8th Grade Chemistry Quiz

Which group on the periodic table has the greatest number of metallic elements?

• Group 2 (IIA)

• Group 7 (VIIB)

• Group 13 (IIIA)

• Group 18 (VIIIA)

Why are the noble gases such as helium (He) and neon (Ne) grouped together in the periodic table?

• They are nonreactive gases.

• They are highly reactive metallic solids.

• They are dangerous gases when combined with water.

• They are liquid at room temperature and have high boiling points.

In which group are the most reactive metals located?

• Group 1 (IA)

• Group 2 (IIA)

• Group 17 (VIIA)

• Group 18 (VIIIA)

Which best describes elements on the far right side of the periodic table?

• Gas

• Liquid

• Dense

• Malleable

Which best describes how the physical properties of elements generally vary across a period?

• The elements on the left side of a period have nonmetallic properties, while the elements on the right side of a period have metallic properties.

• The elements on the left side of a period have metallic properties, while the elements on the right side of a period have nonmetallic properties.

• The elements on the left side of a period have both metallic and nonmetallic properties, while the elements on the right side of a period have metallic properties.

• The elements on the left side of a period have nonmetallic properties, while the elements on the right side of a period have both metallic and nonmetallic properties.

Tags

NGSS.HS-PS1-1

What category of elements is found along the bold staircase line between the metals and nonmetals on the periodic table?

• Noble gases

• Metals

• Metalloids

• Nonmetals

Several samples of elements are placed on a lab table for students to observe. In his laboratory report, Jonathan records, 'Sample 1 is a shiny wire.' Which element is most likely sample 1?

• Bromine (Br)

• Hydrogen (H)

• Oxygen (O)

• Zirconium (Zr)

Which property do metalloids share?

• Conductive

• Semiconductive

• Nonreactive

• Highly reactive

Which category contains the majority of elements on the periodic table?

• Lanthanides

• Metalloids

• Nonmetals

• Metals

Which group of elements contains the most reactive metals?

• alkaline earth metals

• transition metals

• metalloids

• alkali metals