BackA neon atom (Ne) is unreactive for which of the following reasons?
Which of the following statements correctly describes a solution?
a. In a solution the solute is chemically dissolved by the solvent.
b. Solutions involve large particles suspended in another component.
c. The particles in a solution will settle out if left to sit.
d. The amount of solute in a solution is expressed as the solution's concentration.
Provide the atomic symbol for each of the following elements:
e. Nitrogen
f. Oxygen
g. Potassium
h. Sodium
The number and arrangement of electrons in an atom's outer energy level (valence shell) determine the atom's
(a) Atomic weight
(b) Atomic number
(c) Molecular weight
(d) Chemical properties
Consider the following information about three atoms: 12/6 C 13/6 C 14/6 C
a. How are they similar to one another?
b. How do they differ from one another?
c. What are the members of such a group of atoms called?
d. Using the planetary model, draw the atomic configuration of 12/6 C, showing the relative position and numbers of its subatomic particles
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Protons and neutrons have a positive charge and electrons have a negative charge.
Which of the following is (are) true concerning the atomic nucleus?
a. It contains the mass of the atom.
b. The negatively charged subatomic particles are here.
c. Subatomic particles can be ejected.
d. It contains subatomic particles that determine atomic number.
e. It contains subatomic particles that interact with other atoms.
Match the following terms with the correct definition:
Endergonic reaction
Potential energy
Electrical energy
Anabolic reaction
Oxidation-reduction reaction
Chemical energy
Catabolic reaction
Kinetic energy
a. Energy in motion
b. Energy stored in chemical bonds
c. Reaction that consumes energy
d. A decomposition reaction
e. The energy of moving charged particles
f. Stored energy
g. Synthesis reaction
h. Reaction where electrons are transferred between reactants
Define molecule as it relates to molecular substances and compounds.