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Tresset [83]
3 years ago
11

A student mixed some yellow sulfur powder with some iron filings. She was able to take the iron out of the sulfur by using a mag

net. She then remixed the iron and sulfur in a test tube and heated it. After it cooled, she removed the substance from the test tube but could not separate the iron from the sulfur using the magnet. Which type of change occurred in the material when it was heated?
Chemistry
1 answer:
Kay [80]3 years ago
8 0

Answer: Chemical change

Explanation:

Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance. The change can be reversed using physical methods.

Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state. The change can only be reversed using chemical methods.

Thus when iron and sulfur are heated in a test tube, the chemical change occurs and thus lead to formation of new substances which could not be separated using magnet.

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Process.

Take a thermos and add one cup of milk and heat it after heating it add 3,4 spoon of vinagar and place it aside for sometime until you will see the milk turns to plastic like shape this was very useful method for making plastic.

4 0
4 years ago
Calculate the mass in grams<br> 5.0 moles of carbon
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7 0
4 years ago
1. A car has a mass of 4000 kg. What force is required to make the car accelerate at 20 mss
shtirl [24]

Answer:

As Per Given Information

Mass of Car 4000 Kg

Acceleration of car 20m/s²

we have to find the force required to make the car car accelerate at given magnitude .

Using Formulae

  • Force = Mass × Acceleration

On Putting the value we obtain

↝ Force = 4000 × 20

↝ Force = 80000 N

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So, the force required to maintain the given acceleration is 80 KiloNewton .

8 0
3 years ago
Considering the activity series given below for metals and nonmetals, which reaction will occur?
kozerog [31]

Answer:

the answer is C i just took the test

Explanation:

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5 0
4 years ago
The main factor that influences the direction of any periodic trend across a period is ______.
aalyn [17]

Answer:

The correct option is B

Explanation:

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It should be noted that option A is wrong because elements in the same period generally have the same number of electron shells and thus the distance of this shells from the nucleus remains the same throughout the same period and thus option C is also wrong. Option D is wrong because the periodic trends have to do with chemical reactions which actually involves electrons and not protons.

3 0
3 years ago
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