Which of the following is the best definition of a base?

Bases are substances that donate protons,

Bases are substances that accept electrons.

Bases are any substances without hydroxide ions.

Bases are substances that release hydroxide ions.

What kind of energy transformation occurs when the skaters board falls back to the ramp

Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.50 L, 2.6 g/cm3; 0.25 L, 1.0 g/cm3; and 0.40 L, 0.70 g/cm3. What is the force on the bottom of the container due to these liquids

Which end (blue or red) of the visible spectrum has the longer wavelength? Which has the higher frequency?

When does a liquid behave like a solid

What is the momentum of an object that is traveling at 3 m/s and has a mass of 5 kg?

Why is a neutral object attracted to a charged object?

The international space station revolves around earths surface. which of the following statement s is true? a. it has no energy because it is stationary b. it has potential energy, but does not have kinetic energy c.

A sports car moving at constant speed travels 115m in 5.3 s. If it then brakes and comes to a stop in 4.0 s, what is it's acceleration? Express the answer in terms of g's, where g = 9.

Question 11 1 pts Nuclear power plants rely on to generate power. O climate change O fusion Ofission O coal

Which of the following is not a characteristic that geologists use to identify minerals? A. Softness B. Color C. Streak D. Fracture