An atom contains three protons, two neutrons, and one electron. What is the charge of the nucleus? A: 3+
B: 5+
C: 2+
D: 0

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

Avariable that is not being directly tested during an experiment should be

Which liquid (h2o, h2o + soap, or h2o + salt) has the strongest cohesion and adhesion? (need now plz)