What do the colors produced by fireworks indicate?

Name everyday objects where insulation is used to keep objects warm or cool. If you answer this question you are a angle confirmed.

When Raymond observes certain natural phenomena, he often forms ideas about their causes and effects. Suppose that Raymond surmises that leaves change color in autumn due to scarcity of sunlight.

After a reaction has gone to completion, it is not reversible.

Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. the ending substances did not look the same as the starting substances.

If two objects have he same volume but one has greater mass, the one with greater mass?

What can the particles of a liquid do that the particles of a solid can't do?

What is the molarity of a solution prepared by dissolving 10.0g of kno3 in 250 ml of solution

What do nucleus act as

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?