Question
A sample of acid and alkali reacts together. The temperature increases by 25℃. The nature of this reaction is:
- Reversible
- Irreversible
- Combination
- Exothermic
Hint:
Heat is given out which is why the temperature of the product increases.
The correct answer is: Exothermic
- As heat is given out it is an exothermic reaction.
- These reactions occur as soon as the components come into contact, releasing energy (heat). Examples include mixing the components of epoxy adhesives and hydrated cement. The term exotherm was first coined by French chemist Marcellin Berthelot in the 19th century.
Related Questions to study
Which of the following picture depict the exothermic reaction?
Which of the following picture depict the exothermic reaction?
Which of the following Reaction that gives out the energy to the surrounding?
Which of the following Reaction that gives out the energy to the surrounding?
In an exothermic reaction, energy of the product is_____ with respect to the energy of reactant.
In an exothermic reaction, energy of the product is_____ with respect to the energy of reactant.
The substance changes its shape, size, and color is one of the properties of physical change
A usually reversible change in the physical properties of a substance, as size or shape or colour is known as physical change.
The substance changes its shape, size, and color is one of the properties of physical change
A usually reversible change in the physical properties of a substance, as size or shape or colour is known as physical change.
The curdling of milk is where lumps are formed in the milk.
lumps are formed when milk curdles.
The curdling of milk is where lumps are formed in the milk.
lumps are formed when milk curdles.
burning is the example of irreversible change.
Curdling is the example of chemical change, in which milk forms lumps.
Rusting is the process where iron changes its colour to reddish brown colour.
Digestion is the change where the substance goes into the stomach and breaks down into simpler substances.
burning is the example of irreversible change.
Curdling is the example of chemical change, in which milk forms lumps.
Rusting is the process where iron changes its colour to reddish brown colour.
Digestion is the change where the substance goes into the stomach and breaks down into simpler substances.
Which of the following is not an example of chemical change?
chopping of vegetables is an example of physical change
Which of the following is not an example of chemical change?
chopping of vegetables is an example of physical change
The reaction in which one or more substances combine or change into one or more substances or a new substance is known as a
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.
The reaction in which one or more substances combine or change into one or more substances or a new substance is known as a
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.
Pick the odd one out:
it is an example of slow change while others are an example of fast change.
Pick the odd one out:
it is an example of slow change while others are an example of fast change.
Which of the following vegetables change their color when exposed to air?
Which of the following vegetables change their color when exposed to air?
Match the following:
Match the following:
The substance where no new substance is formed is called
physical change is where no new substance is formed.
The substance where no new substance is formed is called
physical change is where no new substance is formed.
In the chemical reaction, products are present on which side of the arrow?
in a chemical reaction the products are present on our right hand side.
In the chemical reaction, products are present on which side of the arrow?
in a chemical reaction the products are present on our right hand side.
In the chemical reaction, reactants are present on which side of the arrow?
in a reaction reactants are present on our left hand side.
In the chemical reaction, reactants are present on which side of the arrow?
in a reaction reactants are present on our left hand side.
Choose the correct option which suits the puzzle
Blowing is a fast change
Milk has lactic acid
Iron reacts with air to form rust
Reaction occurs when combining substances.
Choose the correct option which suits the puzzle
Blowing is a fast change
Milk has lactic acid
Iron reacts with air to form rust
Reaction occurs when combining substances.
