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insens350 [35]
3 years ago
15

A sample of matter was given the following description: The sample of the pure substance is blue in color with an octahedral sha

pe with very distinct edges. Into which of the classification would this sample belong?
Chemistry
1 answer:
Alexeev081 [22]3 years ago
5 0

Answer:

A crystalline solid

Explanation:

Most solids form with a regular arrangement of their particles because the overall attractive interactions between particles are maximized, and the total intermolecular energy is minimized, when the particles pack in the most efficient manner. The regular arrangement at an atomic level is often reflected at a macroscopic level.  Liquids dont use to have this kind of arrangements or shapes.

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Is silver tarnishing a physical change or a chemical change?​
Shalnov [3]

Answer:

chemical

Explanation:

Some bronze objects tarnish to a dark brown color. Chemical properties can be identified by the changes they produce. The change of one substance into another substance is called a A piece of wood burning, an iron fence rusting, and a silver spoon tarnishing are all examples of chemical changes.

6 0
2 years ago
The Sun heats land and water, how is this related to wind and ocean currents?
Yuki888 [10]

Answer:

"The sun warms up parts of the oceans. Warm waters rise just like warm air rises. So, as the warmer ocean waters begin to rise in a particular area, the cooler ocean waters from a different area will move in to replace the warmer ocean waters, and this creates our ocean currents."

Explanation:

Hope this is helpful :)

8 0
2 years ago
How many moles of water can be obtained from the reaction of 4 moles of O2?
Yuliya22 [10]

Answer: 8moles

Explanation:

The reaction below shows the formation of 2 moles of water from 2 moles of hydrogen and 1 mole of oxygen respectively.

2H2(g) + O2 (g) --> 2H2O(l)

So, if 1 mole of O2 produce 2 mole of H2O

4 moles of O2 will produce Z mole of H2O

To get the value of Z, cross multiply

1 x Z = 4 x 2

Z = 8

So, the equation will be 8H2(g) + 4O2 (g) --> 8H2O(l)

Thus, 4 moles of O2 will produce 8moles of H2O .

6 0
3 years ago
An object is moving with a velocity in the positive direction. If
ludmilkaskok [199]

Answer:

Please elaborate. Maybe if you had actual answer choices

Explanation:

...

3 0
3 years ago
During photosynthesis, sunlight shining on a plant is absorbed. Through several chemical reactions, the plant produces sugar, a
weeeeeb [17]
The change is thermal energy to chemical energy.  Sugar contains a lot of chemical potential energy which is why living things use it as a source of energy.  The process of photo synthesis takes light from the sun to convert carbon dioxide and water into sugar and oxygen.  That process is basically turning the thermal energy from the light into chemical energy in the sugar.

I hope this helps.  Let me know if anything is unclear.
4 0
3 years ago
Read 2 more answers
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