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USPshnik [31]
3 years ago
7

Hurry need answer as soon as possible please . Compare the type of change that occurs when a substance melts and when a substanc

e is set on fire. Use complete sentences to justify the type of change that occurs.
Chemistry
1 answer:
tamaranim1 [39]3 years ago
5 0

Answer:

Explanation:

A substance melting is a physical change and the properties of the substance will remain same, only that the substance will just become liquid.

On the other hand, burning is a chemical change which produces an entirely new compount(in most cases, ash) which does not have the same properties as the original object

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Define climate and weather. What is climate change? Why is it important to know about climate change?
olga55 [171]

Answer:

It's important that we understand how the climate is changing so that we can prepare for the future. Studying the climate helps us predict how much rain the next winter might bring, or how far sea levels will rise due to warmer sea temperatures.

Weather is the state of the atmosphere at any given time and place.

Climate is the long-term average of the weather in a given place

7 0
3 years ago
What information does the second quantum number of an electron give?
grandymaker [24]

Quantum numbers are the conserved quantities in the system that expresses the position of the electron. The second quantum number describes the electron subshells.

<h3>What are quantum numbers?</h3>

Quantum numbers are the energy and the position defining values of the electron in the atomic structure. There are four basic quantum numbers, principal, magnetic, azimuthal, and spin quantum.

The second quantum number (I) is the angular quantum number that describes the magnitude of the subshells (s,p, d, and f) or the type of the subshells. It is also known as the Azimuthal quantum number.

Therefore, the second quantum number shows the electronic subshells.

Learn more about quantum numbers here:

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3 0
2 years ago
How many grams are in 2.6 moles of calcium
rjkz [21]

No.of moles=mass/Mr

2.6*40.1=mass

Mass= 104.16g

4 0
4 years ago
How many 325mg aspirin tablets can be made from 3628 grams of aspirins ? Need an answer by tonight it’s getting late .
krek1111 [17]

I took the mg and converted it to grams. That gave me .325 grams. I took that and multiplied that by 3628 grams. If I did my math correctly, the answer would be 1179.1. Rounded up, that would be 1179 aspirin tablets.   Hope this helps. :)

4 0
4 years ago
How is technology useful and how is it harmful
Lelu [443]

Explanation:

The aggregation of methods used in order to accomplish a goal is called technology.

Whether technology is used to accomplish a goal which society does not deem acceptable then the goal is bad. The same technology can be used to do good. So, the question whether technology is harmful or useful depends on the goal a person wasts to acheive.

Let us take an example

The internet is one of the greatest discoveries of mankind which allows people access to unlimited information. It can be used for a variety of different services such buying goods and services. However, the internet is also a technology that facilitates illegal activities that circumvents government intervention. This way of technology being used is harmful.

8 0
3 years ago
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