Cette leçon contient 12 diapositives, avec quiz interactifs et diapositives de texte.
La durée de la leçon est: 50 min
Éléments de cette leçon
Which answer is false? Density is:
A
property of a matter
B
volume/mass
C
mass/volume
D
amount of substance per cubic centimetre
Slide 1 - Quiz
Remember?
density = mass/ Volume
mass (m) in grams (g)
Volume (V) in cubic centimetre (cm3)
density (p) in grams per cubic centimetre (cm3)
Slide 2 - Diapositive
Slide 3 - Diapositive
mass
1 kg = 1000 g
1 g = 1000 mg
40 mg = 0.04 g
kg --> g (x 1000)
mg --> g ( divide by 1000)
Volume
1 dm3 = 10,000 cm3
1 L = 1000 mL
40 mL = 0.04 L
L --> mL (x 1000)
mL --> L (divide by 1000)
1 mL = 1 cm3
1 L = 1 dm3
Slide 4 - Diapositive
Question
Calculate the density
Use G.A.S.
G = given
A= Asked
S= Solution
Slide 5 - Diapositive
Answer
Given: m = 200 g
l = 6 cm; w = 4 cm; h = 5 cm
Asked: density
Solution: density = m/V
V = l*w*h= 6 x 4 x 5 = 120 cm3
density = 200 g / 120 cm3
density = 1,7 g/cm3
Slide 6 - Diapositive
Calculate the density
Slide 7 - Question ouverte
Answer
Given: m = 324 g
l = 4 cm; w = 3 cm; h = 10 cm
Ask: density
Solution: density = m/V
V needs to be calculated first: V = l*w*h
V = 4 x 3 x 10 = 120 cm3
density = 324 g/ 120 cm3 = 2,7 g/cm3
Slide 8 - Diapositive
The label of a bottle of cordial says: 0.75L | 850 g What is the density of the cordial?
Slide 9 - Question ouverte
Answer
G. m = 850 g; V = 0.75 L
A. density
S. density = m/V
V = 0.75 L ; you have to convert this to cm3
V = 0.75 L = 750 mL = 750 cm3
density= 850 g/ 750 cm3
density = 1.13 g/cm3
Slide 10 - Diapositive
Question
Lisa has a rock and wants to determine the density. She uses a measuring cilinder. She starts with 50 mL water in the cilinder. After adding the rock, the water has risen to 58 mL.