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3 years ago

Which is a substance that is made up of only one type of atom? compound element solution mixture

Chemistry

2 answers:

Andreyy893 years ago

7 0

The substance that is made up of only one type of atom is an ELEMENT.

Further Explanation

Matter can be classified into two major groups: pure substances and mixtures.

Pure substances are substances that have a uniform and definite composition. If one were to take a sample of any pure substance, the particles that make up the substance will all be the same and will have similar properties.

Mixtures are made up of two or more substances that are placed in a similar “container”. Their composition is not uniform so a sample of a mixture may have variable amounts of its components. The substances are only physically combined so they keep their original properties and they may be separated by simple means.

Mixtures may be homogeneous or heterogeneous.

Homogeneous mixtures or solutions are mixtures wherein the components are evenly mixed and distributed so that it appears that they all exist in one phase. The individual components cannot be distinguished. Example, a mixture of salt and water is homogeneous because upon looking at it, it seems like salt and water exist in the liquid state because the salt particles are so small and evenly dispersed in the water that it is invisible.
Heterogeneous mixtures are mixtures wherein the components are distinguishable. An example of a heterogeneous mixture is sand and water. It is very clear to see the sand particles and the liquid water.

Elements and compounds are examples of pure substances.

All atoms of the same element have the same number of protons. Elements cannot be broken down further into simpler substances by simple means.
Compounds are chemical combinations of two or more elements. Their properties are different from the properties of the elements that make up the compound. Compounds have a definite composition and cannot be broken down into their component elements by ordinary means.

Learn More

colloids brainly.com/question/4397362
concentration of solutions brainly.com/question/12936072
periodic table brainly.com/question/1446926

Keywords: elements, compounds, mixtures, solution

sineoko [7]3 years ago

5 0

Element is a pure substance that is <span>made up of only one type of atom.

An element cannot be broken down by any chemical means. However, nuclear reactions can lead to the generation of new elements.
Examples of elements include: copper, neon and iron.
Currently, there are 115 known elements in nature.</span>

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According to VSEPR theory , in which fashion will the bonds and lone pairs of electrons be arranged about the central atom in th

Elina [12.6K]

Answer:

Tetrahedral, trigonal pyramidal, trigonal bipyramidal.

Explanation:

The VSPER theory states that the bonds of sharing electrons and the lone pairs of electrons will repulse as much as possible. So, by the repulsion, the molecule will have some shape.

In the ion PO₄³⁻, the central atom P has 5 electrons in its valence shell, so it needs 3 electrons to be stable. Oxygen has 6 electrons at the valence shell and needs 2 to be stable. 3 oxygens share 1 pair of electrons with P, and the two lone pair remaining in P is shared with the other O, then the central atom makes 4 bonds and has no lone pairs, the shape is tetrahedral.

In the ion H₃O⁺, the central atom O has 6 electrons in its valence shell and needs 2 electrons to be stable. The hydrogen has 1 electron, and need 1 more to be stable. The hydrogens share 1 pair of electrons with the oxygen, then it remains 3 electrons at the central atom, and the VSPER theory states that the shape will be a trigonal pyramidal.

In the AsF₅, the central atom As has 5 valence electrons, and F has 1 electron in its valence shell, so each F shares one pair of electrons with As, and there are no lone pairs in the central atom. For 5 bonds without lone pairs, the shape is trigonal bipyramidal.

7 0

3 years ago

For the reaction between aqueous silver nitrate and aqueous sodium chloride, write each of the following. The products of the re

vova2212 [387]

Answer:

A balanced ionic equation shows the reacting ions in a chemical reaction. These equations can be used to represent what happens in precipitation reactions or displacement reactions.

Precipitation reactions

In a typical precipitation reaction, two soluble reactants form an insoluble product and a soluble product.

For example, silver nitrate solution reacts with sodium chloride solution. Insoluble solid silver chloride and sodium nitrate solution form:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

The Na+ ions and NO3- ions remain separate in the sodium nitrate solution and do not form a precipitate. Ions that remain essentially unchanged during a reaction are called spectator ions.This means these can be ignored when writing the ionic equation. Only how the solid silver chloride forms is needed to be shown:

Ag+(aq) + Cl-(aq) → AgCl(s)

In a balanced ionic equation:

the number of positive and negative charges is the same

the numbers of atoms of each element on the left and right are the same

Displacement reactions

Displacement reactions take place when a reactive element displaces a less reactive element from one of its compounds.

A common type of displacement reaction takes place when a reactive metal reacts with the salt of a less reactive metal. For example, copper reacts with silver nitrate solution to produce silver and copper(II) nitrate solution:

2AgNO3(aq) + Cu(s) → 2Ag(s) + Cu(NO3)2(aq)

In this reaction, the NO3- ions remain in the solution and do not react - they are the spectator ions in this reaction. So, they can be removed from the ionic equation:

2Ag+(aq) + Cu(s) → 2Ag(s) + Cu2+(aq)

Question

Explain why this ionic equation is balanced:

Ba2+(aq) + SO42-(aq) → BaSO4(s)

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There are the same numbers of atoms of each element on both sides of the equation. The total charge on both sides is also the same (zero).

Question

Balance this ionic equation, which represents the formation of a silver carbonate precipitate:

Ag+(aq) + CO32-(aq) → Ag2CO3(s)

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2Ag+(aq) + CO32-(aq) → Ag2CO3(s)

Question

Balance this ionic equation, which represents the displacement of iodine from iodide ions by chlorine:

Cl2(aq) + I-(aq) → I2(aq) + Cl-(aq)

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Cl2(aq) + 2I-(aq) → I2(aq) + 2Cl-(aq

Explanation:

this will help, I used this for my work x

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2 years ago

When it acts as a base, which atom in hydroxylamine accepts a proton?

Rashid [163]

<span>The oxygen atom accepts the proton. The oxidation number of O is -2, meaning that there are two unshared electrons in the valence shell; In the ClO- ion, one of these is shared with the Cl- ion, leaving an unshared electron on the oxygen atom, which is what the hydrogen atom shares its electron with, becoming the proton accepted by the O atom.</span>

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3 years ago

How much energy is required to raise 10 grams of water by 10 degrees Celsius? (in Joules)

Georgia [21]

Answer:

420j

Explanation:

Heat capacity =10*4.2*10

=420j

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3 years ago

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2 years ago