Module 17 Terms

Question 1

element that is shiny, malleable, ductile, and a good conductor of heat and electricity.

Answer 1

Metal

Question 2

property of metals and alloys that allows them to be hammered or rolled into thin sheets.

Answer 2

Malleable

Question 3

property of metals and alloys that allows them to be drawn into wires.

Answer 3

Ductile

Question 4

occurs because some electrons move freely among a metal’s positively charged ions, explains properties such as ductility and the ability to conduct electricity.

Answer 4

Metallic Bonding

Question 5

element, such as radium, whose nucleus breaks down and emits particles and energy.

Answer 5

Radioactive Element

Question 6

Elements in groups 3–12 of the modern periodic table and are further divided into transition metals and inner transition metals.

Answer 6

Transition elements

Question 7

element that usually is a gas or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and typically is not shiny.

Answer 7

nonmetal

Question 8

a molecule that consists of two atoms of the same element, joined by a covalent bond.

Answer 8

diatomic molecule

Question 9

element that shares some properties with metals and some with nonmetals.

Answer 9

metalloids

Question 10

different molecular structures of the same element.

Answer 10

allotropes

Question 11

material that conducts an electric current under certain conditions.

Answer 11

semiconductors

Question 12

elements having more than 92 protons, all of which are synthetic and unstable.

Answer 12

transuranium elements