1. Atoms are mostly empty space
2. Atoms have a concentration of positive matter somewhere in them
3. The concentration of this positive matter is very small
Answer:
6
Explanation:
bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6
In this reaction the products have less potential energy than the reactants.
A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and the other consists of C and D.
The products are two molecules, one of which consists of A and C, and the other consists of B and D.
The energy of molecules AB and CD is higher than the energy of molecules AC and BD.
In this reaction heat has been released to the environmen.
A scheme of a chemical reaction. The reactants are two molecules, one of which consists of A and B, and the other consists of C and D.
The products are two molecules, one of which consists of A and C, and the other consists of B and D.
The energy of molecules AB and CD is higher than the energy of molecules AC and BD. CD is a product entropy has decreased the products have less potential energy than the reactants AC is a reactant the products have been rearranged to form reactants.
<h2>Answer:</h2>
The option B is correct option. Which is release of heat and/or light energy .
<h3>Explanation:</h3>
According to the definition of exothermic reaction :
<em>An exothermic reaction is a chemical reaction that releases energy by light or heat.</em>
From definition option B (release of heat and/or light energy) indicates that an exothermic reaction has taken place.
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