There are slightly more than one-hundred elements known to exist. The smallest complete unit of an element that serves as the basic building block of matter is the

A. atom.

B. proton.

C. neutron.

D. nucleus.

If you were looking up at the sky during the day and the Sun appeared to be blacked out by an object passing in front of it, you would most likely be witnessing

Formula for acceleration

A particular battery lasts 14.5 hours. what percentile is its lifetime on?

A 0.145 kg baseball is thrown from a platform above the ground at a 10 m/s. the ball is moving 15 m/s when it strikes the ground. from what height above the ground was the ball thrown? 6 m 10 m 1 m 5 m

How do you know or find out if an element is a solid, liquid or gas?

Consider four objects: A, B, C, and D. If A is negatively charged and B and C attract A but repel each other, what is the charge on B and C? A. Both B and C are positively charged. B. Both B and C are negatively charged. C.

36 kilo-joules to joules?

5 things that will speed up a reaction

Which phase of matter do scientists ignore the forces of attraction between particles? a. solid b. liquid c. gas

A radio-controlled car increases its kinetic energy from 4 j to 12 j over a distance of 2 m. what was the average net force on the car during this interval?