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