b. compound source is Glencoe Science book grade 7. Also I just happening to be learning about this at school
A **compound ** is a substance in which all the exact **combinations **of **elements **are always the same . The correct option is **b. **
What is a compound?
**Compounds **are substances that are made up of two or more substances or elements. A compound is a mixture of two elements , they share bonds with each other, and they form a totally different **substance **than the above elements .
For example, **NaCl **is a compound . It is formed by two elements, sodium, and chloride . These elements form a different compound that is common table salt.
Some **compounds **are pure **substances **because they are made up of only elements that mix together. They do not contain any impurity or any other substance. They share chemical **bonds **with each other.
Thus, the correct option is b. compound.
To learn more about compounds , refer to the link:
https://brainly.com/question/14658388
#SPJ2
The correct answer is B. compound, as a compound is a substance made up of two or more elements that are chemically bonded together in a fixed ratio, ensuring consistency in its composition. Examples of compounds include water (H₂O) and sodium chloride (NaCl).
;