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What evidence shows that a chemical reaction has taken place when you burn coal?
Wiki User
∙ 13y ago
when you burn coal, it burns thecoal and the oxygen in the air and forms carbon dioxide.
carbon + oxygen -> carbon dioxide
Wiki User
∙ 13y ago
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What chemical equation shows that no atoms are lost during a chemical reaction?
This is a balanced chemical reaction.
Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
What is the importance of coefficients in a balanced chemical equation?
Coefficients are imortant in a balanced chemical reaction, because it shows you how much of that chemical is reactanting, and also how much is being produce to form the products.
What is the chemical equation that shows the reaction between sodium and chlorine?
2Na+C12 -> 2NaCl
What reaction shows one element taking the place of another in a compound?
A single-replacement reaction
What shows changes that take place during a chemical reaction?
A chemical equation
What is meant of '. ' in chemical reaction?
'.' shows the multiplication in chemical reaction.
What chemical equation shows that no atoms are lost during a chemical reaction?
This is a balanced chemical reaction.
What shows the relationship between the reactants and products in a chemical reaction?
the coefficients of a balanced reaction
What shows in reaction that chemical change has take place?
a reaction has taken place when one or more of the following occur : - a new substance is formed - change in colour - precipitate is formed
What tells the story of a chemical reaction?
The written statement that shows a chemical reaction is called an "equation". The representation of each reactant is called its chemical formula.
How does a chemical equation show that a chemical reaction has occurred?
A chemical equation shows that chemical reaction has occurred as new substances have been formed from the reagents. A chemical equation has two sides before reaction and after reaction, if there is any change from the before reaction side to the after reaction side, it indicates that a chemical reaction has just occurred.
Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
What info does a chemical equation provide?
A chemical equation shows a reaction between to chemicals using chemical formulas.
What is the importance of coefficients in a balanced chemical equation?
Coefficients are imortant in a balanced chemical reaction, because it shows you how much of that chemical is reactanting, and also how much is being produce to form the products.
What are the five observations of chemistry that shows that a chemical reaction have taken place?
Formation of a precipitate; change in color; change in temperature; formation of a gas; emission of light.
What kind of reaction shows two reactants combining to form one new profuct?
combination reaction
