Chemistry Final Exam

Which of the following is a physical change?

The amount of disorder in a system is measured by its

What is the number of moles in 500 L of He gas at STP?

Which of the following was originally a tenet of Dalton's atomic theory, but later revised?

Where are the electrons most probably located in a molecular bonding orbital?

How much H₂0 at 100°C could be vaporized by adding 120 kJ of heat? (Hvap = 40.7 kJ/mol)

If E is an element, which two of the following symbols represent isotopes of the same element?

What is the SI unit of mass?

How are radioactive isotopes used to diagnose thyroid problems?

What is the main detector of a scintillation counter?

What is the main product of the fusion reactions in our sun?

What is the mass of oxygen in 250 g of sulfuric acid, H₂SO₄?

Which of the following pairs of substances best illustrates the law of multiple proportions?

What is the name of the compound CH₃CH(CH₃)C(CH₃)₃?

Sulfur hexafluoride is an example of a

Which element can form diatomic molecules held together by triple covalent bonds?

Which of these metals tends to resist losing electrons to corrosion?

When the pressure and number gas particles are constant, which is also constant?

How many liters of NH react with 5.3g O₂ to form NO₂ and water? 4NH₃ + 70₂ ---> 4NO₂ + 6H₂O

In Bohr's model of the atom, where are the electrons and protons located?

If the temperature of a piece of steel decreases, what happens to its density?

What happens when a piston is used to decrease the volume of a contained gas?

Which term represents the entire set of chemical reactions carried out by an organism?

Which of the following is true of melting ice at temperatures above 0C?

Which of the following electron configurations of outer sublevels is the most stable?

Of the elements Pt, V, Li, and Kr, which is a nonmetal?

When the external pressure is 505 kPa, what is water's vapor pressure at its boiling point?

What chemical reaction involves synthesis of the polymer, polyethylene, from ethene monomers?

What is the number of moles in 432 g Ba(NO₃)₂?

Which of the following is a pseudo-noble-gas electron configuration?

In the kinetic theory, the particles in a gas

Which of the following is true for all chemical reactions?

Experimental evidence suggests that the H—C—H bond angles in ethene, CH, are ____.

What's the concentration of a solution that contains 6 moles of solute in 2 liters of solution?

What information does a molecular formula provide?

Which of the following substances dissolves most readily in gasoline?

What is the name of H₂SO₃?

A catalyst is

If a balloon is heated, what happens to the volume of the air if the pressure is constant?

What are quanta of light called?

How can all indicators be described?

Molecular orbital theory is based upon which of the following models of the atom?

The quantum mechanical model of the atom

Which of the following would a chemist be most likely to study?

If a balloon is heated, what happens to the pressure if the volume remains constant?