This type of thermometer relies on a liquid to contract will colder and expand when warmed. A)infrared B)thermistor C) bulb

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

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

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium