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Alona [7]
4 years ago
11

1.) What are the two broad categories that elements can be divided into?

Chemistry
1 answer:
hoa [83]4 years ago
5 0

Answer:

1) Metals and nonmentals

2) Elements: Oxygen (O_{2} \\) , Nitrogen (N_{2}

3) Compounds: Carbon Dioxide CO_{2}, Methane CH_{4}, Nitrogen DioxideNO_{2}

Explanation:

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How does heating or cooling a substance help demonstrate the law of conservation of matter? PLS I NEED HELP ASAP ILL GIVE 5 STAR
I am Lyosha [343]

Answer:

It can help change it's form.

Explanation:

The law of conservation of matter or mass, states that matter is neither created nor destroyed. But, you can change the form of matter based o Physical and/ or Chemical changes.

Let's take water as an example.  Water is a liquid, but you can always change water into a gaseous or solid form by using heat or cooling methods. When you heat water, the molecules move faster to make it form into a gas form...... You don't change it chemically, but physically. Same as the cooling process, only this time you are changing it into a solid.

Hope this helps :D

7 0
3 years ago
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What are the products of the<br> alkali metals in a reaction with:<br> oxygen, water, halogen?
slava [35]

Answer:

Using The element calcium Ca, we have

CaO

CaOH

CaCl

Explanation:

8 0
3 years ago
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Although Leonardo Da Vinci was well-known for being an artist, how has he contributed to the fields of motion and medicine?
Travka [436]
Leonardo da Vinci was a very talented artist who painted the Mona Lisa, the Last Supper, and many more famous paintings. These works were famous because of Leonardo’s understanding Linear Perspective, his integration of light and shadow, and his superb understanding of anatomy.
6 0
3 years ago
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Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incinera
Alex73 [517]

Answer:

1.40 atm

Explanation:

To answer this question we can use<em> Gay-Lussac's law</em>, which states:

  • P₁T₂=P₂T₁

When volume and number of moles remain constant.

  • P₁ = 1.11 atm
  • T₁ = 23°C ⇒ 23+273.16 = 296.16 K
  • T₂ = Boiling point of water = 100 °C ⇒ 100+273.16 = 373.16 K
  • P₂ = ?

We <u>put the known data in the equation and solve for P₂</u>:

  • 1.11 atm * 373.16 K = P₂ * 296.16 K
  • P₂ = 1.40 atm
4 0
3 years ago
An oil spill is an example of
nika2105 [10]

Oil spills happen when people make mistakes or are careless and cause an oil tanker (a ship that carries oil from one country or place to another) to leak oil into the ocean. ... Natural disasters (like hurricanes) may cause an oil spill, too, by flipping an oil tanker over, causing oil to come pouring out.

An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into the ocean or coastal waters, but spills may also occur on land.

plz mark me as brainliest :)

8 0
3 years ago
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