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