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