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8 Cards in this Set

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what are the 4 characteristics of mass and weight?
compare and contrast them
MASS IS...
•a measure of the amount of matter in an object
•always constant for an object no matter where the object is in the universe
•measured with a balance
•expressed in kilograms, greams, and milligrams

WEIGHT IS...
•a measure of the gravitational force on an object
•varied depending on where the object is in relation to the Earth (or any other large body in the universe)
•measured with a spring scale
•expressed in newtons

COMPARE & CONTRAST
•weight does not have to do with matter
•mass is constant no matter where it is in the universe but weight is different depending on where you are
•weight is measured with a spring scale while mass is measured with a balance
•weight is expressed in Newtons while mass is expressed in grams, kilograms, and milligrams
what is the formula for volume?
length x width x height
how would you find the volume of an irregular object?
volume by displacement
what is the formula for density, mass, or volume?
D = m/V
identify chemical and physical properties
chemical properties are properties of matter that describe a substance based on its ability to change into a new substance with different properties

physical properties are properties of matter that can be observed or measured without changing the identity of the matter
identify chemical and physical changes.
CHEMICAL CHANGES: the process of changing one or more substances into new substances with different properties

PHYSICAL CHANGES:a change that affects one or more physical properties
Name the factors that affect density
temperature and pressure
explain how temperature and pressure affect density.
TEMPERATURE:
•when the temperature increases, the colume increases and the density will decrease
•when temperature decreases, the colume will decrease and the density will increase

PRESSURE:
•when pressure increases, the volume decreases then density will increase
•when pressure decreases, the colume increases and the density will decrease