Review 3.3 What is density? What are two factors that affect density?

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Presentation transcript:

Review 3.3 What is density? What are two factors that affect density? How does the Particle Model of Matter help explain density (in reference to temperature) What is buoyancy? What is buoyant force?

Unit A: Mix and Flow of Matter 3.0 Properties of Liquids and Gases 3.4 Compression of Fluids

Review of Density Density is the amount of matter in a given volume Not all substances have the same density It is the kind of particles in a substance that are important in determining the density of a substance

Review of Calculating Density Density is the mass (weight) per unit of volume (size) Density is found by dividing the mass of a substance by its volume Density (d) = Mass (m) Volume (V) Liquids and gases are usually measured in grams per millilitre (g/mL) or kilograms per litre (kg/L) Solids are usually grams per cubic centimetre (g/cm3)

Compressibility Compressibility is the extent to which a solid liquid or gas can be compressed Compression is the decrease of volume and the increase of density due to a force pushing on an object Objects under compression tend to deform in shape

Compressibility Compression of a golf ball

Compressibility Gases can be compressed much more than liquids In fact very little compression takes place in a liquid. Materials in a liquid state are said to be incompressible Incompressible=cannot be compressed easily Liquid Gas

Compressibility

Review ???Any Questions??? I have some for you… What is compressibility? What state has the most compressibility? What is incompressibility?