_____ have both metallic and nonmetallic properties.

• Nonmetals

• Metals

• Metalloids

• Halogens

_____ are different molecular structures of the same element.

• Semiconductors

• Metalloids

• Isotopes

• Allotropes

Which element is present in all organic compounds?

• silicon

• carbon

• nitrogen

• oxygen

The ____ are a small group of elements that have properties mixed between the metal and nonmetal elements.

• metalloids

• conductors

• semiconductors

• allotropes

Elements such as silicon and germanium that conduct an electric current under certain conditions are called ____

• metalloids

• allotropes

• semiconductors

• transition elements

Tags

NGSS.HS-PS1-1

All elements that have more than 92 protons can be classified as

• naturally occurring elements

• inner transition elements

• transition elements

• transuranium elements

What do all the elements in the carbon group have in common?

• They are all metalloids

• They are all semiconductors

• They all have 4 outer electrons

• They are all good conductors of electricity

Tags

NGSS.HS-PS1-1

Which of these is NOT an allotrope of carbon?

• Carbon dioxide

• Graphite

• Diamond

• buckminsterfullerene

Which of these groups on the periodic table is NOT a mixed group?

• The carbon group

• The halogen group

• The oxygen group

• The nitrogen group

What term refers to elements that are made in a lab?

• metalloids

• synthetic elements

• allotropes

• isotopes