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