a substance that cannot be broken down into a simpler substance by ordinary chemical means
the smallest unit of an element that has all of the properties of the element; basic building block of matter.
the number of protons and neutrons in the nucleus of one atom of the element.
the number of protons contained in each nucleus of its atoms of the element.
a horizontal row (left to right) in the periodic table.
a vertical column (up and down) on the periodic table.
a chart that organizes information about all of the known elements according to their atomic number.
describes how likely an element is to form bonds with other elements.
an element or substance that conducts heat and electricity, is malleable and ductile and has low ionization energy and low electronegativity values. Metals
an element that does not conduct electricity or heat and is usually a gas at room temperature. Nonmetals are brittle, have high ionization energies and high electronegativity values. Nonmetals tend to gain electrons to form anions
group 1 metals on the periodic table that contain 1 valence electron and lose their valence electrons the most easily, making them the most reactive metals.
group 1 metals on the periodic table that contain 2 valence electrons and are the second most reactive metals.
group 3-12 on the periodic table. They have varying valence electrons and do not follow the normal trends of the other metals. They form brightly colored compounds and ions in solution.
group 17 nonmetals on the periodic table that contain 7 valence electrons. They only need to gain 1 valence electron to have a stable octet. They gain valence electrons the most readily, making them the most reactive nonmetals.
group 18 elements on the periodic table that contain 8 valence electrons (He has 2) and a full valence shell making them very stable and inert.
an element that has some properties of a metal and some properties of a nonmetal. The metalloids are found on the boron staircase, there are 7 metalloids: B, Si, Ge, As, Sb, Te, and Po.
elements and/or compounds that when put together are unable to react chemically. The noble gases (group 18) elements are inert because of a full valence shell.
the charge of an atoms nucleus resulting from its number of protons
the distance between the nucleus of an atom and it's outermost energy level
the attraction a nucleus has resulting from its number of protons
I AM A METAL THAT IS A LIQUID AT ROOM TEMPERATURE
I AM USED TO BLOW UP BALLOONS
ELEMENTS ARE LISTED ON THE PERIODIC TABLE IN ORDER OF _______ ATOMIC NUMBER
ELEMENTS THAT HAVE BOTH PROPERTIES OF METALS AND NONMETALS ARE CALLED _____
I HAVE 26 PROTONS
I AM A METALLOID USED IN COMPUTER CHIPS
WHAT IS THE TERM THAT REFERS TO THE REPEATING PATTERNS OF CHEMICAL ACTIVITY ON THE PERIODIC TABLE
I AM SOMETIMES USED AS A POISON
ELEMENTS SUCH AS HYDROGEN, NITROGEN, AND OXYGEN ARE CALLED ______
THE SCIENTIST THAT ARRANGED THE FIRST PERIODIC TABLE
I AM THE ONLY ELEMENT IN THE HALIDE FAMILY THAT IS A LIQUID
THE FIRST COLUMN OF ELEMENTS IS NAMED
I AM THE MOST ELECTRO NEGATIVE ELEMENT ON THE PERIODIC TABLE
I HAVE THE CAPACITY TO KILL SUPERMAN
I AM NOT REALLY A ALKALI METAL BUT SENSE I HAVE ONLY 1 ELECTRON I BEHAVE LIKE THEM
MY ATOMIC NUMBER IS 79
I AM A METAL WITH 28 ELECTRONS
I AM A SILVERY WHITE METAL USED TO MAKE SALT
I AM A GAS WITH 8 PROTONS AND 8 NEUTRONS
THE SCIENTIST WHO CAME UP WITH ATOMIC THEORY
I HAVE 92 PROTONS AND WAS USED IN MAKING THE ATOMIC BOMB
THE VERTICAL COLUMS ON THE PERIODIC TABLE ARE CALLED
ELEMENTS TO THE LEFT OF THE STAIR STEP LINE ON THE PERIODIC TABLE ARE CALLED
THE VERTICAL COLUMNS ON THE PERIODIC TABLE ARE
I HAVE 92 PROTONS AND WAS USED IN MAKING THE ATOMIC BOMB
A particle with a positive charge
A particle with no charge
A particle with a negtive charge
Atoms with the same number of protons, but different number of neutrons
The number of protons in the nucleus
The number of protons and neutrons in an atom
A material that has shininess, conductivity, magnetism, malleability, and ductility
Ability to transfer heat or electricity
Ability to be pulled into wires
Ability to be hammered into shapes
An element that lacks the characteristics of a metal
An element intermediate in properties of a metal and non metal
the first element on the periodic table
