chemistry No Specifics Flashcards

1
Q

Precipitation

A

a chemical reaction occurring in an aqueous solution where two ionic bonds combine, resulting in the formation of an insoluble salt. These insoluble salts formed in precipitation reactions are called precipitates.
(a reaction between two salts.)

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2
Q

solute

A

A substance that is dissolved in a solution

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3
Q

solvent

A

A solvent is a chemical substance that dissolves another chemical substance to form a solution of a homogeneous mixture.

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4
Q

solution

A

a homogenous mixture which mainly comprises two components namely solute and solvent.

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5
Q

Mixture

A

Mixtures are substances formed by physically mixing two or more substances together

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6
Q

Compounds

A

Compounds are substances formed by the chemical combination of two or more elements.

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7
Q

Acids

A

what is an acid: A substance that contains or dissolves in water to produce hydrogen ions.

Definition of Acid: A proton donor (it donates hydrogen.)

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8
Q

Saturated solution

A

A saturated solution is a solution that cannot dissolve anymore solutes at a given temperature.

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9
Q

soluble base

A

Aka an alkali

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10
Q

proton acceptor

A

base

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11
Q

a reaction which gives salt and water as the only products

A

neutralization

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12
Q

(q) A reaction which an insoluble salt is prepared from solutions of two soluble salts

A

precipitation reaction

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13
Q

A mixture of indicators that has different colors in solutions of different pH

A

universal indicator

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14
Q

Universal indicator

A

A universal indicator is a mixture of different types of indicators that exhibits different coloration at different levels. It is used to detect the acidic or basic nature of a substance or a solution. It can be in the form of a paper strip or a solution.

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15
Q

What are mineral acids

A

A mineral acid or inorganic acid is any acid derived from an inorganic compound that dissociates to produce hydrogen ions (H+) in water. Mineral acids are highly soluble in water but tend to be insoluble in organic solvents. The inorganic acids are corrosive.

Types of mineral acids: H2SO4 (SULFURIC ACID) HCL (HYDROCHLORIC ACID), HNO3 (NITRIC ACID)

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16
Q

Why are acids reactive

A

It is so reactive because of the H± ion.

17
Q

Proton

A

A proton is a positively charged subatomic particle present in the nucleus of an atom.

18
Q

Isotope

A

An isotope is a variation of an element that possesses the same atomic number but a different mass number. A group of isotopes of any element will always have the same number of protons and electrons. They will differ in the number of neutrons held by their respective nuclei.

19
Q

Neutron

A

The neutron is a subatomic particle, symbol n with no net electric charge

20
Q

Electron

A

Electrons are the negatively charged particles of atom.

21
Q

Diatonic gases

A

H2, o2, N2, F2, Cl2, Br2, I2

22
Q

residue

A

The solid or insoluble component left in the filter after the process of filtration

23
Q

Filtration

A

Filtration – The process by which the insoluble or suspended particles of a mixture are separated from the liquid by using a porous membrane called a filter is called filtration.

24
Q

Filtrate

A

The liquid that has passed through the filter.

25
Q

Cation

A

:A positively charged ion is known as cation. A cation is formed by loss of one or more electrons by an atom. A cation is formed by removal of electrons from an atom

26
Q

Anion

A

a negatively charged ion,

27
Q

Insoluble

A

a substance does not dissolve in water. Ex sand and fat

28
Q

Types of oxides

A

Acidic oxides: non-metal + oxide. Ex. So2
Neutral oxides: oxides that are neither acids or bases: H20, CO2
Basic oxides: metal + oxide. EX.MGO,
Amphoteric oxides: an oxide that can act either as an acid or as a base to create salt and water in a reaction.
Ex. Al2o3, ZNo

29
Q

Alkali

A

An alkali is any base substance that dissolves in water to produce OH (hydroxide) ions and neutralise acids. Alkalis have a pH of 7 or above,