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Science
The process of learning about the natural world through evidence and logic
Scientific Law
A statement that describes what always happens under certain conditions.
Scientific Theory
A broad explanation that is widely accepted because it is supported by a great deal of evidence. Ex.(Big Bang Theory, Atomic Theory, etc. )
Chemistry
The branch of science that studies the properties of matter and energy and how they interact mostly at the level of atoms and molecules
Physical Chemistry
The study of macroscopic properties, atomic properties, and phenomena in chemical systems
Organic Chemistry
A branch of chemistry that involves study of properties, structure, reactions and compositions of compounds containing carbon and hydrogen, also called organic compounds
Biochemistry
The study of the chemical processes that occur in living things.
Analytical Chemistry
The study of the composition of matter.
Inorganic Chemistry
the study of chemicals that do not contain carbon (non-living things like pencil, paper, etc.)
Inductive Reasoning
When you draw a general conclusion based off of many clues or pieces of evidence
Scientific Method
The process of objectively getting facts through testing and experimentation
Question, 2. Research(if needed), 3.Hypothesis,
Experiment, 5. Data, 6. Conclusion
Observation
The act of knowing and recording something
Mass
The amount of matter an object contains
Volume
The amount of space an object takes up
Physical Property
A characteristic of a pure substance that can be observed without changing it into another substance
Extensive Property
A property that depends on the amount of matter in a sample
Intensive Property
A property that depends on the type of matter in a sample, not the amount of matter
Physical Change
A change in a substance that does not involve a change in the identity of the substance
Solid
Definite shape and volume
Liquid
A state of matter that has no definite shape but has a definite volume.
Gas
A state of matter with no definite shape or volume
Vapor
Describes the gaseous state of a substance that is generally a liquid or solid at room temperature
States of Matter
the physical forms of matter, which include solid, liquid, and gas
Substance
A single kind of matter that is pure and has a specific set of properties.
Mixture
A combination of two or more substances that are not chemically combined
Solution
A homogeneous mixture of two or more substances
Homogeneous Mixture
A mixture in which substances are evenly distributed throughout the mixture
Heterogeneous Mixture
A mixture in which different materials can be distinguished easily
Phase
Any part of a sample with uniform composition and properties
Chromatography
A technique that is used to separate the components of a mixture using a moblie and stationary phase based on differences in polarity and affinity.
Distillation
A process that separates the substances in a solution based on their boiling points
Filtration
A process that separates materials based on the size of their particles.
Element
A pure substance made of only one kind of atom
Molecule
A group of atoms bonded together
Chemical Change
A change in matter that produces one or more new substances
Chemical Property
A characteristic of a pure substance that describes its ability to change into different substances
Chemical Reaction
the process by which one or more substances change to produce one or more different substances
Chemical Symbol
A one or two letter representation of an element
Flammability
A material's ability to burn in the presence of oxygen
Accuracy
A description of how close a measurement is to the true value of the quantity measured.
Conversion Factor
a ratio of equivalent measurements used to convert a quantity from one unit to another
Precision
a measure of how close a series of measurements are to one another
Derived Quantities
formed from a combination of other measurements
Accepted Value
a quantity used by general agreement of the scientific community
Density
Mass of a unit volume of material substance
Experimental Value
the value measured in the lab
Giga
10^9 x 1,000,000,000 -----------1 billion
Error
Differences between observed value and what is true in nature
Mega
10^6 x 1,000,000 ----------------1 million
Percent Error
Difference between accepted value and experimental value divided by the accepted value
Significant Figures
All the digits that can be known precisely in a measurement, plus a last estimated digit
Hecto
10^2 x 100 1 hundred
Scientific Notation
Number of important single digits in the coefficient of an expression in scientific notation
Deka
- 10^1 x 10 ten
International System of Units
Global standard for expressing the magnitudes or quantities of an important natural phenomena
Deci
10^-1 x 0.1 ---------------1 tenth
English System
The foot-pound-second system of measurement
centi
10^-2 x 0.01 --------1 hundredth
Metric System
System of measurement that uses the meter, liter, and grams as base unit of length, capacity, weight, respectively
Milli
10^-3 x 0.001 ----------- 1 Thousandth
Dimensional Analysis
Fundamental analysis of measurement
Micro
10^-6 x 0.000, 001 ---------- 1 millionth
Temperature
A measure of how hot or cold something is.
Nano
10^-9 x 0.000,000,001 ----------billionth
Kelvin Scale
A scale of temperature with absolute zero as zero
Pico
10^-12 x 0.000,000,000,001 ------------Trillionth
Celsius Scale
A scale which is 0 for the freezing point and boiling point for the 100 point
Absolute Zero
-273.15 degrees Celsius, or -459.67 Fahrenheit
Atom
Smallest particle of an element
Nucleus
Center of an atom
Proton
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Electron
A subatomic particle that has a negative charge
Atomic Number
The number of protons in the nucleus of an atom
Mass Number
The sum of the number of neutrons and protons in an atomic nucleus
Note 
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