Answer:
B
Explanation:
A chemical change occurred, and this caused the liquid’s physical properties to change.
when we read her experiment we can see that color changed to blue, it is because new products are formed. And the temperature cause this.
Answer: The total mass of reactants and products is the same during a chemical reaction.
Explanation:
the total mass of reactants is equal to the total mass of products.
The answer is Cl because its oxidation number goes from a +7 down to a -1.
<span>For each inherited character an organism has two alleles for the gene controlling that character.. one form each parent</span>
