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42 Cards in this Set

  • Front
  • Back
What type of measurement is numerical measurement?
quantitative measurement
What type of measurement is descriptive measurement?
qualitative measurement
Written as a product of a number between 1.00 and 9.99 and 10 raised to some power?
scientific notation
A reflection of how near the actual measurement the taken measure is?
Accuracy
A reflection of how close multiple measurements are to one another?
Precision
A unit in chemistry is called?

It is often used to discuss the quantity of a substance
Mole
The mass in grams of a substance?
Molar mass
Anything that takes up space and has mass?
matter
T/F mass is NOT the same as weight?
True
Quantity of matter an object has?
Mass
Substances that cannot be broken into simpler types of matter are called?
elements
The smallest part of an element that still retains all the original properties of an element?
atom
Central core of atom?
nucleus
Number of protons in the nucleus of an atom?
atomic number
T/F in most atoms there are an equal number of protons and electrons so the overall charge is 0?
True
Electrons orbit the nucleus in?
energy levels
When atoms of one element are combined with atoms of another element ____ are formed?
molecules
elements combine with other elements to form?
compounds
To combine, atoms undergo _______ to come to a stable state
chemical reactions
A bond where two or more atoms share one or more pairs of electrons?
Covalent bond
A bond where an electron from one atom is transferred to an atom of another element?
Ionic bond
An atom with an electrical charge?
ion
An attraction between the positive and negative ion is the ______?
Ionic bond
Energy that can be used for work w/i a system?
free energy
A chemical bond that yields a net release of free energy?
Exergonic reaction?
A reaction that yields a net absorption of free energy?
Endergonic reaction
A chemical substance that decreases the amount of activation necessary for a chemical reaction?
catalyst
Chemical reactions that result in transference of electrons?
reduction-oxidation reactions (redox reactions)
Reaction that occurs when atom loses one or more electrons resulting in a positive charge?
oxidation reaction
Reaction that occurs when an atom gains one or more electrons, resulting in a negative charge?
reduction reaction
Why does hydrogen gas exist at H2, and never just H?
It is unstable on its own
Energy of motion?
Kinetic energy
Theory that states particles in all forms of matter are constantly in motion?
Kinetic theory
Result of billions of particles colliding with an object simultaneously?
gas pressure
An empty space with no particles and no pressure?
vacuum
Forms when the temperature of the gas lowers enough for condensation to occur?
liquid
A liquid changed into a gas?
vaporization
A liquid changed into a gas without boiling?
evaporation
forms when the temperature lowers even further?
solid
Particles that make up a structure are in an orderly, repeating, 3d pattern?
crystal lattice
Substances change from solid to liquid (through ___________) and then to gas (through ________)
melting, vaporization
Process when solid changes directly into gas w/o going through a liquid stage?
sublimation