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Cheetah13
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What is matter?
Matter is anything that has mass and takes up volume
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What are the two categories of classifying matter?
Pure and Mixture
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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.
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What is a compound? Provide an example.
A compound is two or more elements in combination. An example would be O2 or H2O.
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What is homogenous? Provide example.
Homogenous means uniform/same throughout. An example would be freshly brewed coffee or wine.
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What is heterogenous? Provide example.
Heterogeneous means not uniform/ same throughout. An example would be Lucky Charms cereal or vignette salad dressing.
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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.
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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.
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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..)
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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.
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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.
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What is Extensive property?
Extensive property depends on how much material..... additive.. For example, mass is extensive.
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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)
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What is Avogadro's number?
6.022 x 1023 = NA
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What is the boiling point for water?
Fahrenheit =
Celsius=
Kelvin=
- Fahrenheit = 212*F
- Celsius= 100*C
- Kelvin= 373*K
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What is the freezing point for water?
Fahrenheit =
Celsius=
Kelvin=
- Fahrenheit=32*F
- Celsius= 0*C
- Kelvin= 273*K
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What is the absolute zero for water?
Fahrenheit=
Celsius=
Kelvin=
- Fahrenheit= -459*F
- Celsius= -273*C
- Kelvin= 0*K
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What is the conversion formula for Celsius to Kelvin?
*C + 273.15 = K
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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
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g/mL is equivalent to what other units?
g/mL= g/cm3=cc
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What is sig. figs?
Significant figures are the number of digits recorded and reflect confidence in measurement/calculation.
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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
- *zero after nonzero- if their is a decimal then yes..... if their is no decimal then no
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What is scientific notation used for?
Scientific notation is useful for lg and am numbers and all digits recorded are significant.
2.5 x 103=
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In multiplication/division what is the rule for sig. figs?
The result has same number of sig. fig as factor with fewest sig fig.
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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.
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What is dimensional analysis?
Dimensional analysis is the conversion between units
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What is the general approach to dimensional analysis?
given quantity x (conversion/factor) x (conversion/factor) = answer
ratio= 1
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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
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Name the common base units of the metric system
- g= gram
- l=liter
- s=seconds
- m=meter
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What is the "M" in the metric system?
"M" is the symbol for the prefix for Mega and is the power 106.
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What is the "k" in the metric system?
"k" is the symbol for the prefix for kilo and is the power 103.
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What is the "d" in the metric system?
"d" is the symbol for the prefix for Deci and is the power 10-1.
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What is the "c" in the metric system?
"c" is the symbol for the prefix centi and is the power 10-2
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what is the "m" in the metric system?
"m' is the symbol for the prefix milli and is the power 10-3
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What is the "m" in the metric system?
"m" is the symbol for the prefix macro and is the power 10-6
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What is the "n" in the metric system?
"n" is the symbol for the prefix nano and is the power 10-9
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What is the "p" in the metric system?
"p" is the symbol for the prefix pico and is the power 10-12
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1000 mL = ? L
1000 mL= 1 L
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