SCIENCE
PHYSICAL SCIENCES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
physical combination.
|
|
chemical combination.
|
|
distillation.
|
|
filtration.
|
Detailed explanation-1: -A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compounds are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons.
Detailed explanation-2: -A compound is formed by chemical combination of two or more elements.
Detailed explanation-3: -In chemistry, a compound is a substance made up of two or more different chemical elements combined in a fixed ratio. When the elements come together, they react with each other and form chemical bonds that are difficult to break. These bonds form as a result of sharing or exchanging electrons between atoms.
Detailed explanation-4: -A compound is a substance that contains two or more elements chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds. One of the simplest is called methane, in which there are always four times as many hydrogen atoms as carbon atoms.
Detailed explanation-5: -A chemical compound is formed when two separate elements are chemically combined-that is, chemical bonds develop between their atoms. The majority of elements on Earth create chemical compounds with other elements, such as sodium (Na) plus chloride (Cl), which combine to form table salt (NaCl).