Answer: Option (C) is the correct answer.
Explanation:
Charged particles are the particles that contain either a positive or a negative charge.
For example, [tex]Na^{+}[/tex], [tex]Ca^{2+}[/tex], [tex]Cl^{-}[/tex], [tex]Al^{3+}[/tex] are all charged species.
When charged species flow from one point to another in a conducting material then the energy produced is known as electrical energy.
Whereas energy produced due to splitting or combining of two atomic nuclei is known as nuclear energy.
Chemical energy is the energy present within the bonds of a chemical compound or substance.
When an energy is produced due to the sum of potential and kinetic energy then it is known as mechanical energy.
Thus, we can conclude that electrical energy is the type of energy that is generated due to the movement of charged particles.
Which best describes the activation energy of a chemical reaction?
A. the combined energy of all the reactants
B. the amount of energy required for a reaction to occur
C. the difference in energy between products and reactants
D. the potential energy stored in the bonds of reactants and products
The answer is B as activation energy is the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.
Activation energy of a chemical reaction is the amount of energy required for a reaction to occur. Thus, option B is correct.
What is Activation energy?Different atoms, molecules, or compounds come together to form new compounds in a chemical reaction.Reactant molecules in the chemical reaction result in product molecules.‘The minimum amount of energy needed to initiate any chemical reaction is referred to as activation energy.This is due to the fact that all reactions, whether exothermic or endothermic, require some amount of energy to begin.In order to start the exothermic process, some activation energy is also required; eventually, this energy is released.The characteristics of the reactant and the presence of the catalyst can have an impact on activation energy.It’s expressed in KJ/mol.Thus, the minimum amount of energy called activation energy is required to initiate a chemical reaction.
To know more about activation energy, refer to the below link:
https://brainly.com/question/11334504
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Enzymes affect the reactions in living cells by changing the
Answer:
Here is the full sentence: Enzymes affect the reaction in living cells by changing the SPEED OF THE REACTION.
Explanation:
The options attached to the question are given below:
A. Products of the reaction
B. Speed of the reaction
C. Temperature of the reaction
D. pH of the reaction
Enzymes are chemical substances, that affect the rate of biochemical reactions by speeding up the rates at which the reactions occur. Enzymes are found in all living cells and they are formed mostly from proteins. Enzymes speed up the rate of biochemical reaction by lowering the activation energy of the reaction. Each enzymes catalyses only specific reactions and work best under specific conditions.
Enzymes change the activation energy required for biochemical reactions in cells, thereby controlling the rate at which these reactions occur. Specific environmental factors and the presence of cofactors or coenzymes can further regulate enzyme activity.
Enzymes affect reactions in living cells by altering activation energy, which is the energy required to initiate a chemical reaction. Enzymes are biological catalysts that increase the rate of biochemical reactions by lowering the activation energy, thus making it easier for the reaction to take place. These protein-based molecules are highly specific to their substrates and can aid in a variety of reactions including breakdown, rearrangement, or synthesis processes.
Furthermore, the activity of enzymes is influenced by environmental factors such as pH, temperature, and salt concentration. In some cases, enzymes require cofactors or coenzymes, which are non-protein molecules that assist in the catalytic process. The precise control of enzyme function in a cell ensures that metabolic reactions occur at the necessary rate for proper cellular function.