WELCOME TO THIS GREAT EDUCATIONAL BLOG

Welcome to my Pre-Nursing Exam Prep blog. I hope it will help you prepare very well for the Pre-NLN entrance exam, popularly known as the PAX exam. This is one of the entrance exams required by some schools for those who want to pursue careers in the nursing field in the USA. I will attempt to break down the review materials into manageable parts so that you can systematically and efficiently prepare for the test with less stress. I will guide you to prepare for the entire content of the test. Hopefully, you will be able to pass after going through these series.


BEST OF LUCK!


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A 12-DAY APPROACH TO ACE THE EXAM

SCIENCE REVIEWThe topics that are generally covered in the test have been grouped into twelve instructional modules below. You will be tested only on the basic concepts of physics, chemistry and biology. Click on science topics and select any of the topics listed in the module to review.

Lesson 1:

Basic structure of atom

Types of tissues

Lesson 2:

Movement of substances across the cell membrane

Acids and bases, pH scale

Carbohydrates, proteins, lipids and nucleic acids

Lesson 3:

Basic structure of the eye

Basic structure of the ear

Nervous system

Lesson 4:

Circulatory system

Introduction to mechanics (motion/forces)

Electrical circuits

Lesson 5:

Balancing chemical equations and writing formulas

Essentials of photosynthesis and respiration

Classifying organic compounds

Magnetism

Electromagnetism

Lesson 6:

Interpretation of graphs and pictograms

Analyzing and making conclusions from experiments

Data analysis

Lesson 7:

Endocrine system

Digestive system

Genitourinary system

Lesson 8:

Reproduction in mammals

Basic parts of a flower

Reproduction in plants (the process of pollination

Genetics

Lesson 9:

Modes of heat transfer

Calculating heat energies and phase diagrams

Temperature conversions (Kelvin, Celsius, Fahrenheit)

Lesson 10:

Gas laws (Boyle, Charles, Gay-Lussac)

Types of energy (Potential, kinetic, etc…..)

Chemical bonds, equilibrium and equilibrium constants

Mixtures, types of solutions, solubility

Lesson 11:

Concepts of the food pyramid, food web and food chain

Light (diffraction, refraction, reflection, dispersion)

Basic concepts on waves

Sound waves

Catalyst and enzymes

Lesson 12:

Symbiosis

Ecology

The Electroscope

Radioactivity and half-life Tropism

Tropism

Friday, March 27, 2015

PROPERTIES OF MATTER

Matter is anything that occupies space and has mass. There are three states of matter:

  •  solid
  •  liquid
  • gas. 

Matter can be classified according to two properties:

  •  physical (properties observed without changing the composition of the substance)
  •  chemical (properties that describe the tendency of a substance to undergo chemical reactions that change its chemical composition)
Physical properties can be described as:

  • intensive or 
  • extensive. 
What is an intensive property?
Intensive properties are the same for all samples and do not depend on sample size. Examples: color, physical state, melting and boiling points, optical density. 

What is an extensive property?
Extensive properties depend on the amount of material. and include mass and volume. 
The ratio of two extensive properties, mass and volume, is an important intensive property called density.


What is a physical change?
A physical change involves the conversion of a substance from one state of matter to another, without changing its chemical composition. 

Most matter consists of mixtures of pure substances, which can be:

  •  homogeneous (uniform in composition) or 
  • heterogeneous (different regions possess different compositions and properties). 
What is a pure substance?
Pure substances can be either chemical compounds or elements. 

What is the difference between a compound and an element?
Compounds can be broken down into elements by chemical reactions, but elements cannot be separated into simpler substances by chemical means.   

Read more by clicking on this link.

Monday, March 23, 2015

LIVEN YOUR DAY WITH THIS JOKE!

One year, James decided to buy his mother-in-law a cemetery plot as a Christmas gift. The following year,  he didn't buy her a gift. When she asked him why, he replied, "Well, you still haven't used the gift I bought you last year!" 
Then a fight broke out.