Question

Read the dictionary entry.

compound n. 1. a combination of two or more ingredients or parts 2. a substance formed by
the chemical union of two or more elements 3. a word that consists either of two or more
elements that are independent words 4. a building or buildings set off by an enclosed barrier
Now read the sentences.
In science we are learning about certain compounds that are essential to life, like water. Each
water molecule is made up of two hydrogen atoms and one oxygen atom.
Which definition from the dictionary entry matches the meaning of compounds as it is used in the
sentences?
A. definition 1
B. definition 2
C. definition 3
D. definition 4

Answer 1

2.A substance formed by the chemical union of two or more elements

Step-by-step explanation:

The context clues say that water molecule is made up of TWO hydrogen atoms so that was a context clue.Then common sense is that it is science and that was the only definition that have something to do with science