When determining an element's identity, what is the most important subatomic part to examine? a) electrons b) neutrons c) valence electrons d) protons

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

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace

Silver reacts with oxygen to produce silver oxide. (write balanced chemical equation and identify type of chemical reaction.)