Density

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Density

How heavy something is for its size

Mass

Amount of MATTER in an object

Volume

A large quantity or total MASS of an object

Matter

anything that has mass or volume

Compactness

being closely packed (how close or far away the atoms are)

Regular solid

a 3 dimensional shape that has a formula

Irregular solid

a 3 dimensional object without uniform sides

Water displacement

When an object is placed in water and pushes the water out of the way

Solid

Molecules are closely packed (not much movement)

Liquid

Atoms are not as closely packed, they can flow easily (has no definite shape)

Gas

Molecules are flying in every direction, not packed at all

Buoyancy

Water and air push up on objects

Grams

A metric unit of weight and mass

Milliliters

A metric unit of volume

Cubic centimeters (cm³)

A metric unit of volume

Density formula

D= m/v (m=mass…v=volume)

High mass example

Iron

Low mass example

Aluminum

High volume example

Hot balloon (molecules have high energy, more spread out)

Low volume example

Underwater balloon (molecules are closer together)

State change

most substances will have a volume change as they go from solid, liquid, and gas. (astronomy)

Temperature change

Heat expands substances (V=decreased density, cause rising) (Ex. Meteorology)

Pressure

Pressure compacts fluids (gas) (Ex. geology)

Dissolved solids

Adding more mass than volume (Ex. oceanography)

Ice is ____ dense than water

Less

Lower density ~ ______

Lower mass or higher volume

Density is a ____

RATIO!!

Higher density ~ _____

Higher mass or lower volume