What type of energy is needed to get a reaction started?

What are the three forms of water and what are the scientific names when they change into each other

Would it be possible to conduct an UV/Vis spectroscopy experiment on a sample of the compound C3H3O2? Explain.

Mass will increase as ... gravity decreases gravity increases number of particles increases Number of particles decreases

Which of the following statements is true? Physical properties cannot be tested without changing the chemical structure of the substance. Under normal conditions, atoms have a positive charge.

What change in energy occurs when you burn coal or petroleum?

An atom of beryllium (m = 8.00 u) splits into two atoms of helium (m = 4.00 u) with the release of 92.2 kev of energy. if the original beryllium atom is at rest, find the kinetic energies and speeds of the two helium atoms

The most penetrating neclear radiation is

Certain object has a mass of 60 g and a volume of 32.6 cm³ what type of objects is the density

Which of the following statements is true? A. A producer usually obtains food by hunting other organisms. B. Humans that prepare their own meals are producers. C. A producer must be a plant. D. Consumers depend upon producers for food.

If the coral and the fish were removed from the ocean ecostyem. How would the ecostyem change?