A student shines a flashlight on a mirror. What happens to the light?
O A. The light is reflected by the mirror.
OB. The light is absorbed by the mirror.
O C. The light travels around the mirror.
OD. The light travels through the mirror.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons