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

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

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

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

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

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

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

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

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

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

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

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

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

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