The rare earth elements include a. the actinide series and the alkaline earth metals. b. the alkali metals and the transition metals. c. the lanthanide series and the actinide series. d. the lanthanide series and the alkali metals.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Amedication is given at a dosage of 3.000 mg of medication per kg of body weight. if 0.1500 g of medication is given, then what was the patient's weight in pounds (lbs)? there are 453.59g in 1 lb.