Unified Semester Test

Two elements in the same group on the periodic table of the elements are MOST similar in their

• Atomic Mass

• Number of Protons

• Chemical Reactivity (properties)

• Atomic Size

Which model represents a particle with no charge?

• A

• B

• C

• D

What is the net charge?

• 0

• -2

• +1

• +2

Which statement BEST describes the organization of the periodic table of the elements?

• All gasses are grouped together

• Gasses easily form compounds with other elements

• Element within a Group/Family have similar properties

• Elements within the same period all have the same number of electrons

All these are elements EXCEPT:

• Gold

• Sodium Chloride

• Helium

• Aluminum

Neon (Ne), argon (Ar), krypton (Kr) are in the same column on the periodic table of the elements. What characteristics do these elements have in common?

• Atomic Mass

• Negative Electrical Charge

• Full Valence Electrons Shells

• Number of Neutrons

Which set of element contains only metals?

• Iodine, Iron, Nickel

• Phosphorus, Nitrogen, Oxygen

• Helium, Carbon, Gold

• Sodium, Chromium, Copper

The tendency of an element to react chemically is closely related to:

• The ratio of protons to neutrons

• How tightly the atoms are packed

• The number of valence electrons

• The number of neutrons in the nucleus.

Copper, silver, and nickel are all classified as

• Noble Gases

• Halogens

• Transition Metals

• Nonmetals

Which parts of an atom are reactive during a chemical process?

• Protons

• Neutrons

• Electrons

• Quarks