What type of reaction is shown below? CaCO3(s) → Cao(s) + CO2(g)
A. Decomposition
B. Single-displacement
C. Combustion
D. Double-displacement

In an oxidation-reduction reaction, oxidation is what happens when a reactant

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.