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Slav-nsk [51]
3 years ago
10

Define chemical and physical changes. (

Physics
2 answers:
ZanzabumX [31]3 years ago
6 0

Chemical change is two things get chemical reaction and produce a new product.

AlladinOne [14]3 years ago
3 0

A chemical change is a change in the chemical properties of a substance, resulting in a new substance. (example: rusting iron)

A physical change only changes physical properties, and is easily reversible. It does not result in a new substance. (example: melting ice)

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Maksim231197 [3]

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if you rub a balloon on your hair, it becomes charged, and as a result It can stick to your head without being held there. why d
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Why must lslamic believers travel to Mecca once during their lives?
SSSSS [86.1K]

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4 0
3 years ago
Which sentences describe the cyclone device?
Yakvenalex [24]

Answer:

✓ A cyclone device accumulates fine particulates from the air by making a dirty air stream flow in a spiral path inside a  cylindrical chamber.

✘ It consists of several long and narrow fabric filter bags suspended upside-down in a large  enclosure.

✓ When dirty air enters the chamber, the larger particulates strike the chamber wall and fall into a conical dust  hopper at the bottom.

✘ Fans blow dirt-filled air upward from the bottom of the enclosure, trapping dirt particles inside the  filter bags and releasing clean air from the top.

✓ The top of the chamber has an outlet that lets out cleaned air.

Basically, any of these choices that have the word "filter" are wrong. The point of the cyclone device is to separate the particles without the use of filters. You can tell the right answers based on the picture attached below.

3 0
3 years ago
Read 2 more answers
Is (kr) an element a compound or a mixture?
Xelga [282]

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Krypton has nothing to do with Superman, except that about 75 years ago,
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so they chose it for the name of his home planet.

8 0
3 years ago
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