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