Card Set Information
Chemistry I for Lee College Miller
What is matter?
Matter is anything that has mass and takes up volume
What are the two categories of classifying matter?
Pure and Mixture
What is an element? Provide an example.
An element is the simplest unit of which everything is made. AN example would be C or Au.
What is a compound? Provide an example.
A compound is two or more elements in combination. An example would be O
What is homogenous? Provide example.
Homogenous means uniform/same throughout. An example would be freshly brewed coffee or wine.
What is heterogenous? Provide example.
Heterogeneous means not uniform/ same throughout. An example would be Lucky Charms cereal or vignette salad dressing.
What is physical change?
A physical change that alters the state or appearance, is easily revisable, phase change, not chemical reaction , making a solution or dissolving something.
What is Chemical change?
A chemical change is not revisable, their is a change in composition of matter (breaking bonds), basically a reaction. Evidence may include temperature, change of color, or new visible substance.
What is physical property?
Physical property can be measured/observed without a chemical change. These are typically the properties we can easily/directly measure (height, mass, etc..)
What is chemical property?
A chemical property requires a chemical change in order to measure/observe (like flammability or acid). Destroys sample in testing typically.
What is Intensive property?
An intensive property is independent of how much material is considered.....constants. For example density, melting point, and energy is intensive.
What is Extensive property?
Extensive property depends on how much material..... additive.. For example, mass is extensive.
Their are how many systems of units of measure are there and what are their names?
English System (lbs, in)
Metric System (cm, L)
international system (SI)
What is Avogadro's number?
6.022 x 10
1 m = ?
1 m= 39.37 in
1 kg= ?
1 kg = 2.20 lbs
What is the boiling point for water?
Fahrenheit = 212*F
What is the freezing point for water?
What is the absolute zero for water?
What is the conversion formula for Celsius to Kelvin?
*C + 273.15 = K
What is density? What is the formula for density?
The density of an object is the mass of the object compared to its volume. D= M/V
g/mL is equivalent to what other units?
What is sig. figs?
Significant figures are the number of digits recorded and reflect confidence in measurement/calculation.
What are the rules for determining if a digit is significant?
*all non-zero #'s are significant
*any zero between non zero # is significant
*any zero to the left of a 1st non zero is NOT significant
nonzero- if their is a decimal then yes..... if their is no decimal then no
What is scientific notation used for?
Scientific notation is useful for lg and am numbers and all digits recorded are significant.
2.5 x 10
In multiplication/division what is the rule for sig. figs?
The result has same number of sig. fig as factor with fewest sig fig.
In addition/subtraction what is the rule for sig figs?
The result has the same number of digits after the decimal as quantity with fewest.
What is dimensional analysis?
Dimensional analysis is the conversion between units
What is the general approach to dimensional analysis?
given quantity x (conversion/factor) x (conversion/factor) = answer
In the metric system what is the prefix and what is the base unit of mL?
m is the prefix that stands for mill
L is the base unit that stands for Liter
Name the common base units of the metric system
What is the "M" in the metric system?
"M" is the symbol for the prefix for Mega and is the power 10
What is the "k" in the metric system?
"k" is the symbol for the prefix for kilo and is the power 10
What is the "d" in the metric system?
"d" is the symbol for the prefix for Deci and is the power 10
What is the "c" in the metric system?
"c" is the symbol for the prefix centi and is the power 10
what is the "m" in the metric system?
"m' is the symbol for the prefix milli and is the power 10
What is the "
in the metric system?
" is the symbol for the prefix macro and is the power 10
What is the "n" in the metric system?
"n" is the symbol for the prefix nano and is the power 10
What is the "p" in the metric system?
"p" is the symbol for the prefix pico and is the power 10
1 kg= ? g
1 kg= 1000g
100 cm = ? m
100 cm= 1 m
1000 mL = ? L
1000 mL= 1 L