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