What is a Substance?

A) a uniform mixture that can't be separated

B) a mixture that can be separated

C) a single component that can't be separated

D) a single component that can be separated

Is natural gas inexhaustable

When a covalent bond forms between two atoms, how many atoms have a full outer shell of electrons? A) one B) two C) zero D) It depends on what the atoms are.

Which best describes what all of the observations have in common?

Pressure and volume changes at a constant temperature can be calculated using a. Boyle's law. c. Kelvin's law. b. Charles's law. d. Dalton's law.

If a 2 kg ball traveling at 10 m/s hits a wall and stops in 0.03 seconds, then how much force will the ball experience?

Electromagnetic waves with low frequencies have been used for long-distance underwater communication. These waves most likely belong to which of the following parts of the electromagnetic spectrum? A. gamma rays B. infrared waves C. radio waves D.

A bird sitting high in a tree is an example of an object with what type of energy

The height a ball bounces is less than the height of the previous bounce due to friction. The heights of the bounces form a geometric sequence. Suppose a ball is dropped from one meter and rebounds 95 % of the height of the previous bounce.

Five-gram samples of copper and aluminum are at room temperature. Both receive equal amounts of energy due to heat flow. The specific heat capacity of copper is 0.09 cal/g°C, and the specific heat capacity of aluminum is 0.22 cal/g°C.

A bullet travels at 870 m/s. How long will it take a bullets to go 1 m?