Not discovered in nature, but artificially produced isotopes
What hydrogen and helium would make, if combined
The 14th element on the periodic table
Electrons in the outermost shell of an atom that are used for chemical bonds
Made up of atoms, and defined nthe number of protons in the nucleus
the 8th element on the periodic table
What lithium and helium make when combined
A particle with a single negative charge
The positively charged central part of an atom
A positively charged particles that make up a nucleus
A nuetral particle in the nucleus of an atom
The electrons in the outermost energy level of Niels Bohr's model of an atom
An area around an atomic nucleus where an electron is most likely to be found
Pure substances that cannot be broken down into any simpler substances
The number of protons in an atom of an element
Atoms of the same element that have different numbers of neutrons
The sum of the number of protons and neutrons in an atom
The average mass of an element's isotopes
A chart of elements arranged into rows and columns based on their chemical and physical properties
Vertical columns on the periodic table
Horizontal rows on a Periodic Table
A group located on the left side of the Periodic Table that is a good conductor and shine when polished
Another group located on the right side of the Periodic Table that are insulators and are not shiny
An object that has low electrical resistance and can allow electricity to flow easily
An object that has higher electrical resistance and prevents electricity easily through a material
Elements in the middle of the Periodic Table and are semiconductors.They also have properties that are similar to both metals and nonmetals
A substance that is made of two or more elements chemically joined in a specific combination
An atom no longer neutrally charged because it has lost electrons
An attraction that holds ions close together
A bond formed when two atoms share valence electrons
A chemical reaction that releases heat of light energy
Chemical Reactions that absorb energy
The speed at which a reaction occurs
A substance that speeds up chemical reactions
The "outer energy shell" of and atom
Electrons are "shared" in this type of bond.
Electrons are "stolen" in this type of bond.
The smallest unit of matter with all the properties of that substance.
This matches the number of protons in an atom.
A neutron has a ___________________ charge.
"Like" electric charges ____________________ each other.
A combination of one or more atoms.
The location around the nucleus where electrons orbit.
A charged particle.
A "Family" of elements that do not typically react with other elements.
The "Family" of elements that are very reactive.
Characteristics that are measurable or observable are called physical _____________.
Subtract the atomic number from the atomic mass to find the number of _________________.
Electrons have a ______________________ charge.
Protons have a _________________________ charge.
An abreviated way to name an element.
Other than hydrogen and helium, the number of electrons needed to fill the valence shell.
The center of an atom where the protons and neutrons are located.
An element that can have a variable number of neutrons in its nucleus.
Atoms with full outer energy shells are known to be _______________.
A group of elements with similar properties are known as a _________________.
Reactivity is a ______________________ property.
The elements are organized into this grid.
When elements react they form new _____________________.
This element is found in all organic matter and has four valence electrons.
NaCl is the ___________________________ for salt.
Each ___________________ on the periodic table represents the number of valence electrons in an element.
Each __________ on the Periodic Table represents the number of "energy levels" an element has.
The "electronic connections" between elements in a molecule.
What are positively charged particles of the atom?
What are negatively charged particles of an atom?
What particle of anatom has no charge?
Where are protons found?
Where are electrons found?
An _______ is an atom that has the same number of protons but a different number of neutrons as other atoms of the same element.
The ____ ______ is the total number of protons and neutrons.
What detrmines the identity of an atom?
