Select the correct answer. Which of the following best describes physical science?
OA
the study of motion
B.
the study of matter and energy
Ос.
the study of Earth's structure and processes
OD
the study of reactions
O E.
the study of living things

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb