Which example in the video is a physical change? A) Burning steel wool
B) Mixing chemicals
C) Rusting nail
D) Melting ice cream

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

Is a chemical message sent by another individual.