Matter 4/3

Matter

I. Matter

a. Matter is what the universe is made

out of (atoms)

b. Matter is anything that has mass

and volume

II. Physical Properties

a. characteristics of matter that can

be observed without changing the

identity of the substance

• Color • Freezing Point • Boiling Point

What’s in the bag?

1. Specific Properties

a. colorb. odorc. sized. shapee. texturef. hardness

Physical Properties?

2. General Properties

a. mass

b. volume

c. density

d. weight

III. Mass

a. mass- the amount of matter in an

object

** it does not change from one place to another

b. Mass and Inertia

1. inertia- the resistance of an object

to changes in motion

2. the more mass an object has, the

greater its inertia

More mass = greater inertia

3. mass is measured in grams (g)

and kilograms (kg)

1000mg = 1 g

1000g = 1 kg

A dime is about 1 gram

Volume

III. Volume

a. volume

- the amount of space an

object takes up

1. Solids are measured in cubic

centimeters or centimeters cubed

(cm )

2. Volume = length x width x height

V = L x W x H

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V = L x W x H4cm x 6cm x 5cm = 120cm

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3. Liquids are measured in milliters (ml) and liters (L)

4. 1000ml = 1 liter 1000 liters = 1 kiloliter

3. 1ml = 1cm

1ml

3

1cm = 1ml3

Examples =

15 cm = ______ ml

25 ml = ______ cm

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Examples =

15 cm = 15 ml

25 ml = 25 cm3

Density

IV. Density

a. density-

a measure of how much mass is contained in a given

volume of an object

1. in other words, it’s how much matter is

contained in a certain amount of space

Which is more dense?

Formula: Be able to Solve

B. Density = mass

volume

B. Density = mass (g)

volume (ml or cm )

D = m

v

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c. In order to compare the masses of two objects, the objects must be equal in volume.

Examples: if an object has a mass of 50g and a volume of 10cm3, what is its density?

D = m v

D = 50g/10cm3 D = 5g/cm3

Example: If a liquid has a volume of 5ml and a mass of 10 g, what is its density?

D = m/v

D = 10g/5mlD = 2g/ml

Example: If the density of a diamond is

3.5g/cm and its volume is

.5cm , what is its mass?

mass = d x v

mass = 3.5g/cm3 x .5cm3

mass = 1.75g

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*d. The density of fresh water is 1g/ml - if an object has a density less that 1g/ml it will float in fresh water

- if the object has a density greater than 1 g/ml It will sink in fresh water

Weight4/20/12

V. Weight

A. Weight- The measure of the force of gravity between objects

1. gravity- the force of attraction between objects

2. the greater the mass of an object the greater its gravitational force

3. Your weight is a direct measure of the planet’s force pulling you toward it center.

B. Weight = gravity x mass

Weight = 9.8m/s/s x the object’s mass

Ex. Weight = 9.8m/s/s x 3kilograms

= 29.4 kg m/s/s or 29.4n

C. Weight can be measured in newtons

(N) or pounds (lbs.)

— about every 1 pound = 4 newtons

Example:

If an object has a mass of 50kg,

what is its weight in newtons?

Weight = gravity x mass

W = 9.8m/s/s x 50kg

W = 490N

Example: If an object weighs 500N, what

is its mass?

weight = gravity x mass

500N = 9.8m/s/s x mass

51kg = mass