Periodic Table

what are the properties of non- metals?

• Non-metals have high melting and boiling points, good conductivity of heat and electricity, malleability, and shiny appearance.
• Non-metals have low melting and boiling points, poor conductivity of heat and electricity, brittleness, and dull appearance.
• Non-metals have low melting and boiling points, excellent conductivity of heat and electricity, flexibility, and shiny appearance.
• Non-metals have high melting and boiling points, excellent conductivity of heat and electricity, flexibility, and shiny appearance.

What are the properties of metals?

• High electrical and thermal conductivity, malleability, ductility, and luster
• Low electrical and thermal conductivity, brittleness, and dullness
• Low electrical and thermal conductivity, malleability, and ductility
• High electrical and thermal resistance, brittleness, and luster

Tags

NGSS.MS-PS3-3

What are the properties of a metalloid?

• Metalloids are shiny, brittle semi- metal

• Metalloids have properties of both metals and nonmetals, but in equal proportions.
• Metalloids have properties of only nonmetals.
• Metalloids have properties of only metals.

What is anion? How is it made and what kinds of elements typically make them?

• An anion is a positively charged ion that is formed when an atom loses one or more electrons. Metals typically make anions.
• An anion is a neutral ion that is formed when an atom gains or loses electrons. Both metals and nonmetals can make anions.
• An anion is a positively charged ion that is formed when an atom gains one or more electrons. Nonmetals typically make anions.
• An anion is a negatively charged ion that is formed when an atom gains one or more electrons. Nonmetals typically make anions.

What is the most reactive metals group? What is the most reactive non- metal group? Why are they so reactive?

• Group 2 (alkaline earth metals) and Group 16 (chalcogens)
• Group 13 (boron group) and Group 15 (pnictogens)
• Group 1 (alkali metals) and Group 17 (halogens)
• Group 3 (transition metals) and Group 18 (noble gases)

Tags

NGSS.HS-PS1-2

What do elements in the same period have in common? What does a period number represent for all the elements in period?

• Elements in the same period have the same number of valence electrons. The period number represents the number of valence electrons for all the elements in that period.
• Elements in the same period have the same atomic mass. The period number represents the atomic mass for all the elements in that period.
• Elements in the same period have the same number of protons. The period number represents the number of protons for all the elements in that period.
• Elements in the same period have the same number of electron shells. The period number represents the number of electron shells for all the elements in that period.

Tags

NGSS.HS-PS1-1

What is a cations? how is made and what kinds of elements typically make them?

• A cation is a positively charged ion formed by the loss of one or more electrons. Elements that typically form cations are metals.
• A cation is a type of molecule formed by the combination of two or more atoms. Elements that typically form cations are halogens.
• A cation is a neutral ion formed by the gain or loss of one or more protons. Elements that typically form cations are noble gases.
• A cation is a negatively charged ion formed by the gain of one or more electrons. Elements that typically form cations are nonmetals.

How did Mendeleev organize the periodic table? How did Moseley update it ?

• Mendeleev organized the periodic table by atomic number and chemical properties. Moseley updated it by atomic mass.
• Mendeleev organized the periodic table by atomic weight and chemical properties. Moseley updated it by atomic radius.
• Mendeleev organized the periodic table by atomic mass and chemical properties. Moseley updated it by atomic number.
• Mendeleev organized the periodic table by atomic size and chemical properties. Moseley updated it by atomic weight.

What is the least reactive group? Why are they so chemically inert?

• Transition metals
• Halogens
• Alkali metals
• Noble gases

What do element in the same group have in common?

• They have the same atomic number and similar physical properties.
• They have the same number of protons and similar chemical properties.
• They have the same number of neutrons and similar atomic masses.
• They have the same number of valence electrons and similar chemical properties.

Tags

NGSS.HS-PS1-1