Chemistry Quarter 1 Exam Review Flashcards
system of measurement primarily used in science
metric system
unit of time in metric system
seconds
the purpose of scientific notation
makes large numbers more manageable
REVIEW SECTION 1.3 for SIG FIG RULES
REVIEW METRIC PREFIXES (pg. 7)
what is matter?
anything that has mass and occupies space
four states of matter
solid
liquid
gas
plasma
smallest individual particle
atom
smallest individual part of a compound
molecule
cannot be broken down further chemically
element
KNOW ELEMENTS AND SYMBOLS (pg. 19)
homogenous mixture vs. heterogenous mixture
homogenous is all uniform in color
heterogenous has phases of color; not uniform
a homogenous mixture is also known as a
solution
atomic theory–
- every element consists of tiny, indivisible, indestructible particles called atoms (FALSE; atoms are destructible)
- all of the atoms of a particular element have the same size, mass, and chemical behavior (FALSE; atoms vary slightly in mass)
- differences in properties of elements result from differences in the atoms of the elements
- the atoms of the elements combined in a compound are combined in a definite ratio
- a chemical reaction is the result of rearrangement, combination, or separation of atoms
states that the ratios of the masses of each element in a given compound are always the same
law of definite composition