Which use of iron is due to its chemical properties? A. producing colored sparks in fireworks
B. changing liquid to gas at 2,862*C
C. conducting electricity and heat
D. changing from solid to liquid if heated to 1,538*C

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

Compare and contrast the bohr model and the electron cloud models of the atom.

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?