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Chemistry : Density
ACS Chapter 3
Term | Definition |
---|---|
Density | property of an object that causes an object to feel heavy for its size |
Density | amount of matter in an object |
Density | depends on mass and volume |
mass | measured in grams |
volume | measured in cm cubed, or mL |
Volume | mass x length x width |
Density formula | mass/volume |
number of atoms or molecules that make up a substance | Density |
A substance with a greater density will always | have a greater mass |
Mass | amount of matter in an object |
Weight | measure of the force of gravity pulling down on the object |
3 properties which effect density | size, mass and arrangement of molecules of a substance |
Water displacement | use of water increase to determine the amount of volume of irregular shaped objects. |
A density >1g/mL | sink |
A density <1 g/mL | float |
Water's density | 1.0 g/mL |
An increase in temperature changes an objects density by | because particles are moving faster, therefore taking up a greater volume. Which indicates a decrease in density of the object. |
A decrease in temperature changes an objects density by | particles moving slower, therefore decreasing the volume. Which indicates an increase in density of the object. |