Maybe her old shoes had soft worn out bottoms and she slips in them. So her new shoes had more grip than her old ones so they kept her from falling.
Answer:
18
Explanation:
The atomic number of chlorine is 17 therefore the atom has 17 electrons, the ion however has 1 extra electron. The charge becomes negative because electrons have a negative charge. 17 + 1 = 18, therefore a chlorine ion with a charge of -1 has 18 electrons.
Air will try to expand and will use every little bit of space to stuff more air in like a chipmunk.
Duhh!
An electrochemical is a type of cell capable of generating electricity from chemical or facilitating chemical reaction through electrical energy
