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Which of the following is a definite indicator that a chemical change has occured?
Wiki User
∙ 12y ago
Definite indicators of a chemical reaction include exothermic reactions (heat), colour change, bubbles and there might be a few more
a new substance forms (study island)
Wiki User
∙ 12y ago
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How does the chemical equation show that a chemical reaction has occured?
A compund
What are three clues that a chemical change has occured?
Three clues that a chemical change has occurred:Color changesa precipitate formsa gas forms
What can be evidence of a chemical reaction?
Generally, you know a chemical reaction has occured if there is a change in temperature, a change in color, a formation of a gas (bubbles), or any kind of flame.
When two white compounds are mixed in a solution a yellow solid forms What kind of reation has taken place?
A chemical reaction, because when the two substances were combined a color change and a precipitate formation both occured.
What is indicated when a flaming splint causes a pop?
This means that in the chemical reaction that occured, hydrogen (H2) gas was produced. The splint will make the popping noise because literally there is a small explosion occuring, and water vapor will form.
How does the chemical equation show that a chemical reaction has occured?
A compund
When substances are different from the starting substances what occured?
This is a chemical reaction.
When a substance changes into a difference substance a what change has occured?
chemical change
Does oxygen should have existed for the chemical evolution of life on earth to have occured?
its oxygen
When the US entered the war and why?
which of the following occured after the U.S. enterd the war?
Which of the following was an economic change that occured following World War 2?
wealth was redistributed across the united states
What happens in a can of spoiled food as gas is produced?
A chemical reaction of food decomposition occured.
When a metal changes color because it has reacted with another substance and what change occured?
Chemical
What are three clues that a chemical change has occured?
Three clues that a chemical change has occurred:Color changesa precipitate formsa gas forms
Why is iodine called an idicator?
Iodine is called an indicator because when iodine is in a substance that was sprayed it indicates that diffusion has occured by the smell spreading in the room.
If you put water in a freezer and it turns to ice what kind of change occured to the water?
A chemical change occurred
When iron is heated until it turns red the color change shows that a chemical change has occured?
False.
