Atomic Theory And Bonding

Question 1

What is atomic number

Answer 1

Atomic number is the number of protons in the atom

Question 2

What are isotopes

Answer 2

Isotopes are elements that have a change in the number neutrons in the nucleus

Question 3

What is precipitation

Answer 3

Precipitation is a reaction that occurs when two solutions react to form an insoluble product

Question 4

What is a ionic bond

Answer 4

Ionic bonding is the process when a metal and non-metal bond together, this occurs because metals are more reactive as they have a lower number of valance electrons in the outer shell, causing a non metal element to take that metals valance electrons so both shells become filled and become ionic compounds

Question 5

What is a covalent bond

Answer 5

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

Question 6

What is a alkali metal

Answer 6

Akali metals are metal elements found in group one. They are the most reactive element in the periodic table because of their low number of valance electrons, pushing the element to almost always give their valance electrons away.

Question 7

What is a metalloid

Answer 7

Metalloids are elements that are in between a metal and non metal. On the periodic table they are found between transistor metals and halogen elements around the diagonal line that is drawn to separate metals from non metals. They are brittle, a solid at room temperature, have a low melting point and can both conduct and insulate when certain conditions are met.

Question 8

What is dalton atomic theory

Answer 8

Dalton’s atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks.

Question 9

What is activation energy

Answer 9

the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

Question 10

What is a catalyst

Answer 10

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

Question 11

What is a decomposition reaction

Answer 11

A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds.

Question 12

Factors that affect rate of reaction

Answer 12

surface area of a solid reactant.
concentration or pressure of a reactant.
temperature.
nature of the reactants.
presence/absence of a catalyst.