A) held in fixed positions B) very far from one another C) unevenly distributed D) closely packed
A) having neither a definite shape nor a definite volum B) having definite shape and definite volume C) having lost electrons owing to energy content D) having a definite volume but not a definite shape
A) atoms gain electrons B) atoms form molecules C) atoms lose electrons D) atomic nuclei break down
A) The energy remains unchanged. B) It changes form, but is neither destroyed nor increased C) It is changed into matter D) It is destroyed
A) bread dough B) seawater C) vitamin C (ascorbic acid) D) vinegar (5% acetic acid)
A) any group of elements that are chemically bonded to one another B) a blend of any two or more kinds of matter, as long as each maintains its own unique properties C) any substance with a uniform composition D) a combination of pure substances bonded chemically
A) chemically bonded B) heterogeneous C) homogeneous D) a compound.
A) random list B) periodic chart C) element table D) chemical chart
A) salt water B) a gold ring C) sucrose D) granite
A) orange juice B) raw milk C) air D) marble
A) actinides B) groups or families C) periods D) rows of elements
A) easy to break down into its components B) very brittle C) a good electrical and heat conductor D) very hard
A) unreactive B) lanthanides C) semiconductors D) from outer space
A) a good conductor B) malleable C) used to make jewelry D) brittle |