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Andreyy89
3 years ago
15

Glass is a mixture but not a compound . explain​

Chemistry
2 answers:
timofeeve [1]3 years ago
5 0

Answer:

A mixture is just a combination of things, like air (made up of different but distinct gasses), or toothpaste, where compounds are physically mixed together but stay fundamentally what they started as. If there is a chemical change, like hydrogen and chlorine gas reacting to form hydrochloride acid, then it is known as a new compound.

Nimfa-mama [501]3 years ago
4 0

So there are things called elements, all things on periodic table, like hydrogen, oxygen, carbon, chlorine, magnesium, etc. All of this can be further broken down into proton, neutrons and electrons, but that's slightly off topic. So when elements bond together they form compounds or molecules, like water (made up two hydrogens and an oxygen). The bond is a sharing of electrons that keeps these elements together. When you have several different kinds of substances together you get a mixture. so think of salt water. salt (made of sodium and Chlorine elements bonded into crystals that we call salt) dissolves in the water but they don't combine to form a new compound or molecule. Through other processes you could separate the salt and the water. This is reversible physical combination of two molecules that only change the state of salt crystals. A mixture is just a combination of things, like air (made up of different but distinct gasses), or toothpaste, where compounds are physically mixed together but stay fundamentally what they started as. if there is a chemical change, like hydrogen and Chlorine gas reacting to form hydrochloride acid, then it is known as a new compound.

hope that helped.

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konstantin123 [22]

Answer:

the temperature of the star

Explanation:

The color of stars usually indicates the temperature of the star.

A star that is relatively cold usually shows a typical red color.

The hottest stars have a blue color.  

  • These star colors have been used by astronomers to determine their temperature.
  • A broad spectrum between blue, the hottest color,  and red the coldest is used.
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What 2 materials mixed together forms a solution?
Charra [1.4K]
Lemonade mix and water

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3 0
3 years ago
Read 2 more answers
(01.07 но) An experiment was conducted to determine the density of a liquid. The table shows a partial record of the experiment
Anestetic [448]

Answer:

How do you find the density of a liquid experiment?

To measure the density of a liquid you do the same thing you would for a solid. Mass the fluid, find its volume, and divide mass by volume. To mass the fluid, weigh it in a container, pour it out, weigh the empty container, and subtract the mass of the empty container from the full container.

3 0
2 years ago
The wavelength of a particular color of violet light is 433 nm. The energy of this wavelength of light is kJ/photon. (109 nm = 1
mash [69]

Answer:

4.59 × 10⁻³⁶ kJ/photon

Explanation:

Step 1: Given and required data

  • Wavelength of the violet light (λ): 433 nm
  • Planck's constant (h): 6.63 × 10⁻³⁴ J.s
  • Speed of light (c): 3.00 × 10⁸ m/s

Step 2: Convert "λ" to meters

We will use the conversion factor 1 m = 10⁹ nm.

433 nm × 1 m/10⁹ nm = 4.33 × 10⁷ m

Step 3: Calculate the energy (E) of the photon

We will use the Planck-Einstein's relation.

E = h × c/λ

E = 6.63 × 10⁻³⁴ J.s × (3.00 × 10⁸ m/s)/4.33 × 10⁷ m

E = 4.59 × 10⁻³³ J = 4.59 × 10⁻³⁶ kJ

5 0
2 years ago
3) What are the long-term effects of the Chernobyl disaster? How many people were displaced?
I am Lyosha [343]

Answer: The issue of long-term effects of the Chernobyl disaster on civilians is very controversial. The number of people whose lives were affected by the disaster is sizable. Over 300,000 people were resettled because of the disaster; millions lived and continue to live in the contaminated area.

Explanation:

5 0
2 years ago
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