Answer: The correct option is b.
Explanation: Chemical reaction is a reaction i which the chemical composition of the reactants gets changed and new substances having different chemical composition is formed. This reaction cannot be reversed by any physical means.
Indicators showing chemical changes are :
- Color change
- Characteristic odor
- Formation of bubbles
- Formation of precipitate
From the given information above, it can be stated that the correct option is b.
Answer:
The answer is C, both krypton and neon.
Explanation:
I got the answer wrong and my teacher told me that c is the right answer choice
Answer:
You can see that it is an endothermic reaction or heat is being absorbed for the change from magnesium to magnesium oxide. So it is an endothermic reaction. So these are the four reasons why we can say that burning of magnesium ribbon in the air is considered a chemical change.
Explanation:
hope it help
Answer: 
Explanation:
To calculate the moles, we use the equation:
Given mass of theobromine 
= 0.064 g
Molar mass of theobromine 
Answer:
<h3>Yeah, <em><u>Benzene have isomers.</u></em></h3>
