7 protons and 10 electrons. Neutral atom or ion? 15 protons and 15 electrons. Neutral atom or ion?
35 protons and 37 electrons. Neutral atom or ion?
Give the element abbreviation and charge.
5 protons and 2 electrons: Element: B Charge: +3
16 protons and 18 electrons: Element:
Charge:
35 protons and 36 electrons: Element:
Charge:

What is the relation between concentration of reactants and the rate of chemical reaction?

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that

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