C-NEO
Why is an element considered a pure substance?
3

Pure substances are either elements or compounds. Elements can NOT be separated into other types of matter (physically or chemically). Therefore, elements are pure substances. Ex: Hydrogen gas is a pure substance, as it is made up of only Hydrogen atoms or molecules.

An element is considered a pure substance because it is made up of only one type of atom and cannot be broken down into a simpler form.

Explanation:

all answers true and false

explanation:

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint