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17 Cards in this Set

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  • Back
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Atom
The smallest partical of an element that can be identified with than element
Consists of protons and neutrons in a nucleus surrounded by electrons
Atomic Number
Number of protons in the nucleus of an atom
Number of ? in the ? of an ?
Brownian Motion
Random movement observered upon microscopic particles suspended in a fluid medium
? movement observered upon microscopic ?
Chemical Formula
A description that uses numbers and symbols of elements to describe the proportions of elements in a compound or reaction
A description that uses ? and ? of elements to describe the ? of elements in a ? or reaction
Compound
A chemical substance made of atoms of two or more different elements combined in a fixed propotion
A ? substance made of ? of two or more different ? combined in a fixed propotion
Element
A substance made of only one kind of atom
how are these things all alike? - Hydrogen, carbon, oxygen, and nitrogen
Group
Elements in the same colum of the periodic table
? in the same colum of the ? table
Ion
An atom (or group of atoms bound together)with a net electric charge, which is due to the loss or gain of electrons
An ? with an electric charge, which is due to the ? or ? of ?
Isotope
A form of an element having a perticular number of neutrons in the nuclei of its atoms.
A form of an ? having a perticular ? of neutrons in the ? of its ?.
Molecule
Two or more atoms of the same or different elements bonded to form a larger particle.
Two or more ? of the same or different ? bonded to form a ? particle.
Neutron
An electronicly neutral partical that is one of the two kinds of particals that compose an atomic nucleus
An ? neutral partical that is one of the ? kinds of particals that compose an ? nucleus
Nucleon
The principle building block of the nucleus; a neutron or a proton
The ? building block of the nucleus; a ? or a ?
Nucleus
The positively charged center of an atom which contains protons and neutrons and has almost all of the mass of the entire atom but only a tiny fraction of the volume
The ? charged center of an atom which contains ? and ? and has almost all of the ? of the entire atom but only a small fraction of the ?
Periodic Table
A chart that lists elements by atomic number and by electron arrangements so that the elements with simular chemical properties are in the same column
A chart that lists elements by ? and by ? so that the ? with simular ? properties are in the same column
Plasma
A 4th phase of matter in addition to solid, liquid, and gas. In plasma matter consists of positively charged ionsand free electrons
A 4th phase of ? in addition to ?, liquid, and gas. In ? matter consists of positively charged ? and ? electrons
Proton
A positively charged particle that is one of the two kinds of particles found in the nucleus of an atom
A ? charged particle that is one of the ? kinds of particles found in the ? of an atom
Shell Model of the Atom
a model in which the electrons of an atom are pictured as grouped in concentric shells around the nucleus
a ? in which the ? of an atom are pictured as grouped in ? shells around the ?