Question
__________ is the chemical process in which substance combines with oxygen to gives off heat.
- Cooling
- Decomposition
- Condensation
- Combustion
Hint:
Burning of a substance causes combustion
The correct answer is: Combustion
- Combustion is a chemical process in which substances react rapidly with oxygen and release heat.
- The original substance is called fuel and the source of oxygen is called oxidant.
- The rate or rate at which reactants combine is partly due to the nature of the chemical reaction itself and partly because more energy is produced than can escape to the surrounding medium, so they are Used to raise the temperature. further, accelerate the reaction.
Related Questions to study
In the endothermic reaction temperature of surrounding keeps _______.
In the endothermic reaction temperature of surrounding keeps _______.
A sample of acid and alkali reacts together. The temperature increases by 25℃. The nature of this reaction is:
A sample of acid and alkali reacts together. The temperature increases by 25℃. The nature of this reaction is:
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.
