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Reinforcement: Chemical Changes
Directions: Use the equations below to answer the following questions.
[tex]\[ \text{Zn (s) + S (s) } \rightarrow \text{ZnS (s)} \][/tex]
1. What are the reactants in this chemical reaction?
The reactants in this chemical reaction are Zinc ([tex]\(\text{Zn (s)}\)[/tex]) and Sulfur ([tex]\(\text{S (s)}\)[/tex]).
2. What is the product?
The product of this chemical reaction is Zinc Sulfide ([tex]\(\text{ZnS (s)}\)[/tex]).
3. What is the physical state of both the reactants and the product?
The physical states in this reaction are as follows:
- Both reactants (Zinc and Sulfur) are in the solid state.
- The product (Zinc Sulfide) is also in the solid state.
4. According to the law of conservation of mass, if the total mass of the product in this chemical reaction is 14 g, what must the combined masses of the reactants be?
According to the law of conservation of mass, the total mass of the reactants must equal the total mass of the products. This means if the total mass of the product, Zinc Sulfide ([tex]\(\text{ZnS (s)}\)[/tex]), is 14 grams, then the combined total mass of the reactants (Zinc ([tex]\(\text{Zn (s)}\)[/tex]) and Sulfur ([tex]\(\text{S (s)}\)[/tex]) must also be 14 grams.
So, the combined masses of the reactants must be 14 grams.
