Periodic table: properties and bonding

Valence, octet, and stability in atoms refer to which of the following?

• The number of electrons in the outermost shell, achieving eight electrons for stability, and the tendency of atoms to become stable by completing their outer shell.

• The number of protons in the nucleus, the total number of neutrons, and the atomic mass.

• The arrangement of atoms in a molecule, the number of bonds formed, and the melting point of the substance.

• The color of the atom, its size, and its reactivity with water.

Which of the following lists one property for each: metal, nonmetal, and metalloid?

• Metal: conducts electricity, Nonmetal: brittle, Metalloid: semiconductive

• Metal: brittle, Nonmetal: shiny, Metalloid: nonconductive

• Metal: semiconductive, Nonmetal: malleable, Metalloid: dull

• Metal: nonconductive, Nonmetal: malleable, Metalloid: shiny

Predict types of bonds that will form based on periodic table location (Metals, Nonmetals, Metalloid). What type of bond is likely to form between a metal and a nonmetal?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

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Based on the special motivational message, what should you be able to explain to be successful today?

• How you can predict properties AND bonding type using the periodic table.

• How to balance chemical equations using only the periodic table.

• How to calculate atomic mass without any reference.

• How to memorize all element symbols in order.

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What are valence electrons?

• Electrons in the innermost energy level

• Electrons in the outermost energy level

• Protons in the nucleus

• Neutrons in the nucleus

Valence electrons determine how atoms act and their properties.

• True

• False

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Elements in the same group have ______ properties.

• similar

• different

• opposite

• random

Which part of the atom contains the valence electrons?

• The nucleus

• The innermost shell

• The outermost shell

• The protons

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Which of the following lists contains 3 elements that would be malleable?

• Gold, Silver, Copper

• Oxygen, Nitrogen, Helium

• Sulfur, Phosphorus, Carbon

• Chlorine, Neon, Argon

Which of the following lists contains only elements that would not conduct electricity?

• Sulfur, Phosphorus, Iodine

• Copper, Silver, Gold

• Iron, Nickel, Zinc

• Sodium, Potassium, Calcium

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