Ch. 5 Science Vocab

Question 1

the law that states that the repeating chemical and
physical properties of elements change periodically with the atomic
numbers of the elements

Answer 1

periodic law

Question 2

in chemistry, a horizontal row of elements in the periodic table

Answer 2

period

Question 3

a vertical column of elements in the periodic table; elements in a
group share chemical properties

Answer 3

group

Question 4

an atom, radical, or molecule that has gained or lost one or more
electrons and has a negative or positive charge

Answer 4

ion

Question 5

an element that is shiny and that conducts heat and electricity well

Answer 5

metal

Question 6

an element that conducts heat and electricity poorly and that
does not form positive ions in an electrolytic solution

Answer 6

nonmetal

Question 7

an element or compound that conducts electric
current better than an insulator does but not as well as a conductor does

Answer 7

semiconductor

Question 8

one of the elements of Group 1 of the periodic table

Answer 8

alkali metal

Question 9

one of the elements of Group 2 of the periodic

Answer 9

alkaline-earth metal

Question 10

one of the metals that can use the inner shell before
using the outer shell to bond

Answer 10

transition metal

Question 11

one of the elements of Group 18 of the periodic table

Answer 11

noble gas

Question 12

one of the elements of Group 17 of the periodic table

Answer 12

halogen