Chapter 1 test questions Flashcards
The knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
Science
The study of
-the composition, structure, and properties of matter
-the processes that matter undergoes
-the energy changes that accompany these processes
Chemistry
Study of most carbon containing compounds
(excludes oxides and carbonates)
Organic Chem
Study of non-organic substances that do not have carbon
(includes oxides and carbonates)
Inorganic Chem
Any substances that has a definite composition
Chemical
Often accidental discoveries
Basic research
Helps solve everyday problems
-Solves a specific problem-
Applied research
Anything that has mass and takes up space
Matter
The smallest amount unit of an element that maintains the chemical identity of that element
atom
substances that enter into a chemical change
reactant
Substances that are formed by a chemical change
product
A blend of two or more kinds of matter, each of which retains its own identity
mixture
Horizontal rows of elements in the periodic table
period
vertical columns of the periodic table
groups
electrons on the outermost energy level of an atom.
valence electrons
What is the state change?
Solid to gas
sublimation
What is the state change?
gas to solid
deposition
Endo or Exothermic?
Lower energy state to higher energy state (products have more energy)
Endothermic
Endo or Exothermic?
Higher energy state to lower energy state (products have less energy)
Exothermic
Which variable is directly manipulated during an experience
Independent variable