Key Definitions Flashcards Preview

Chem > Key Definitions > Flashcards

Flashcards in Key Definitions Deck (20):
1

Hydrocarbon -

A compound that contains ONLY hydrogen and carbon atoms.

2

Alkanes general formula -

CnH2n + 2

3

Alkenes general formula -

CnH2n

4

4 Features of a homologous series -

1- Trend in physical properties
2- Similar chemical properties
3- Same general formula
4- Each successive member of the series differs by CH2

5

Saturated -

Contains only single bonds (alkanes)

6

Unsaturated -

Contains double bonds (alkenes)

7

Isomers -

Same molecular formula, different structural formula

8

What is Diffusion?

The random mixing and moving of particles in liquids

9

What is an element?

Substances that cannot be broken down into anything simpler because they are made up of only one small particle

10

What is a mixture?

Contains two or more substances

11

What is a molecule?

the building blocks of the substances around us

12

What is a compound?

Formed when atoms join together in a chemical reaction.

13

Polymer -

Monomers joined together
Two basic types ate addition and condensation

14

Monomoer -

Join together to make polymers

15

Functional group -

Group of atoms responsible for the characteristic reactions of a particular compound

16

Cracking conditions -

-600-700 degrees
-Aluminium/silica

17

Cracking definition -

A process where long chain molecules are broken down into short chain molecules by the breaking of carbon bonds.

18

Which homologous series does combustion undergo?

Alkenes

19

Which homologous series does substitution undergo?

Alkanes

20

Which homologous series does addition undergo?

Alkenes