Thermal energy had a direct effect on:

a. States (phases) of matter

b. Mass

c. Elastic potential energy

d. Gravitational potential energy

1. Which is not an example of a physical change to a wooden stick? A) slicing wood shavings from the stick B) bending the stick back and forth C) burning the stick D) chopping the stick in half

What element produces violet light of approximately 412 nm? a. hydrogen b. mercury c. sodium d. neon

How many molecules are there in 4.00 moles of glucose

Which compound type is formed when two atoms share two electrons

Which of these best describes the term phospholipid? a a polar lipid molecule that fully interacts with water. b a nonpolar lipid molecule that is made amphipathic by the addition of a phosphate.

You are in space and running out of water. You do have a great deal of magnesium carbonate pentahydrate. It is possible to extract the water from this.

What form of energy emission accompanies the return of excited electrons to the ground state?

A chemistry student was asked to draw the electron configuration for carbon. Explain what is wrong with the electron configuration below. What rule did the student violate (Aufbau principle, Pauli Exclusion principle, or Hund's rule) ? 1s22s23p2

During a laboratory experiment, 36.12 grams of Al2O3 was formed when O2 reacted with aluminum metal at 280.0 K and 1.4 atm. What wa volume of O2 used during the experiment? 302 + 4A1 - 2A1203

The relative abundance of the two isotopes is 99.9999 percent and 0.0001 percent, respectively. 1.0066 amu 3.0160 amu 3.5903 amu 4.0026 amu