Periodic Table

What does the number '6' represent in the context of an element?

• Atomic number.

• Mass number.

• Molecular weight.

• Electronegativity.

How is the Modern Periodic Table of Elements arranged?

• By atomic mass.

• By atomic number.

• By alphabetical order.

• By density.

What are valence electrons?

• Electrons in the outermost shell of an atom that determine its chemical properties.

• Electrons that are found in the nucleus of an atom.

• Electrons that are involved in the formation of isotopes.

• Electrons that are always paired with protons in an atom.

What is a period in the periodic table?

• A vertical column of elements with similar properties.

• A horizontal row of elements that have the same number of electron shells.

• An element that has a full outer electron shell.

• A group of elements that are chemically similar.

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 is a group in the periodic table?

• A horizontal row of elements with similar properties.

• A vertical column of elements with similar properties.

• A collection of elements that are chemically inert.

• A set of elements that have the same atomic number.

Identify a nonmetal in period 2 and group 16/6A.

• Oxygen (O)

• Nitrogen (N)

• Fluorine (F)

• Carbon (C)

Identify a metal in group 2 and period 6.

• Barium (Ba)

• Calcium (Ca)

• Strontium (Sr)

• Magnesium (Mg)

What is the significance of the periodic table?

• It organizes elements based on their atomic structure and properties.

• It lists all known elements in alphabetical order.

• It predicts the weather patterns based on chemical reactions.

• It serves as a guide for cooking and food preparation.

What is the difference between metals and nonmetals?

• Metals are typically dull, insulative, and brittle, while nonmetals are shiny, conductive, and malleable.

• Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle.

• Metals are usually soft, non-conductive, and flexible, while nonmetals are hard, conductive, and rigid.

• Metals are generally transparent, non-conductive, and fragile, while nonmetals are opaque, conductive, and tough.