Which of the following is a mixture?

a - milk

b - salt

c - crude petroleum

d - sea water

Fusion and radioactive decay are both types of nuclear processes. What does nuclear mean in this context

The big bang theory suggests that the universe is how old

When two gases of a chemical reaction are both at the same temperature and pressure and they have the same molar volume, what is their stoichiometric ratio in the chemical equation describing the reaction?

Which statement is true about the particles of a solid when the solid changes into a liquid? 1) They stop vibrating. 2) Their kinetic energy increases. 3) They move closer to each other. 4) The attractive force between them increases.

Classify metals based on more reactive, moderate and less reactive

Common properties of sodium, calcium, iron, and gold

The closeness of a measurement to its actual value is a measure of its A. usefulness. B. reproducibility. C. precision. D. accuracy.

At 300 k the pressure inside a gas filled container is 500 kPa if the pressure inside decreses to 100kpa but the volume remains the same what is the final temperature of the gas

The SI unit for current is: joules volts ohms amps

In chemical reactions, there is a conservation of what?