The Elements and Periodic Table-Chapter 15

# of electrons transition elements have in the outer energy level

2

Physical Change

A change that does not result in a new substance being formed

Chemical Change

A change that transforms one substance into a different substance

Periodic Table

A chart that organizes the elements by their chemical properties and increasing atomic #'s

Group

A column in the Periodic Table

Electrical Conductor

A material that allows electricity to flow through easily

Thermal Conductor

A material that allows heat to flow easily

Insulator

A material that slows down or stops the flow of either heat or electricity

Period

A row in the Periodic Table

Atomic Mass Unit

A unit of mass = to 1.66 x 10-24

Most reactive metals are called ______

Alkali

_________ is a different form of a element due to different arrangements of of atoms

Allotrope

An _____ is formed by metals; contains more than one element and has metallic properties

Alloy

I am a member of the boron family and am the most abundant metal in Earth's crust

Aluminum

________ is the most abundant element in Earth's crust

Aluminum

Steel

An alloy of Iron and Carbon

What does AMU mean?

Atomic Mass Unit

I am the only element in the halide family that is a liquid

Bromine

I have 20 neutrons and am found in your teeth and bones

Calcium

I am the head of the carbon family known as the "basis of life"

Carbon

______ is a element that contains 80% of known compounds

Carbon

My atomic mass (weight) is 35.453

Chlorine

Each element in a period is in a _________ group

Different

Alkali Metals

Elements in the first group of the Periodic Table

Halogens

Elements in the group containing Fluorine, Chlorine, Bromine, and among others

Noble Gases

Elements in the group containing Helium, Neon, and Argon, and among others

Non-Metals

Elements that are poor conductors of heat and electricity

Metals

Elements that are typically shiny and good conductors of heat and electricity

Vertical columns in the Periodic Table are called ________

Families

I am a gas with a mass # of 19

Fluorine

My atomic # is 79

Gold

Family of "salt-producing" elements are called ________

Halogens

I am a noble gas with 2 electrons

Helium

______ is a gas element safe to use in balloons

Helium

I am not really a alkali metal, but since I have only 1 electron I behave just like them

Hydrogen

________ is odorless, tasteless, colorless gas; lightest of all elements

Hydrogen

I am a member of the halide family with the atomic # of 53

Iodine

I have 26 protons

Iron

Most widely used metal is ____

Iron

I am a member of the carbon family often mistaken for the end of your pencil

Lead

I am a member of the alkaline earth metals used to make fireworks and medicines

Magnesium

I am a transition metal with 25 electrons

Manganese

I am a metal that is liquid at room tempature

Mercury

_______ is the only metal liquid at room temperature

Mercury

Elements on the left side of the Periodic Table are called ______

Metals

I am a metal with 28 electrons

Nickel

I make up 78% of of the air and found in the 15th group

Nitrogen

Family in group 18 on the Periodic Table

Noble Gases

Elements on the right side of the Periodic Table are called _________

Non-Metals

___ is natural material from which metals can be profitably extracted

Ore

_______ compounds that contain carbon

Organic

I am a gas with with 8 protons and 8 neutrons

Oxygen

Horizontal rows on the Periodic Table are called...

Periods

I am a member of the nitrogen family with 16 neutrons

Phosphorus

I am the first element in the 4th period used in making fertilizer

Potassium

Elements in families have similar __________

Properties

I am the 2nd most abundant element in the Earth's crust and have 14 neutrons

Silicon

_______ is the second most abundant element in Earth's crust; found in glass and sand

Silicon

My atomic # is 47 and I am used to make photographic film

Silver

I am a silvery white metal used to make salt

Sodium

I have 2 electrons in the first shell, 8 in the second shell, and 6 in the third shell

Sulfur

Atomic Mass

The average mass of all the known isotopes of an element expressed in AMU

Periodicity

The repeating pattern of chemical and physical properties of the elements

You can find me in the carbon family in the 5th period

Tin

Elements in Groups 3-12 on the Periodic Table are called __________

Transition

I am a transition metal with 30 electrons useful in making paint

Zinc

What is another name for halogen?

halide