notes gb lab 01 02 properties r us measuring matter
TRANSCRIPT
NotesNotes
Today we will: Observe different substances and record
your observations Identify and recognize General, Physical
and Characteristic properties of matter Describe how physical properties can be
used to gather information about a substance.
Physical Properties Color Conductivity Luster Odor Hardness Magnetism Shape Malleable Ductile
Properties of a substance that can be observed without changing the substance
Physical Properties may include but ar enot limited to: Color Texture Shape Conductivity Size Luster Hardness Odor
Red, blue , yellow, green or a mix of colors
How smooth or rough something feels to the touch
Round, jagged, square etc.
That which allows heat or electricity to pass through is considered “Conductive”
How large or small something is
Quality of light reflection Shiny or dull
How soft or hard a substance is. Can it easily be
scratched with a fingernail, a steel nail?
Describes the specific smell if any
The physical property of a substance that allows the substance to be hammered and shaped into sheets.
The physical property of a substance that allows the substance to be stretched into a wire
NotesNotes
The student will: Make accurate measurements using the
International System of Units (SI-metric) Select and use appropriate tools for
gathering data
The student will: Use mathematical concepts to collect,
analyze and report data Calculate mass, volume of substances Investigate and determine physical
properties of matter
General PropertiesCharacteristic PropertiesMassVolumeMeanMedianModeRange
Properties like mass and volume that all substances have.
They do not help with identification of the substance
Everything has mass (M) and volume (V)
The amount of matter in an object or substance▪ Measured with a
triple-beam-balance▪ Measured in grams
(g) or Kilograms (Kg)
The amount of space something takes up Liquids are measured
in milliliters (mL) Solids are measured in
cubic centimeters (cm3)
To calculate the volume of a regular solid such as a cube:Measure the length (l) the height (h)
and the width (w). Then multiply l x h x w to get the
volume
To find the volume of an irregular solid use the water displacement method using a graduated cylinder
Properties unique to a substance. They help identify the substance▪ Density Boiling Point▪Melting Point Freezing Point▪ Flammability Combustibility▪ Reactivity
Mr. Kershes ……….
NOT!
The average in a series of numbers when they are first added and then divided by the number of addends
6+8+5+4+2+10 +7= 4242/7 = 6Mean = 6
The middle number in a series of numbers when they are put in order from lowest to highest
6, 8, 5, 4, 2, 10 , 7 2, 4, 5, 6, 7, 8, 10 6 is the median number
The most frequently repeated number/value in a series of numbers
2, 4, 5, 6, 6, 6, 7, 8, 106is the Mode
The difference between the highest and the lowest numbers in a series of numbers It can be written as
Lowest – Highest or as the numerical difference between the lowest and highest numbers.
2, 4, 5, 6, 7, 7, 7, 8, 10▪ Range Lowest t o
Highest 2 – 10▪ Range difference =
8