The highest level of scientific experiment is known as experimental, or randomized control. In this type, as the name implies, there is the greatest amount of control. There are at least two groups used in this type of scientific experiment. Each group is made up of subjects that resemble each other as close as possible, such as by age, gender, etc. Subjects can be human, animal or the environment.
Chemical changes can result from the combination of different substance through a reaction to give one or more different substances. Decomposition, the opposite of combination, involves the breakdown of a single substance into two or more different substances.
Answers: A chemical change produces one or more new chemical substances, while a physical change is one of appearance of phase, for instance. Combustion is a chemical change Condensation is a physical change Melting is a physical change.Question: answer p if the statement describes a physical property. Answer c if da statement describes a chemical property 1.Virgin coconut oil solidifies at 24 degree Celsius.2. Vinegar curdles milk 3. chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.