question: The majority of elements, including iron and copper, are of what type?
distractor3: minerals
distractor1: oils
distractor2: acids
correct_answer: metals
support: There are almost 120 known elements. As you can see from Figure below , the majority of elements are metals. Examples of metals are iron (Fe) and copper (Cu). Metals are shiny and good conductors of electricity and heat. Nonmetal elements are far fewer in number. They include hydrogen (H) and oxygen (O). They lack the properties of metals.