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Does a chemical reaction always require energy to start?
Yes, every chemical reaction requires activation energy, though in some cases the ambient heat of room temperature is enough to provide that energy.
Which of the following is not required in a chemical reaction?
An enzyme is not required in a chemical reaction. While reactants, energy, and a chemical reaction pathway are essential components of a chemical reaction, enzymes can speed up the reaction but are not always necessary for it to occur.
What always results in a chemical reaction?
A chemical reaction always occurs when the bonds between atoms in one or more substances are broken or formed, leading to the creation of new substances with different chemical properties. This process involves the rearrangement of atoms and the release or absorption of energy.
Will the temperature in a reaction always go up?
Exo- means out Endo- means in. In an Exothermic reaction thermal energy is released (goes out) and in an Endothermic reaction Thermal energy is taken up, transferring into chemical energy (goes in). So, to answer your question, no, the temperature does not go up in both an exothermic and an endothermic reaction.
What substance is always made in a chemical reaction?
Reactants
Is boiling always a sign of a chemical reaction?
No, boiling is not always a sign of a chemical reaction.
Does a chemical reaction always require energy to start?
Yes, every chemical reaction requires activation energy, though in some cases the ambient heat of room temperature is enough to provide that energy.
Is burning of fuel in a cutting torch a chemical reaction?
Yes, burning of fuel is always a chemical reaction.
Which of the following is not required in a chemical reaction?
An enzyme is not required in a chemical reaction. While reactants, energy, and a chemical reaction pathway are essential components of a chemical reaction, enzymes can speed up the reaction but are not always necessary for it to occur.
What always results in a chemical reaction?
A chemical reaction always occurs when the bonds between atoms in one or more substances are broken or formed, leading to the creation of new substances with different chemical properties. This process involves the rearrangement of atoms and the release or absorption of energy.
Will the temperature in a reaction always go up?
Exo- means out Endo- means in. In an Exothermic reaction thermal energy is released (goes out) and in an Endothermic reaction Thermal energy is taken up, transferring into chemical energy (goes in). So, to answer your question, no, the temperature does not go up in both an exothermic and an endothermic reaction.
What substance is always made in a chemical reaction?
Reactants
There are several types of evidence that suggests a chemical reaction has occurred What always happens?
One key indicator that a chemical reaction has occurred is the formation of new substances with different properties than the original reactants. This change is irreversible, meaning the reactants cannot return to their original form once the reaction has taken place. Additionally, a chemical reaction often involves the absorption or release of energy in the form of heat or light.
What is always conserved in a chemical reaction?
In a chemical reaction, the total mass and the number of atoms of each element are always conserved. This is known as the law of conservation of mass.
Is the rate of a chemical reaction dependent of temperature?
In general, as temperature rises, so does reaction rate. This is because the rate of reaction is dependent on the collision of the reacting molecules or atoms. As temperature rises, molecules or atoms respond with increased motion, increasing the collision rate, thus increasing the reaction rate.
Are chemical reactions always spontaneous when H is negative and S is negative?
No, when H and S are both negative, the reaction will only be spontaneous below a certain temperature
Describe why the indicator reaction is pH dependent?
The indicator molecule changes its structure in response to the pH of the solution, leading to a change in color. This pH-dependent change occurs because indicators are weak acids or bases that undergo a reversible chemical reaction with H+ or OH- ions present in the solution, causing a shift in the equilibrium towards a different form with a different color.
