Periodic Table Review

Which element has properties similar to Calcium (Ca)?

• Magnesium (Mg)

• Sodium (Na)

• Potassium (K)

• Barium (Ba)

What is the atomic number of an element?

• The number of neutrons in the nucleus of an atom.

• The number of protons in the nucleus of an atom.

• The total number of electrons in an atom.

• The mass of an atom measured in atomic mass units.

What are the properties of nonmetals?

• Nonmetals are generally shiny, good conductors of heat and electricity, and malleable in solid form.

• Nonmetals are generally dull, poor conductors of heat and electricity, and brittle in solid form.

• Nonmetals are generally colorful, excellent insulators, and flexible in solid form.

• Nonmetals are generally transparent, good conductors of heat, and ductile in solid form.

What are the properties of metals?

• Metals are typically dull, poor conductors of heat and electricity, brittle, and non-ductile.

• Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.

• Metals are typically transparent, good insulators of heat and electricity, rigid, and non-malleable.

• Metals are typically soft, good conductors of sound, and easily breakable.

What is the difference between atomic mass and atomic number?

• Atomic mass is the number of protons in the nucleus, while atomic number is the weighted average mass of an element's isotopes.

• Atomic mass is the weighted average mass of an element's isotopes, while atomic number is the number of protons in the nucleus.

• Atomic mass is the total number of neutrons in an atom, while atomic number is the total number of electrons.

• Atomic mass and atomic number are the same and represent the mass of an atom.

Where are valence electrons located?

• In the nucleus of the atom.

• In the outermost energy level of an atom.

• In the inner electron shells.

• Randomly distributed throughout the atom.

How many neutrons are in an atom of Sodium (Na)?

• 10

• 11

• 12

• 13

What is the significance of the periodic table?

• It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

• It lists all known elements in alphabetical order.

• It provides a visual representation of chemical reactions.

• It categorizes elements based on their color and size.

What are the main groups of the periodic table?

• Alkali metals, alkaline earth metals, transition metals, halogens, and noble gases.

• Lanthanides, actinides, metalloids, and nonmetals.

• Alkali metals, alkaline earth metals, and rare earth elements.

• Noble gases, transition metals, and synthetic elements.

What is a chemical bond?

• A temporary interaction between molecules that does not lead to compound formation.

• A lasting attraction between atoms that enables the formation of chemical compounds.

• A type of bond that only occurs in ionic compounds.

• A force that repels atoms from each other.