Periodic Table

alkali metals and halogens are similar because both are ___.

reactive

elements that bond easily with eachother are __.

reactive

group number, classification, uses, and valence electrons of alkaline earth

2;metal;fireworks, bones, and X-rays;2

group number, classification, uses, and valence electrons of transition metals

3-12;metal;pipes and wires;varies

Which period is tin in?

5

first element of noble gases group

Helium

halogens are ____.

Highly reactive

in the periodic table, all noble gasses are listed where?

In a column on the far right (group 18)

the groups below the periodic table are called ___.

Lanthanides and Actinides

first element of alkali metal group

Lithium

what can radioactive elements be used for?

Medical and nuclear applications

who put the periodic table of elements together?

Mendeleev

alkali, alkaline earth, and lanthanides make up what group?

Metals

how do metals, nonmetals, and metalloids differ?

Metals // conductors, shiny, malleable, ductile Nonmetals // dull, brittle Metalloids // semi conductors

a ___ can contain all three types of elements: metals, nonmetals, or metalloids.

Mixed group

which of the following elements is an alkali metal: Ca, Cu, Fe, Na, Sc

Na

which of the following is a nonmetal: cerium, cesium, carbon, calcium, copper?

carbon

the element potassium has ___ valence electrons. hint : it is in group 1

1

a group is the column of elements numbered ___.

1-18

a period is the row of elements numbered __.

1-7

What are the order of the groups?

1-Alkali 2-Alkaline earth 3-12-Transition metals 17-halogens 18-noble gases

group number, classification, uses, and valence electrons of halogens

17;nonmetal;disinfectant and water purifier;7

nonreactive elements are in what group?

18

group number, classification, uses, and valence electrons of noble gases

18;nonmetal;signs and balloons;8

group number, classification, uses, and valence electrons of alkali metals

1;metal;mediation and batteries;1

which element is in the same family as selenium? A.Po B.Pd C.Pt D.Pd

A.Po

first element of actinides group

Actinium

What family does Rb belong to?

Alkali

a mixture of two or more metals like bronze and steel are called an ___.

Alloy

nonmetals form ____.

Anions

which of the following is a noble gas: Ar, N, H, O

Ar

which of the following metals are on the periodic table? A)bronze B)platinum C)brass D)pewter

B)platinum

the symbol Ag can be used to represent __. A.silver ion B.silver atom C.silver isotope D.gold

B.silver atom

which of the following elements is the most similar to chlorine: H, He, Na, Hg, Br

Br

the property that is not typical of a metal is ___.

Brittle

how did henry mosely recognize the periodic table?

By atomic number

which element is not a transition metal? A.cobalt B.copper C.carbon D.chromium

C.carbon

which of the following elements is an alkaline earth metal: Ca, Cu, Fe, Na, Sc

CA

Which alkaline earth metal has 18 electrons as a stable ion?

Calcium

Which halogen is in the third period?

Chlorine

the element mercury is not a __. A.metal B.liquid C.transition metal D.metalloid

D.metalloid

which subatomic particle determines the chemical behavior of an atom?

Electron

first element of halogen group

Fluorine

first element of nitrogen group

Nitrogen

____ elements are found in periods 6&7; they can be used to make energy in power plants or detect abnormalities in the body.

Radioactive

first element of transition metal group

Scandium

explain the similarities that exist between elements in the same group

They have the same amount of valence electrons

a __ has varying amounts of valence electrons

Transition metal

elements that are man made are called __.

synthetic