CH 2 Chemical Context of Life Flashcards
1
Q
matter
A
anything that takes up space and has maa
2
Q
element
A
substance that cannot be broken down to other substances by chemical reactions
3
Q
compound
A
substance consisting of two or more different elements combined in a fixed ratio
4
Q
essential elements
A
required for an organism to live a healthy life and reproduce; oxygen, carbon, hydrogen, nitrogen, calcium, phosphorous, potassium, and sulfur.
5
Q
trace elements
A
required by an organism in minute quantities
