What type of energy is likely changed into thermal energy in this hand warmer?

A. electromagnetic energy

B. electrical energy

C. chemical energy

D. kinetic energy

Select all of the characteristics that define matter. A.) Matter has mass. B.) Matter has volume (takes up space). C.) Atoms and compounds are made out of matter. D.) All matter has the same density.

If an athlete weighs 141 lb and has 15.0% body fat by weight, how many pounds of fat does the athlete's body contain?

A sample of copper with a mass of 63.5g contains 6.02 x10 23 atoms calculate the mass of a single copper atom

Which example involves a phase change in which heat energy is released by the substance

What is the acceleration of an object that goes from 3 m/s to 5 m/s in 8 s?

Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons composing it? Why don't the nucleon masses add up to the total nuclear mass?

Consider the equilibrium system below. If the system is at dynamic equilibrium, which statement is true? a. Sublimation of the NH4CI crystals stops. b. Solidification of the NH4CI vapors stops. c.

What happens to the atomic radius as the atomic number increases down and why

What is the oxidation number of sulfur in H2SO3? a. + 3 b. + 1 c. + 2 d. + 4

A) Write the formula of the conjugate base for acid HF. b) Write the name of the conjugate base found in part A.