Chemical Reactions

Question 1

Reaction

Answer 1

A chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances.

Question 2

Observation

Answer 2

The ability to notice things, especially significant details

Question 3

Solubility

Answer 3

Able to be dissolved, especially in water

Question 4

Combination

Answer 4

A particular arrangement of different elements. Some things connecting into one.

Question 5

Exchange

Answer 5

An act of giving one thing and receiving another (especially of the same kind) in return.

Question 6

Displacement

Answer 6

The action of moving something from its place or position

Question 7

Reactant

Answer 7

A substance that takes part in and undergoes change during a reaction.

Question 8

Product

Answer 8

A substance produced during a natural, chemical, or manufacturing process

Question 9

Thermal Decomposition

Answer 9

When a compound breaks down to produce more than one compounds or elements. Reacts when in heat.

Question 10

Spectator ions

Answer 10

Is an ion that exists in the same form on both the reactant and product sides of a chemical reaction.

Question 11

Precipitate

Answer 11

Chemistry cause (a substance) to be deposited in solid form from a solution

Question 12

Element

Answer 12

Each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms.

Question 13

Ion

Answer 13

It’s an atom that either losses or gaining an electron.

Question 14

Atom

Answer 14

Consist of a tiny, dense, positively charged nucleus made of neutrons and protons, surrounded by a cloud of negatively charged electrons, roughly 10−8 cm in diameter. Its smallest particle of a chemical element that can exist.

Question 15

Proton

Answer 15

Is a positively charge particle that resides within the atomic nucleus. The number of protons in the atomic nucleus is what determines the atomic number of an element, as outlined in the periodic table of the elements.

Question 16

Electron

Answer 16

Is a fundamental particle, which means it cannot be broken into smaller particles. May be bound in the “electron cloud” surrounding an atomic nucleus, or may break free from the cloud as a “free electron.”

Question 17

Neutron

Answer 17

Is a subatomic particle contained in the atomic nucleus. It has no net electric charge, unlike the proton’s positive electric charge.

Question 18

Solution

Answer 18

Is a homogeneous mixture of two or more substances. May exist in any phase.

Question 19

Aqueous

Answer 19

Is a term used to describe a system which involves water. The word is also applied to a solution or mixture in which water is the solvent. When a chemical species has been dissolved in water, this is denoted by writing (aq) after the chemical name.

Question 20

Activity series

Answer 20

List of metals ranked in its order decreasing reactivity to displace hydrogen gas from water and acid solutions.

Question 21

Cation

Answer 21

Is an ionic species with a positive charge.

Question 22

Anion

Answer 22

An ionic species having a negative charge.

Question 23

Ionic compound

Answer 23

is a compound formed by ions bonding together through electrostatic forces.

Question 24

Molecule

Answer 24

They form when two or more atoms form chemical bonds with each other. It doesn’t matter if the atoms are the same or are different from each other.

Question 25

Compound

Answer 25

It is a chemical species that is formed when two or more atoms join together chemically, with covalent or ionic bonds.

Question 26

State

Answer 26

The particular condition that someone or something is in at a specific time

Question 27

Metal

Answer 27

A substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions (cations). Metals are otherwise defined according to their position on the Periodic Table, including groupings as alkali metals, alkaline earth metals, transition metals, and rare earth metals.

Question 28

Solvent

Answer 28

The component of a solution that is present in the greatest amount. It is the substance in which the solute is dissolved.

Question 29

Solute

Answer 29

The substance that is dissolved in a solution. For solutions of fluids, the solvent is present in greater amount.

Question 30

Polyatomic ion

Answer 30

Is an ion that comprises of two or more atoms.