order for a reaction to occur, molecules must collide, the particles will be more likely to bump into each other, and so the reaction will occur faster.2. Concentration: The higher the concentration of a reactant, the quicker the reaction will occur. This means that there are more particles of that particular substance, meaning it will collide more frequently into the particles of the other reactant. This increases the reactant rate because the more concentrated a reactant is, it means that the less space there is between the two reactants.3. Surface Area: Basically, the more particles that are exposed during the experiment, the faster the reaction will occur. The more the particles are exposed, the faster it is for the other reactant to collide into the particles, meaning the reaction rate will increase.4. Catalysts: Catalysts are substances that increase the rate of reaction by speeding up the reaction without being used up in the reaction. It does not affect the reactants in any other way than making them collide into each other more frequently, and it doesn't affect the product (or products) produced
True or False chemical reaction occurs at the same rate no matter what size of the reactant particles?
False! Not all chemical reactions take place at the same rate.
Why are carbon monoxide better reducing agent than carbon?
Carbon monoxide is a gas so will fill the container the reaction is taking place in so it will be moving around and will come into contact with more reactant. Carbon is a solid so will not be moving around and will come into contact with less reactant particles.
Describe the collision theory in relation to reaction rate?
When you have a higher concentration of elements in the reaction you are no matter what speed going to have a faster reaction taking place however the lower the concentration it is the more time it will take for the reaction to take place this process is similar to pressure as it reflects how the more of it there is the faster the reaction will be and how if there is less of it the slower the reaction will be. (related to the Collision Theory)
What would increase the concentration of reactants?
It means that there will be more particles of the reactants in the vessel, so they are more crowded and collisions of the right energy are more likely. or collisions of the right energy are more likely.
What is the name for the chemical that takes place in a reaction?
reactant
What are 4 things that can affect the rate of a reaction?
1. Temperature: Depending on the temperature of the reactants, the reaction rate will differ. The higher the temperature (or the hotter the reactant is), the quicker the reaction will occur. The cooler the reactant is, the longer it will take for a reaction to take place. The heat causes the particles to move quickly, and due to the Collision Theory, which states that in order for a reaction to occur, molecules must collide, the particles will be more likely to bump into each other, and so the reaction will occur faster.2. Concentration: The higher the concentration of a reactant, the quicker the reaction will occur. This means that there are more particles of that particular substance, meaning it will collide more frequently into the particles of the other reactant. This increases the reactant rate because the more concentrated a reactant is, it means that the less space there is between the two reactants.3. Surface Area: Basically, the more particles that are exposed during the experiment, the faster the reaction will occur. The more the particles are exposed, the faster it is for the other reactant to collide into the particles, meaning the reaction rate will increase.4. Catalysts: Catalysts are substances that increase the rate of reaction by speeding up the reaction without being used up in the reaction. It does not affect the reactants in any other way than making them collide into each other more frequently, and it doesn't affect the product (or products) produced
True or False chemical reaction occurs at the same rate no matter what size of the reactant particles?
False! Not all chemical reactions take place at the same rate.
What is one of of the original substances before a chemical reaction takes place?
a reactant
Did a chemical reaction take place if a reactant is smaller?
Yes. If Concentration of a reactant has decreased, that means that that concentration was used in the formation of a product.
Why are carbon monoxide better reducing agent than carbon?
Carbon monoxide is a gas so will fill the container the reaction is taking place in so it will be moving around and will come into contact with more reactant. Carbon is a solid so will not be moving around and will come into contact with less reactant particles.
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is a Exothermic b Reactant c Balanced d Endothermic?
If thermal energy must be added to a chemical reaction for the reaction to take place the reaction is endothermic.
Is this sentence true inceasing the surface area of a reactant exposes more of it to the reaction taking place?
true
Describe the collision theory in relation to reaction rate?
When you have a higher concentration of elements in the reaction you are no matter what speed going to have a faster reaction taking place however the lower the concentration it is the more time it will take for the reaction to take place this process is similar to pressure as it reflects how the more of it there is the faster the reaction will be and how if there is less of it the slower the reaction will be. (related to the Collision Theory)
What would increase the concentration of reactants?
It means that there will be more particles of the reactants in the vessel, so they are more crowded and collisions of the right energy are more likely. or collisions of the right energy are more likely.
Why do faster moving particles increase the rate of reaction?
The particles need to come in contact for the reaction to take place, normally. If the particles move at faster rate, they are more likely to come in contact with each other. That makes the reaction to take place faster.
What happens in a single-replacement reaction-?
One element takes the place of another in a compound.