What is an average of the masses of all naturally occuring isotopes of an element?
The electrons in the outermost energy level of an atom are called _______ _________.
Alkali Metals only have ___ valence electron?
Valence electrons determine the _____ of which an element si placed.
Lithium is a?
Is Flourine a metal or nonmetal?
A ______ loses an electron and becomes positively charged.
A _____ gains an electron and becomes negatively charged.
A row of elements is called a ______.
What are charged particles that form during chemical changes?
What is it called when 2 atoms of nonmetals bond?
What is it called when a metal reacts with a nonmetal?
An element in group 1 of the periodic table.
An element in group 2 of the periodic table.
The advrage mass of all the isotopes of an element.
The number of protons in the nucleus of an atom.
Negatively charged particle that moves around the outside of and atom.
A region of an atom in which electrons of the same energy are likely to be found.
Elements in the same vertical column of the periodic table.
An element found in group 17 of the periodic table.
The sum of protons and neutrons in the nucleus of an atom.
A class of elements characterized by physical properties.
An element that has some characteristics of both metals and nonmetals.
A small particle in the nucleus of the atom, with no electral charge.
An element in group 18 of the periodic table.
An element that lacks most of the properties of a metal.
A horizontal row of elements in the periodic table.
Positively charged particles that are found in the necleus of and atom.
One of the elements in groups 3 through 12 of the periodic table.
The negatively charged particle in the electron cloud.
A particle in the nucleus that is positively charged
A particle in the nucleus with a neutral, or no charge
A tiny, dense positively charged region in the center of an Atom
Particles, like protons, neutrons, and electrons that are smaller than atoms
Regions inside the Atom where electrons are likely to be found. This model developed by Schrodinger, is called Quantum Theory
The number of protons in an element
The average of the masses the neutrally occurring isotopes in element
The arrangement of elements on a table based on their atomic number
A column on the periodic table, also called a family containing elements with the same number of Valence electrons
one of a hundred or so pure substances that cannot be broken down into simpler substances
the smallest particle of an element
the center of an atom
a positively changed particle in the nucleus of an atom
a neutral particle in the nucleus of an atom
a negatively changed particle
an electron in the outermost energy level of an atom
the properties of elements tent to repeat in a regular an pattern
a horizontal row of elements
another word for family
a quantity equal to one 1/12 the mass of a carbon
the number of protons in the nucleus of an atom
the element that are usually poor conductors
the element that are good conductors of heat and electricity
an element that has properties of both a metal and non-metal
any atom that have the same number of protons but a different number of neutrons
another word for atomic mass unit
Smallest unit of an element
Number of protons in the nucleus of an atom
Average of atomic masses of naturally occurring isotopes that make an element
The ease of which an element reacts to another element
Negatively charged particle that moves inside the nucleus of an atom
Area around the nucleus occupied by electrins
A vertical column in the periodic table
Elements that are in a group of 17 in the periodic table
Atoms of the same element with different numbers of neutrons
The sum of protons and neutrons in an atom
Has properties of metals and non-metals
Elects whose atoms commonly have three or fewer electrons in out energy level
A particle with no charge
Element in a group of 18 on the periodic table
Element with 5 or more electrons in out energy level
The center of an atom containing neutrons and protons
Arrangement of the chemical elements in rows according to atomic numbers
The horizontal rows of the periodic table
A positively charged particle in the nucleus of an atom
The elements in groups of 3 through 12 on the periodic table
Number of protons in the nucleus of an atom
A stable subatomic particle
A cloudlike group of electrons
A substance consisting of atoms which all have the same number of protons
The time required for a quantity to reduce to half its initial value
Any one of various forms in which the atoms of a chemical element can occur
The total number of protons and neutrons in a nucleus
A subatomic particle of about the same mass as a proton but without an electric charge
A very small particle of matter that is part of the nucleus of an atom and that has a positive electrical charge
A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
An element or substance that is not a metal
A nonmetal that can combine with a metal to form an alloy
The smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule