Test 1 - 8/25/16 Flashcards
The study of carbon and all its compounds
Organic chemistry
The study of _____ compounds which do not contain a CH bond; many _____ compounds are those which contain metals
Inorganic chemistry
The study of the chemistry of matter in the development of tools used to measure properties of matter
Analytical chemistry
The branch of chemistry that applies physics to the study of chemistry (includes the applications of thermodynamics and quantum mechanics to chemistry)
Physical chemistry
The study of chemical processes that occur inside of living organisms
Biochemistry
A measurement is a _____ observation consisting of two parts:
- ____
- ____
Quantitative; number; scale (unit)
What is the fundamental SI unit of mass
Kilogram (kg)
What is the fundamental SI unit of length
Meter (m)
What is the fundamental SI unit of time
Second (s)
What is the fundamental SI unit of temperature
Kelvin (K)
What is the fundamental SI unit of amount of substance
Mole (mol)
What is the fundamental SI unit of electric current
Ampere (A)
What is the fundamental SI unit of luminous intensity
Candela (cd)
Refers to the agreement of a particular value with the true value
Accuracy
List the 5 branches of Chemistry
Organic, Inorganic, Physical, Analytical, Biochemistry
Name the two main organizations of matter
Mixtures and pure substances
Name the two types of mixtures
Homogeneous (solutions)
Heterogeneous
Name two pure substances
Element and compound
What are the two parts of the solution
Solute (the one being dissolved)
Solvent (the one dissolving the solute)
Name a part of an element
Atom
Name two parts of an atom
Nucleus and electrons
Name two things inside the nucleus
Protons and neutrons
What are the four types of matter
Solid, liquid, gas, and plasma
Definite volume and shape; particles packed and fixed positions
Solid
Neither volume nor shape is definite; particles move around fast
Gas
Definite volume but indefinite shape; particles are close together but not fixed
Liquid
High temperatures; ionized phase as found on the sun
Plasma
What are the two properties of matter
Extensive and intensive
Does not depend on the amount of matter present
Intensive
Depends on the amount of matter present
Extensive
Give three examples of extensive properties
Volume, mass, and length
Give three examples of intensive properties
Melting point, boiling point, and density
____ is the second way to separate a mixture
Distillation
When separating a mixture, the components of a dye such as ink maybe separated by
Paper chromatography
How do you separate a compound
Through electrolysis of water
The number of protons or electrons; represented by the letter Z
Atomic number
Components must be separated by chemical means. With the application of electricity water can be separated into its elements
The process of electrolysis of water
The number of protons plus the number of neutrons
Atomic mass
The study of matter and out interactions
Chemistry
Made up of one thing
Pure substance
Made up of two or more things
Mixture
Part of something abstract, one that is essential or characteristic
Element
More than one element
Compound
Give an example of a homogeneous mixture
Sweet tea
A homogeneous mixture is…
The same throughout
Give an example of a heterogeneous mixture
Mud
A heterogeneous mixture is…
Not the same throughout
Variables that must be kept constant so as not to bias or influence the results
Control variable
The variable that changes as a result of the action taken by the scientist
Dependent variable
A predicted experimental outcome based on prior knowledge and experience
Hypothesis
The variable that is changed on purpose by the scientist
Independent variable
A mathematical equation that predicts how a physical phenomenon will behave
Scientific law
Data that is descriptive rather than numerical
Qualitative
A well tested explanation for why physical phenomenon occurs
Scientific theory
Data that is numerical
Quantitative
The measure of the distance from one point to another
Length
Any features of an experimental design that are changeable
Variable
The quantity of matter a body possesses
Mass
The degree of exactness of a measurement; described by the number of significant digits used to express the value
Precision
The metric system of units
SI system
Space occupied by quantity of matter
Volume
That which flows onward uniformly
Time
The effect of gravity on an object of a certain mass
Weight
Mass (g)/ unit volume (mL)
Density
Any simplified system used to represent a larger, usually more complicated system
Scientific model