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