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