SAS Curriculum - Density #11

A substance’s density is the measure of the mass of material within a certain volume. (amnt of space taken up)

The mass (amnt of particles) is affected by how tightly packed the molecules are within the space.

A B

A and B = SAME VOLUME (same size)

A B

A and B = SAME VOLUME (same size)

A B

A and B = DIFFERENT MASS (amount of particles; different substance)

Different Densities

C D

C and D = DIFFERENT VOLUME (different size) but same substance

C D

C and D = DIFFERENT VOLUME (different size) but same substance

Same Densities-

particles are packed the

same way

1. Go to: Learning Point

2. Select: Feb. 27th – Mar. 2nd

3. Select: SAS Curriculum #11 hyperlink

4. Type in: eagles

Object # Mass(g)

Initial Volume

(mL)

Final Volume

(mL)

Object Volume

(mL) 1

   5    

 2

   5    

 3

   5    

 4

   5    

Table 1: Data for objects 1-4

Subtract Final Volume from Initial

Volume

Subtract Final from Initial

Object #

Mass (g)

Initial Volum

e (mL)

Final Volume

(mL)

Object

Volume

(mL)

Density(g/mL)

RESULTS(S= sink; F=floats)

Water Ethano

Gasoline

Sea H2O

 5 

 6 

 7 

 8 

 9 

 10 

 11 

Table 2: Data for Objects 5-11

Divide Mass by Object Volume

Subtract Final from Initial

Substance Density(g/mL)

aluminum 2.7copper 8.9

gasoline 0.68gold 19.3ice 0.917iron 7.8lead 11.3

seawater 1.025wood (average value) 0.8

Table of Densities

Subtract Final from Initial

Liquid Color of

Liquid

Volume (mL)

Mass (g) Density (g/mL)

1.Water Light Blue

 5    

2. Ethanol Dark Blue

 5    

3. Gasoline

Dark Green

 5    

4. Seawater

Light Green

 5    

Table 3: Liquid Densities

Mass divided by Volume = Density

1. Introduction to Density Due today sometime.

2. Have an enjoyable weekend!