definitions I don't know

Question 1

define compound

Answer 1

a substance made up of two or more elements chemically joined together

Question 2

define element

Answer 2

a substance made up of atoms that all contain the same number of protons and cannot be split into anything simpler

Question 3

define molecule

Answer 3

the smallest part of a compound that can exist independently

Question 4

define ion

Answer 4

this is an electrically charge atom or group of atoms formed by the gain or loss electrons

Question 5

define covalent bonding

Answer 5

bonding between two non-metals formed by sharing a pair of electrons

Question 6

define metallic bonding

Answer 6

the attraction between positive ions and a sea of delocalised electrons that keeps the ions together

Question 7

define isotopes

Answer 7

an atom of the same element with the same number of protons but different number of neutrons

Question 8

define polymer

Answer 8

a polymer is made by joining many small identical molecules/monomers

Question 9

define thermal decomposition

Answer 9

Thermal decomposition is the term used to describe reactions where a substance breaks down due to the action of heat

Question 10

define endothermic reaction

Answer 10

a reaction that absorbs heat from its surroundings decreasing its temperature; energy required to break existing bonds is greater than energy needed to form new ones

Question 10

define exothermic reaction

Answer 10

a reaction that releases heat to its surroundings increasing its temperature; energy required to form new bonds is greater than energy needed to break existing bonds

Question 11

define equilibrium

Answer 11

the rate of forward reaction is equal to rate of backward reaction and concentration remains constant

Question 12

define electrolysis

Answer 12

electrolysis is the break down of ionic compounds in molten or aqueous states through the passage of electricity

Question 13

define a strong/(weak) base

Answer 13

a strong base is a base that fully ionizes/completely dissociates to form ions

weak bases- partially ionize

Question 14

define a strong/(weak) acid

Answer 14

a strong acid is an acid that fully ionizes/fully dissociates to form ions
weak acid partially ionize

Question 15

define ionic bonding

Answer 15

this is electrostatic attraction between oppositely charged ions/ particles

Question 16

define unsaturated

Answer 16

compounds that contain one or more carbon to carbon double or triple bonds

Question 17

define saturated

Answer 17

a compound containing only carbon - carbon single bonds

Question 18

define monomer

Answer 18

Monomers are small molecules, mostly organic, that can join with other similar molecules to form very large molecules, or polymers

Question 19

define polymer

Answer 19

Polymers are large molecules built by linking 50 or more smaller molecules called monomers

Question 20

define hydrocarbon

Answer 20

A compound that contains only hydrogen and carbon atoms

Question 21

define amide links

Answer 21

the link between monomers between a protein or nylon formed by a condensation reaction between a carboxylic acid group on one monomer and an amine group on the next monomer

Question 22

define ester links

Answer 22

the link formed from a carboxylic acid and an alcohol also found in polyesters

Question 23

define homologous series

Answer 23

This is a series or family of organic compounds that have similar features and chemical properties due to them having the same functional group.

Question 24

define functional group

Answer 24

This is a group of atoms which are bonded in a specific arrangement

Question 25

define saturated solution

Answer 25

A solution where no more solute can dissolve (any more solute that is added will settle at the bottom)