Chapter Three, Lesson Three: Metals

Question 1

metals

Answer 1

Metals are elements that are good conductors of electric current and heat.

Question 2

luster

Answer 2

A material that has a high luster is shiny and reflective.

Question 3

malleable

Answer 3

A malleable material is one that can be hammered or rolled into flat sheets or other shapes.

Question 4

ductile

Answer 4

A ductile material is one that can be pulled out, or drawn, into long wires.

Question 5

thermal conductivity

Answer 5

Thermal conductivity is the ability of an object to transfer heat.

Question 6

electrical conductivity

Answer 6

The ability of an object to carry electric current is called electrical conductivity.

Question 7

reactivity

Answer 7

The ease and speed with which an element combines, or reacts, with other substances is called its reactivity.

Question 8

corrosion

Answer 8

The deterioration of a metal due to a chemical reaction in the environment is called corrosion.

Question 9

alkali metals

Answer 9

The metals of Group 1, from lithium (Li) to francium (Fr), are called the alkali metals.

Question 10

alkaline earth metals

Answer 10

The metals of Group 2 are called the alkaline earth metals.

Question 11

transition metals

Answer 11

The elements in Groups 3 through 12 are called the transition metals.