When potassium metal is added to water, a violent reaction occurs that releases a tremendous amount of light and thermal energy. This is an example of an reaction. 1). endothermic
2). exothermic

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

What occurs when a cell engulfs large food particals