Density, mass, volume

Density, mass, volume

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What is density?

Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density.

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https://www.youtube.com/watch?v=B3kodeQnQvU&feature=emb_logo

Watch the video then explain us how this liquids couldn't get mixture? You have to use the concept of density in your explanation.

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To better understand density, think about a bowling ball and volleyball, pictured in the Figure below. Imagine lifting each ball. The two balls are about the same size, but why is the bowling ball feels much heavier than the volleyball.

Because the bowling ball is made of solid plastic, which contains a lot of tightly packed particles of matter. The volleyball, in contrast, is full of air, which contains fewer, more widely spaced particles of matter. In other words, the matter inside the bowling ball is denser than the matter inside the volleyball.

Poll

If you ever went bowling, you may have noticed that some bowling balls feel heavier than others even though they are the same size. How can this be?

• Bowling balls that feel lighter are made of matter that is less dense.

• Bowling balls that feel lighter are made of matter that is more dense.

Multiple Choice

A book has a mass of 500 g and a volume of 1000 cm³. Then the density of the book is:

• 0,5 g/m³

• 0,5 g/cm³

• 10 g/cm³

• 5 g/cm³

Multiple Choice

What is the density of a liquid that has a volume of 30 mL and a mass of 300 g?

• 10 g/dm³

• 1 g/cm³

• 10 g/cm³

https://interactives.ck12.org/simulations/chemistry/density/app/index.html?screen=sandbox&hash=665a8ef9d09765f31ae16c715ea66bab&source=ck12&artifactID=2931904&encodedID=SCI.CHE.113&courseContextID=5306536

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What did you learn from this lesson today?