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?
The study of matter
Occupies space and has mass
Solid, liquid, gas
Pure substances consisting of only one kind of atom in each molecule.
Pure substances consisting of two or more atoms in each molecule
Chart of elements organized according to their atomic structure
The part of the atom containing the protons and neutrons
Positive particle of an atom. The number of these determines what kind of element it is
Neutrally charged particle found in the nucleus and has mass
Negatively charged particle outside the nucleus
Donated electrons form charged particles called ions to stick together
Shared electrons hold atoms together.
A distinct group of atoms bonded together
The smallest unit of an element
Shows how atoms in a molecule are located and connected
Show the number and type of atoms in a molecule
The ability to do work
A protein molecule or organic molecule used as a catalyst
Substances that affect the rate of a reaction but are not changed themselves. Also may start or stop a reaction from occurring.
The metric unit used to weigh of a bar of gold
Substances that enable enzymes to work properly.
Small amount of liquid chemicals would be measured using this metric unit.
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
Negative charge of an atom
Center part of an atom that holds protons and neutrons
Positive charge of an atom
Neutral Charge of an atom
Area in an atom where an electron is found
Substance that cannot be broken down into smaller parts
Number or protons in an atom
Atoms of the same element that have different amounts of neutrons
Average mass of an element's isotopes
Chart that shows the elements
When 2 or more elements combine
Atom that is no longer neutral because of gained/lost electrons
Chemical bond by sharing of valence electrons
Chemical Reaction that releases energy
Chemical reaction that absorbs energy
Substance that speeds up a chemical reaction
Symbol for Iron
Vertical columns on the Periodic Table are called
Horizontal rows on the Periodic Table are called
Bonding which results from the electrical attraction between cations and anions
when two atoms share a pair of electrons
Covalent bond when electrons are not shared equally
the simplest structual unit of an element
compound that consists of positive and negative ions
in a chemical compound the max amount of electrons is 8 in the highest energy level
A charged group of covalently bonded atoms
bonding that results from the attraction between metal atoms and the surrounding sea of electrons
ability of a substance to be hammered into thin sheets
ability of a substance to be drawn or pulled through a small opening to make a wire
simplest collection of atoms from which an ionic compound's formula can be established
covalent bond when one pair of electrons is shared between two atoms
energy required to break a chemical bond and form isolated atoms
bonding that has an eneven distribution of charge
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.
A change in matter that produces new substances with new properties. (2words)
New substances produced in a chemical reaction.
Substances that react together in a chemical reaction.
A system for organizing elements into columns and rows based on their properties. (2words)
Rows in the periodic table.
Columns in the periodic table.
A group of letters and subscript numbers that represent the make-up of a chemical compound. (2words)
An atom that has an electrical charge, either positive or negative.
A compound that forms between a metal and a non-metal after electrons are transferred.
A compound that forms between non-metals as they share electrons.
A subatomic particle found in the nucleus of an atom. It has no charge.
A positively charged subatomic particle found in the nucleus of the atom.
A negatively charged subatomic particle that orbits the nucleus of an atom.
Refers to either the outer orbital of an atom or the electrons found in the outer shell.
A reaction in which two or more reactants combine to produce a new product.
A reaction in which one compound breaks down into two or more simpler compounds.
A reaction in which one element takes the place of another element in a compound. (2words)
A reaction in which the metal ions of two different compounds exchange places. (2words)
The smallest unit of an element.
A compound that tastes sour, corrodes metal and tissue, and turns blue litmus paper red.
A substance that changes colour when added to an acid or a base.
A compound that tastes bitter, feels slippery, corrodes tissue, and turns red litmus paper blue.
The number in front of a product or reactant in a balanced chemical equation.
Ability to conduct (transfer) electricity.
Law describing the fact that the total mass and number of atoms is the same before and after a reaction. (3words)
A reaction between an acid and a base that produces salt and water.
Elements on the left side of the periodic table. They are malleable, shiny, conductive, and solid at room temperature.
Elements on the right side of the periodic table. They are not malleable, not conductive, and exist in a number of states at room temperature.
A pure substance that cannot be broken down.
A pure substance that contains two or more different elements.
are the building blocks of matter
Neutrons and Protons are located here
Positively charged particles
Particles that have no charge
Negitively charged particles
pure substances that cannot be broken down into other substances by physical or chemical means
Atoms of the same element that have different numbers of neutrons
A pure substance formed when two or more different elements combine
chemical bond that forms when electrons are shared
a compound in which the atoms are held together by covalent bonds
an electrical attraction between two oppositely charged atoms or groups of atoms
process by which atoms or groups of atoms in substances are reorganized into different substances
substance that lowers the activation energy needed to start a chemical reaction
biological catalyst that speed up the rate of chemical reactions in biological processes
specific location where a substrate binds on an enzyme
molecules that have an unequal distribution of charges
the electrostatic attraction
the substance that is dissolved in the solvent
substance in whih another substance is dissolved
anothe name for homogeneous mixture
atom shares 2 or more electrons
atom(s) that has become electrically charged
made of more than one atom
2 or more elements chemically combined
oppositely charged attracted ions
electrons in the highest energy level
composed of molecules
dots around and element
shininess, malleability, ductility
formed when 2 atoms share electrons
three dimensional pattern
lacks properties of metals
two or more atoms