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

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

A) atoms form molecules
B) atoms gain electrons
C) atomic nuclei break down
D) atoms lose 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) vinegar (5% acetic acid)
C) seawater
D) bread dough

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

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

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

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

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

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

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

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

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