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A change in which the composition of a substance stays the same. Usually (but not always) easily reversible.
ex: change of state, breaking, crushing |
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A change in which the composition of a substance changes. Not easily reversed.
ex: rusting, burning, foaming or bubbling |
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Grams over cubic centimeter
Kilograms over liter
(several other posibilities)
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A measure of the gravitational force on an object.
Varies depending on where the object is in relation to Earth.
Measured using a spring scale. |
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A measure of the amount of matter in an object.
Always constant for an object no matter where it is located.
Measured using a balance. |
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| A measure of the size of a body or region in three-dimensional space. |
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The ratio of the mass of a substance to the volume of the substance.
A substance in which this property is greater will sink.
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| Finding volume of a regular object |
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Definition
Use a ruler to measure the lengths of the dimensions.
Find the appropriate formula for the shape (ex: v = l X w X h) and solve. |
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| Finding volume of an irregular object |
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| Measure the volume of water that the object displaces. (Use a graduated cylinder and submerge the object to see what the change in the water's volume is.) |
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Water, air, a rock
(anything that has mass and takes up space) |
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Examples of non-matter
(things that are NOT matter) |
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Sunlight, sound, love
(anything that doesn't have mass or take up space) |
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How Many significant digits?
0.0307 |
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How Many significant digits?
430.0 |
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| Write a number with 2 significant digits. |
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Definition
Examples:
6,200
5.6
0.00097 |
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