Post-Test General Chemistry I

Which of the following particles is found in the nucleus of an atom?

• A. Proton

• B. Neutron

• C. Electron

• D. Both Proton and Neutron

Give the mass number for an atom that has 10 protons, 10 electrons, and 11 neutrons.

• A. 31

• B. 20

• C. 10

• D. 21

Which model of the atom was proposed by Niels Bohr?

• A. Rutherford model

• B. Quantum mechanical model

• C. Planetary model

• D. Plud pudding model

What do you call atoms of the same element that have different numbers of neutrons?

• A. Ions

• B. Isotopes

• C. Allotropes

• D. Isomers

Which law relates volume and pressure at constant temperature?

• A. Charle's Law

• B. Boyle's Law

• C. Avogadro's Law

• D. Gay-Lussac's Law

Jacques Charles was a French hot air balloonist and scientist. He discovered Charle's law by studying the relationship between the volume and temperature of a gas at a constant atmospheric pressure. As the temperature of the gas in a balloon increased, its volume also increased. These increases inflated and lifted the balloon.

If the volume of a gas at a certain pressure is halved, ___________.

• A. its temperature is halved

• B. its temperature is doubled

• C. its temperature remains constant

• D. its temperature increases according to a geometric progression

What is the name given to the horizontal rows in the periodic table?

• A. Groups

• B. Rows

• C. Blocks

• D. Periods

What property generally increases as you move from right to left across a period in the periodic table?

• A. Atomic radius

• B. Ionization energy

• C. Electronegativity

• C. Electron Affinity

Which of the following elements is a gas at room temperature?

• A. Chlorine

• B. Mercury

• C. Carbon

• D. Sodium

Which of the following is a physical change?

• A. Rusting

• B. Burning

• C. Melting

• D. Decomposition