Unit 1 Quiz Review Flashcards
Large chain like molecule built from many small molecules
Polymer
Study of matter and its transformations
Chemistry
Anything that occupies space and has mass
Matter
Substances composed of one type of atom
Elements
Independent of the amount of substance present
Intensive property
Examples of intensive property
Color, hardness, malleability like melting temp, density
varies with the quantity of the substance present
Extensive property
Density equation
D = M / V
Celsius to Kelvin equation
K = C + 273.15
Smallest particle of an element that retains the characteristic chemical properties of that element
Atom
Properties can change near the atomic scale, however, as shown by recent advances in nanotechnology
Physical
A pure substance composed of two or more elements
Chemical compound
What are some examples of chemical compounds?
H2O, NaCl, Sugar
Can be observed and measured without changing the composition of a substance
Physical properties
What are some examples of physical properties?
Color State of matter Melting point Boiling point Density Solubility Electric conductivity Malleability Ductility Viscosity
1 cm ^3 =
1 mL
Kelvin to Celsius equation
K-273.15
Depend on the amount of substance present
Extensive properties
Do not depend on the amount present
Intensive
Identify of the substance is preserved
Physical changes
Substance is transformed into one or more substances
Chemical
Rigid, have fixed volumes and shapes
Solids
Definitive volume but no fixed shape
Liquids
No fixed volume or shape
Gas
Volume of a given substance (blank) with decreasing temperature
Decreases
Decreasing the temperature (blank) the density
Except?
Increases
Water
Useful for describing and understanding physical states of matter
Kinetic molecular theory
All matter consists of (blank) which are (blank)
Small particles, constant motion
Method of converting from one system of units to another
Dimensional analysis
1 megaton
1 x 10^6 tons
1 kilometer
1 x 10^3 m
1 decimeter
1 x 10^-1 m
1 centimeter
1 x 10^-2 m
1 millimeter
1 x 10 ^-3 m
1 micrometer
1 x 10^-6 m
1 nanometer
1 x 10^-9 m
1 picometer
1 x 10^-12 m
Mega
M
10^6
Kilo
k
10^3
Deci
d
10^-1
Centi
c
10^-2
Milli
M
10^-3
Micro
u
10^-6
Nano
n
10^-9
Pico
p
10^-12