SMARTTEACHING: CHEMISTRY AND PHYSICS

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e-Lectures and Worksheets


Download and Activation:


Download and Activation of e-lectures, worksheets and tutorials from Direct-Science


Windows 10: Click Here to download the Direct-Science e-Book with e-lessons, worksheets and tutorials.


Windows 8.1; 8, 7 ; Vista and XP : Click Here to download the Direct-Science e-Book with e-lessons, worksheets and tutorials.


Activation of the Direct-Science e-Book (when downloaded):


  • Open the Direct-Science e-Book from the Icon
  • Email the "user code" of the e-book (as well as "English Version") to direct.science.activation@gmail.com and request an activation code.


  • An activation code will be emailed to you - follow the instructions (below) to activate the book.
  • Open the e-Book
  • Click on Index
  • Click on any Grade
  • Click on Activate Lectures
  • Enter the Code
  • Click on Activate
  • Click on any Lecture
  • Expiry Date will be visible
  • Lectures, Worksheets, Tutorials can be opened



Access the software (when downloaded):

  • Click on Index and select appropriate grade 
  • Content will be displayed

 

 

A: Lecture (Open and click to progress through the lecture)

 

 B: Worksheet (Print and complete while working through the lecture)

 

 C: Exercises (Print and complete)

(New! Being added regularly)

 

 D: Answers (for Exercises)

(New! Being added regularly)




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 The Atom:

Composed of three sub-atomic particles.

Proton - positively charged particle located in the nucleus of the atom.

Neutron - electrical neutral particle located in the nucleus of the atom.

Electron - negatively charged particle occupy space around the nucleus


Mass of Proton:

1.6726219 × 10 -27 kg

Mass of Electron:

9.10938356 × 10−31 kg

Mass of Neutron:

1.6726219 × 10-27 kg


Chemical Bonds:

Non-polar Covalent Bond:

This chemical bond develops between two identical non-metal atoms as a result of equal sharing of electrons.



Polar Covalent Bond:

This chemical bond develops between two non-identical non-metal atoms as a result of unequal sharing of electrons.


Ionic Bond:

This chemical bond develops between a metal cation and non-metal anion as a result of electron transfer from the metal to the non-metal.

 Crystal structures:

Ionic structure composed of sodium cations and chloride anions.



Covalent Network Structure:

Diamond composed of carbon atoms.


Graphite composed of carbon atoms.


Di-atomic Molecules:

Certain elements exists in nature as stable di-atomic molecules (2 atoms form a stable unit).

Hydrogen:



Nitrogen:



Oxygen:




Fluorine:



Chlorine:



Bromine:




Iodine:



Organic Chemistry:

Organic chemistry is the chemistry of the element carbon.

Alkanes are an organic group composed of hydrogen and hydrogen atoms with only single bonds (saturated).  Methane is the smallest alkane.



Alkenes are an organic group composed of hydrogen and hydrogen atoms with at least one double bond (unsaturated).  Methane is the smallest alkane. Ethene is the smallest alkene.


Alkynes are an organic group composed of hydrogen and hydrogen atoms with at least one tripple bond (unsaturated).  But-2-yne is an alkyne composed of 4 carbon atoms with the triple located between C-2 and C-3.




Force:

Force is the capacity to do work or cause physical change transfer energy.

Symbol: F

Unit: Newton (N)

Vector (magnitude and direction)



 Gravitational Acceleration:

Falling object will accelerate downwards at a constant rate of 9,8 m/s2.

The velocity of the falling object increases by 9,8 m/s every second.

(g = 9,8 m/s2)

 

Linear Momentum:

Symbol: p

Unit: kg.m/s

Vector

 

Transverse Waves:

Moving water is an example of transverse waves.


Longitudinal Waves:

Sound performs a longitudinal wave by disturbing air particles.

 

Electrochemical Cells:

Conversion of Chemical Energy into Electrical Energy.


Electrolytic Cells:

Conversion of Electrical Energy into Chemical Energy.

 


Periodic Table:

Arrangement of elements according to increasing Atomic Numbers.