In ancient Greece, it was proposed that matter is composed of Earth, air, water, and fire and that these elements have what?

If an engineers greatest concern is easy maintanance of a rocket throughout the years, the rocket should be designed to use which type of fuel?

What loop does the water turn into steam and forces the turbine to turn

Which planet is made of mostly gas

An unspecified ratio of nitrogen gas and hydrogen gas are mixed in a container and then react to form ammonia. the initial mole fraction of nitrogen gas and the final mole fraction of nitrogen gas are the same.

Compare and contrast between nuclear fission and fusion

What is the independent, dependent, control group and constant: A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight.

Where are two places that scientists obtain scientific knowledge

Which of the following best describes what happens when an ionic bond forms? A) two atoms come together and share electrons in order to fill their octets. B) two atoms give up their electrons in order to form a bond.

Describe the attraction between 2 atoms as a result of sharing electrons

I need to know about mitosis and meiosis