Card Set Information
Anything that has weight and takes up space? It is also composed of elements.
This is the study of composition of substances and how they change?
The study of chemistry in living things is?
The fundamental substances which comprise all matter and composed of atoms is?
What are chemical combinations of elements?
These are elements needed by the body in large amounts?
These are elements needed by the body in small amounts and used for parts of enzymes?
These elements are needed by the body in very small amounts and are toxic in large amounts?
Smallest particle of an element that has properties of that element is?
When atoms combine with atoms like themselves or with other atoms by forcing attractions, it is called?
The central portion of an atom and has no weight? It also contains protons and usually neutrons.
These are located circling around the nucleus and carries a negative charge?
These are located in the central portion of an atom and carries a positive charge?
These are located in the central portion of an atom and are electrically neutral?
The number of protons in the atoms of a particular element are known as what?
This is the number of protons added to the number of neutrons in each of an elements atom?
These are atoms with the same atomic number but different atomic weight? (Different # of neutrons).