Gold is used for jewelry because it is malleable. This means it can be easily molded into different shapes. What is this an example of? A. Physical change B. Chemical property C. Chemical change D. Physical property Help!

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

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