The correct answer is an addition reaction.
A reaction in which two or more reactants come together to produce a single product is called an addition reaction. The product will comprise all the atoms, which were there in the reactants. The addition reaction takes place with unsaturated compounds.
Hydrohalogenation is one of an example of the addition reaction, in which supplementation of a hydrogen atom and a halogen atom takes place with an unsaturated compound.
Physical change because it's only changing the shape of the gold.
PH is a scale of how much ionic hydrogen is in a substance. The scale runs from 0 to 14. The lower the number on the scale, the more acidic the substance is (that means there are more hydrogen ions than hydroxide ions). The higher the number on the scale, the more basic the substance is (that means that there are more hydroxide ions than hydrogen ions).
Answer:
B: Kilograms
Explanation:
Centimeters are used to measure length
Newtons are used to measure force
Kilograms measure weight or mass.