chem h unit 4

Question 0

Periods

Answer 0

Horizontal rows of elements, numbered 1-7

Question 1

Groups

Answer 1

Also called families, elements in vertical columns, have similar properties, labeled 1A-8A or 1B-8B

Question 2

Block at the bottom of the periodic table

Answer 2

Removed from the periodic table to make it more condensed

Question 3

Metals

Answer 3

Most elements are metals, luster, conduct heat and electricity, solid at room temperature, malleable and ductile

Question 4

Nonmetals

Answer 4

Opposite of metals, no luster, poor conductors of heat and electricity, not malleable or ductile, solid liquid or gas, physical properties vary greatly

Question 5

Metalloids

Answer 5

Can have properties of metals or nonmetals or a combinations of both

Question 6

Alkali metals

Answer 6

Very reactive, 1A, because of this they’re compounds with other elements, reactive, Na in salt and Li in batteries

Question 7

Alkaline earth metals

Answer 7

2A highly reactive but not as much as akali metals, Ca and Mg good for health

Question 8

Halogens

Answer 8

7A, 5 elements, highly reactive, compounds with these are called salts, exist at room temperature in three states, bromine is a liquid, f and cl is gas, iodine and astatine is a solid

Question 9

Noble gases

Answer 9

6 elements, 8a, called inert until the 1960s bc outer shells percent from readily forming compounds, stable,

Question 10

Inner transition metals

Answer 10

2 blocks, 30 elements, most are man made