The table shows the properties of some organic compounds.

Compound A: has only carbon and hydrogen atoms.
Compound B: has a nitrogen atom

which statement best identifies compounds A and B?

a) compound a is an ether and compound b is an alcohol
b) compound a is an alcohol and compound b is an ether
c) compound a is a hydrocarbon and compound b is an amine
d) compound a is an amine and compound b is a hydrocarbon

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic