5 Written Questions

1. an element that has some characteristics of metals and some characteristics of nonmetals
2. elements having more than 92 protons, all of which are synthetic and unstable
3. a molecule that consists of two atoms of the same element
4. materials having conductivity properties between that of metals and nonmetals and having controllable conductivity parameters
5. the process of a solid changing directly to a vapor without forming a liquid

5 Multiple Choice Questions

1. occurs because electrons move freely among a metal's positively charged ions and explains properties such as ductility and the ability to conduct electricity
   1. malleable
   2. metalloid
   3. metal
   4. metallic bonding
2. element that typically is a hard, shiny solid, is malleable, and is a good conductor of heat and electricity
   1. salt
   2. metalloid
   3. metal
   4. nonmetal
3. 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
   1. metal
   2. nonmetal
   3. metalloid
   4. ductile
4. element, such as radium, whose nucleus breaks down and emits particles and energy
   1. ductile
   2. transition element
   3. radioactive element
   4. transuranium element
5. different forms of the same element having different molecular structures
   1. allotrope
   2. malleable
   3. ductile
   4. salt

4 True/False Questions

1. transition element → elements having more than 92 protons, all of which are synthetic and unstable

   True        False

2. salt → compound formed when negative ions from an acid combine with positive ions from a base

   True        False

3. ductile → element that typically is a hard, shiny solid, is malleable, and is a good conductor of heat and electricity

   True        False

4. malleable → different forms of the same element having different molecular structures

   True        False