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What in A change in means that a chemical reaction has occurred?
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What is a precipitate and how does it help recognize that a chemical reaction has occurred?
Because there is a new substence being produced which means there must be a state change in the original solution.
Explain what a chemical change is?
a chemical change is a change which brings about a change in the chemical properties of a substance which cannot be reversed through physical means like heating or cooling.
What is released by an exothermic reaction?
what is released during a chemical reaction is ENERGY.
What is a change which means the products can't be returned back to the reactants?
The Change That Means Products And Cannot Be Returned Back To A Reactant Is A Chemical Change.
What does the term chemical reaction mean?
chemical reaction means breaking of chemical bond present in the molecules of the reactants to form new chemical bonds to give the products is called chemical reaction.
What is a precipitate and how does it help recognize that a chemical reaction has occurred?
Because there is a new substence being produced which means there must be a state change in the original solution.
Explain what a chemical change is?
a chemical change is a change which brings about a change in the chemical properties of a substance which cannot be reversed through physical means like heating or cooling.
What is chemical reaction in baking a cake?
A cake produces a permanant colour change and a slight change in weight after baking. That means, It's a chemical reaction.
Why atomic number not change during a chemical reaction?
chemical reactions are involved by the participation of electrons only.During chemical reaction number of protans remains as it is. No change in number of protans.Number of protans is also called atomic number.So no change in number of protans means no change in atomic number. That's why atomic number is not change during a chemical reaction.
Reaction of copper and heat is physical change or chemical change?
If it is just heated, the reaction is physical. If there is burning in the process, than the state of the copper will change, making it a chemical reaction.
What is released by an exothermic reaction?
what is released during a chemical reaction is ENERGY.
What does fizzing mean in a chemical reaction?
It is a sign that a chemical change is taking place, rather than a physical change.
Is sodium hydroxide dissolve in water a chemical change?
Yes, it's an exothermic reaction, which means that energy is being released, thus it is a chemical reaction.
What does the term chemical reaction mean?
chemical reaction means breaking of chemical bond present in the molecules of the reactants to form new chemical bonds to give the products is called chemical reaction.
What is a change which means the products can't be returned back to the reactants?
The Change That Means Products And Cannot Be Returned Back To A Reactant Is A Chemical Change.
Is the melting of plastic a chemical reation?
No, the melting of plastic is not a chemical reaction. This is because there is just a temperature change, which happens to change solid to liquid. The solid remains the same element with the same properties, and no "new substance" is formed.
How can people tell the chemical reaction in a beaker?
Mostly by means of colour change and heat dissipated from the beaker...
