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What is the evidence that a chemical reaction took place when zinc mixed with HCl?
Laangyans
Yes, and zinc chloride and hydrogen are obtained.
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∙ 11y ago
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∙ 14y agoA soild would be formed
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What is the evidence that a chemical reaction took place when silver nitrate was mixed with ammonium chloride?
A white precipitate of silver chloride (AgCl) is formed.
If you are trying to decide whether a chemical reaction does or does not take place when two substances are mixed what kind of evidence will you look for?
change of state change of colour fizzing/gas bubbles
What evidence was there that a chemical reaction was taking place in the decomposition of hydrogen peroxide?
The decomposition of H2O2 is exothermic and oxygen is released.
What evidence do you have that a chemical reaction took place?
changes in its appearance ie colour and state
How can you be sure that at least one chemical change has occurred?
Evidence that a chemical reaction has taken place usually include appearance of a precipitate, change in color, or production of a gas.
What changes gives NO evidence that a chemical reaction has taken place?
Physical changes give no evidence that a chemical reaction has taken place, because no chemical reaction has taken place.
What is the evidence that a chemical reaction took place when silver nitrate was mixed with ammonium chloride?
A white precipitate of silver chloride (AgCl) is formed.
What evidence is there to show that a chemical reaction has taken place when an egg is cooked?
The change in color indicates that a chemical reaction has taken place.
When baking soda is mixed with vinegar which type of reaction has taken place?
its a chemical reaction
Is cement recyclable?
No, cement is not recyclable.Because when it is mixed with water chemical reaction takes place and gains strength and hardens.The hardened cement cannot be used as a recycled one because no chemical reaction takes place when mixed with water.
What evidence that a chemical reaction has taken place would a living thing show?
work
Which is indicated if a gas forms when two or more substances are mixed?
a chemical reaction has taken place.
If you are trying to decide whether a chemical reaction does or does not take place when two substances are mixed what kind of evidence will you look for?
change of state change of colour fizzing/gas bubbles
What evidence was there that a chemical reaction was taking place in the decomposition of hydrogen peroxide?
The decomposition of H2O2 is exothermic and oxygen is released.
What evidence do you have that a chemical reaction took place?
changes in its appearance ie colour and state
When two substances are mixed together a chemical reaction may take place What characteristics indicates a high chemical reactivity for one or more of the reagents?
la tuya
When two substances are mixed together a chemical reaction may take place Which what characteristics indicates a high chemical reactivity for one or more of the reagents?
all of these studyisland answer
