A) very far from one another
B) held in fixed positions
C) closely packed
D) unevenly distributed

A) having lost electrons owing to energy content
B) having definite shape and definite volume
C) having a definite volume but not a definite shape
D) having neither a definite shape nor a definite volum

A) atoms form molecules
B) atoms lose electrons
C) atomic nuclei break down
D) atoms gain electrons

A) The energy remains unchanged.
B) It is changed into matter
C) It changes form, but is neither destroyed nor increased
D) It is destroyed

A) vitamin C (ascorbic acid)
B) bread dough
C) seawater
D) vinegar (5% acetic acid)

A) a blend of any two or more kinds of matter, as long as each maintains its own unique properties
B) any group of elements that are chemically bonded to one another
C) a combination of pure substances bonded chemically
D) any substance with a uniform composition

A) heterogeneous
B) homogeneous
C) a compound.
D) chemically bonded

A) random list
B) element table
C) periodic chart
D) chemical chart

A) a gold ring
B) granite
C) salt water
D) sucrose

A) air
B) raw milk
C) orange juice
D) marble

A) rows of elements
B) periods
C) groups or families
D) actinides

A) a good electrical and heat conductor
B) easy to break down into its components
C) very hard
D) very brittle

A) lanthanides
B) semiconductors
C) from outer space
D) unreactive

A) brittle
B) used to make jewelry
C) malleable
D) a good conductor