Chapter 2 Flashcards
1
Q
Trace elements
A
Small quantity of 25 essential elements needed for growth development and health
Eg: Fe, Cu, Mn,Ca
2
Q
Compound
A
A substance consisting of 2 or more different elements
Eg: NaCl
3
Q
Atoms
A
Small units of matters that makeup everyday Objects eg: sodium
4
Q
Elements
A
Chemical substances composed of atoms that cannot be broken down by normal chemical means