The right option is; A. Compounds can be separated by physical methods.
Compounds can be separated by physical methods is the statement about compounds that is false.
A compound is a molecule that is formed from the combination of two or more different chemical elements. The atoms of the different elements that form a compound are held together by chemical bonds (covalent and ionic) that are not easy to break. The component of a compound can only be separated by chemical means and not by physical methods. An example of a compound is water (H2O) which is composed of hydrogen (H) and oxygen (O) atoms.
Answer:
The interpretation including its set of circumstances is characterized throughout the explanation segment below.
Explanation:
- Lakes that always collect a significant amount of acid rain can also have water with either a pH value very low than 4. (the latter indicates that low pH levels are much more acidic versus significantly higher.)
- The world's oceans are covered from ocean acidification by limestone formations, which serves as a barrier to neutralize acid rain.
1. plants do not need and complex excretory organ because it creates a very small amount or nitrogenous waste.
Answer:
D)They ensure valid results.
Explanation:
- - <span>B) ribosome
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The ribosome contains enzymes that are associated with protein synthesis.