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Vocabulary
Atomic Structure
Physical & Chemical Properties
Element, Mixture, or Compound
Bonding
100
The number of protons in the nucleus of an atom.
What is the atomic number?
100
A subatomic particle with a positive electrical charge.
What is a proton?
100
A characteristic that is observable in a substance without changing the chemical composition of the substance.
What is a physical property?
100
Iron is classified as this when choosing between a mixture, compound, or element.
What is the element Iron?
100
A force that holds together the atoms that make up a compound.
What is a chemical bond?
200
The smallest complete unit of a compound.
What is a molecule?
200
A subatomic particle with no electrical charge.
What is a neutron?
200
This state of matter has the fastest moving particles.
What reletive speed do gas particles move?
200
A material that contains two or more substances that are not chemically combined.
What is a mixture?
200
A bond based on the attraction between atoms that share electrons.
What is a covalent bond?
300
An arrangement of electrons within the electron cloud of an atom.
What are energy levels?
300
A subatomic particle with a negative electrical charge.
What is an electron?
300
A characteristic that describes how a substance interacts with other substances to produce different kinds of matter.
What is a chemical property?
300
This is a mixture that is uniformly dispersed in another substance.
What is a solution?
300
A bond in which electrons are transferred from one atom to another.
What is an ionic bond?
400
The region of space around the nucleus of an atom.
What is the electron cloud?
400
The maximum number of electrons that fit in the outer valence shell of an atom.
What does the octet rule of eight electrons state?
400
Matter that has a definite shape and is make up of tightly packed particles.
What is a solid?
400
Smog or low lying air pollution is concidered this.
What is a mixture of dust and chemicals?
400
The type of bond that joins the hydrogen and oxygen atoms in a water molecule.
What is an example of a covalent bond?
500
An atom of an element that has the same atomic number but different atomic mass than another atom of that element.
What is an isotope?
500
The first energy level will only fit this many electrons.
What energy level holds only two electrons?
500
Between water and ice this substance has tighter packed atoms.
What is the molecular space of water?
500
A substance that results when the atoms of two or more elements are chemically combined.
What is a compound?
500
The formation of Na+ and Cl- to produce sodium chloride (table salt) results from this atom's electron movement.
When does soduim (Na) lose and electron and chlorine (Cl) gain an electron?