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satela [25.4K]
3 years ago
8

Cara and Chuck were looking at pond water through a microscope. They saw this image. Cara wondered what it was. Chuck said it ha

d to be a living thing because it was
A) green.
B) moving.
C) made of cells.
D) round throughout.
PLZ HELP!
Chemistry
2 answers:
Tresset [83]3 years ago
3 0
C cells because all living things nedd cells
slamgirl [31]3 years ago
3 0
I believe it is B because green does not mean living while something moving would be living. 
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Answer:

<em><u>Glass that will sink</u></em>

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<em><u>Glass that will float</u></em>

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Explanation:

Density is the property of matter that states the ratio of the amount of matter, its mass, to the space occupied by it, its volume.

So, the mathematical expression for the density is:

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By comparing the density of a material with the density of a liquid, you will be able to determine whether object will float, sink, or do neither when immersed in the liquid.

The greater the density of an object the more it will try to sink in the liquid.

As you must have experienced many times an inflatable ball (whose density is very low) will float in water, but a stone (whose denisty is greater) will sink in water.

The flotation condition may be summarized by:

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  • alkali strontium with a density of 2.26 g/mL in a solution with a density of 2.34 g/mL, because 2.26 < 2.34.

<em><u>Glass that will not sink or float</u></em>

  • potash borosilicate with a density of 2.16 g/mL in a solution with a density of 2.16 g/mL, because 2.16 = 2.16
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