WGU D425 INTRODUCTION TO CHEMISTRY PA 107 QUESTIONS AND SOLUTIONS

WGU D425 INTRODUCTION TO CHEMISTRY PA
107 QUESTIONS AND SOLUTIONS


◉ proton.
Answer: positive particle in the nucleus.


◉ electron.
Answer: negative particle in an atom. Is found in the space
surrounding the nucleus of an atom


◉ neutron.
Answer: neutral particle in the nucleus


◉ element.
Answer: a substance containing only one type of atom. Egs.
Hydrogen, Helium, Lithium


◉ compound.
Answer: two or more elements chemically bonded. Will usually
result in physical ans chemical properties that are very different
from the elements from which they were formed

, ◉ ion.
Answer: a charged atom or compound


◉ ionic bond.
Answer: bond formed between ions of opposite charge.
Where the valance electron is transferred from one atom to another
resulting in a charged atom. (usually a metal and a non-metal)


◉ covalent bond.
Answer: bond that shares electrons (mostly between two non-
metals)


◉ positive charge ion.
Answer: atom with fewer electrons than protons


◉ negative charge ion.
Answer: atom with more electrons than protons


◉ solution.
Answer: mixture where one substance dissolves in another


◉ solvent.