Which of the processes is exothermic?

a. evaporation of alcohol

b. sublimation of iodine

c. solidification of volcanic lava

d. burning of paper

What type of energy is stored in the bonds of atoms and molecules? a. chemical energy b. electrical energy c. gravitational energy d. kinetic energy

If an element has two isotopes, what is the atomic mass if one of the isotopes has a mass of 15.000 amu and makes up 5.000% of the mass of the element while the other isotope has a mass of 16.000 amu and make up the remaining 95.000 %?

What is eutrophication?

Define the law of nature, give three examples.

If a current-carrying wire is in a magnetic field, in what direction will a force be exerted on the wire? A. Perpendicular to the magnetic field and parallel to the current direction B. Parallel to both the current direction and the magnetic field C.

Which of the following types of electromagnetic waves has a frequency greater than ultraviolet waves? A) X rays B) infrared waves C) microwaves D) visible light

For each metal complex give the coordination number for the metal species. m (nh34cl2

Particles in a liquid move around just as freely as particles in a solid. True or False

How did aristotles idea of matter differ from that of scientists

How does ease of oxidation correlate with activity? Do highly active metals tend to donate electrons or accept electrons from other metals?