Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
V = l × w × h
If the cube has a
Height of 2cm
Length of 2cm
Width of 2 cm
What is it’s volume?
8 cm3
Same Space Different amount of items
The formula for density is
Density = Mass/Volume
The particle theory states that the particles of a substance spread out as they gain energy when heated.
(i) drying of wood (seasoning of wood)
(ii) hot air balloons
(iii) salt water being easier to float in
Volume is a measurement of the amount of space occupied by the substance.
Official 1 kilogram mass
Density is the amount of mass in a certain unit volume of a substance.
1. A piece of metal has a mass of 8.1 g and a volume of 3.0 cm3. What is the density of the metal? Look at the densities of the solids in Table 8.1. What type of metal do you think was described in this problem?
Find the density of a 10 g mass of a substance that has a
volume of 2.0 cm3.
• Write the formula for density. D = m/V
• In place of m for mass, write 10 g. D = 10 g/V
• In place of V for volume, write 2.0 cm3.
D = 10 g/2.0 cm3
• Carry out the division.
That is, divide 10 by 2.0. D = 5.0 g/cm3
3. You collect 1000 mL of a gas in a balloon. If the gas in the balloon has a mass of 2.0 g, what is the density of the gas? Use Table 8.1 to identify the gas.
2. Imagine that you poured a liquid into a measuring spoon that holds 2.5 mL. When you measured the mass of the liquid, you discovered that its mass was 3.15 g. What is the density of the liquid? Was this liquid water? Explain how you could check if the liquid was water.
(i) hot air balloons
(ii) warm vs. cool tire pressure
(iii) water in its three states