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