What are the benefits to using element symbols to help you balance?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Which description best characterizes the motion of particles in a solid?