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Is it correct to say that only one observable change accompanies a chemical reaction?
Wiki User
∙ 9y ago
No.
Some indicators of a chemical reaction are:
- change of color
- change of odor
- release of a gas
- change of the temperature
- change of the viscosity
- formation of a precipitate
- change of general appearance
- possible explosion
- possible chemiluminescence -formation of new compounds
Wiki User
∙ 9y ago
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Lithium nitride has the chemical formula Li3N.?
Yes - that is correct.
When matter changes states a physical change occurs what is needed to make this change happen?
When a chemical reaction takes place, usually burning and fizzing are seen.
What are reactants in science?
In a chemical reaction that proceeds to completion, there will be reactants and products at any time during the reaction. Reactants are the substances that react to produce products. This occurs through collisions that happen on the microscopic level. Two reactant particles cannot react unless they collide with the correct orientation and sufficient energy to form an activated complex, which is the intermediate molecule between reactants and products.
What is the correct name for the precipitate formed when mixing potassium carbonate and nickel(II) chloride?
silver chloride AgNO3(aq) + KCl(aq) --> AgCl(s) + KNO3(aq)
If 3 moles of a compound use 12 J of energy in a reaction what is the H reaction in kJmol?
12 J/3 moles = 4 J/mole. Thus, H of reaction in kJ/mole = 0.004 kJ/mole
What is a correct description of enthalpy of a reaction?
The enthalpy of a chemical reaction is the change of heat during this reaction.
What is a correct description of the enthalpy of reaction?
The enthalpy of a chemical reaction is the change of heat during this reaction.
Does this phrase was observable use correct grammar?
The detective positioned himself in the shadows of some bushes, from where the suspect was observable.
Is the reactivity of copper with oxygen considered a chemical or physical property?
The correct spelling is "reaction of copper with...' 1. Chemical reactivity is a chemical property. 2. A chemical reaction involve a chemical change.
Do emzymes increase the rate of chemical reaction they affect?
That is precisely correct.
Do catalyst speed up a chemical reaction but not changed by them?
Yes, that is correct.
What is the difference between reatants and productsin a chemical reation?
The difference is reactants are material used before the chemical reaction. And products are the new substances created as a result of the chemical reaction. Correct me if im wrong... but im almost positive this is correct
Is cleaning a penny with vinegar and salt a physical or chemical change?
It is a chemical reaction and this is the correct way to spell penny!
HCl(g) NH3(g)--- NH4Cl(s)?
Yes, this is a correct chemical reaction.
Is it true that Enzymes are not consumed during a chemical reaction?
Correct. Enzymes help to speed up chemical reactions. They may speed them up, costing them some energy, but they are never used up.
What statement that is a correct expression of the law of conservation of mass?
In a chemical reaction or physical reaction, matter is neither created nor destroyed.
How does a chemical reaction the way atoms are arranged?
chemical bonds.
