Page 156 - Science Course 1 (Book 1)

Mo5-L1b: What are the Properties of Matter?

Mass is the amount of matter in an object. Volume of a rectangular-shaped Solid
Height If solid has a rectangular
shape, you can find its volume
by multiplying its length, its
width, and its height together.
A common unit of volume for
a solid is the cubic centimeter.

Width
Length

Density is the mass per unit volume of a substance.
Mass
A balance measures an object’s mass by comparing Density is constant for a given substance, regardless
it to the known mass of the slides on the balance. of the size of the sample.
Common units for measuring mass are kilogram (kg)
and the gram (g).

Weight is the gravitational pull on the mass of an
object.
Weight depends on the location of an object, but its
mass does not. High Density Low Density
particles are packed particles are loosely packed
together = not much = more space between.
space between.
( Will float more easily
( Will sink easily, e.g. e.g. Wood )
Iron nail )

Density Equation
D= m
Density (in g/mL) = mass (in g) V
volume (in mL)
Mass = 120kg Mass = 120kg To find the density of the rock, first determine the
Weight = 120x10 Weight = 120N mass and the volume of the rock:
= 1200N
mass: m = 17.5 g
Volume depends on the amount or size of the volume: v = 73.5 mL - 70.0 mL = 3.5 mL
sample of matter.
LIQUID Then, divide the mass by the volume:

SOLID D = 17.5 g = 5.0 g/mL
GAS 3.5 mL

Shape of Container Density Calculation
Free Surface Density can be calculated using the density equation.
Fixed Volume The common units of density are grams per milliliter
(g/mL) or grams per cubic centimeter (g/cm³) .
Holds shapes Shape of container 1 mL = 1 cm³.
Fixed Volume Volume of container
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