title: Laboratory Tests Made Easy: A Plain English Approach
author: Mikel A. Rothenberg
description: Mikel A Rothenberg, MD (deceased) was a board-certified internal medicine specialist with a special interest in critical care and emergency medicine. Dr. Rothenberg wrote several medical and legal books, numerous journal article, and an ACLS computer software program. He served as the executive editor of ACLS Alert, and wrote an advanced cardiac life support online column. A strong advocate of personal growth and self-esteem building, Dr. Rothenberg spoke internationally, presenting courses on "plain English" medical topics. Sean G Smith, BSN, RN, NREMT-P, FP-C, C-NPT, CCRN-CMC, CFRN, CEN, CPEN, has experience in both emergency care and critical care. He has written neo-natal/pediatric CE exams for the American Association of Critical Care Nurses, as well as writing for Mosby clinical updates. He has practiced and taught critical/emergency care and re-hospital emergency medical services. Sean lectures at the national level and has extensive text review/exam writing/contributing author credits.
zlib_text: Copyright © Pearson Australia 2018 (a division of Pearson Australia Group Pty Ltd) ISBN 978 1 4886 1927 4
  Pearson Chemistry 11 New South Wales
  Chapter 1 Working scientifically 
  1.1 Questioning and predicting 
  1.1 KEY QUESTIONS
  1  A hypothesis is a statement that can be tested. This involves making a prediction based on previous knowledge and 
  evidence or observations.
  2 
  A. ‘How are chemicals in solutions measured?’ is an inquiry question.
  3  a electrical conductivity
  b concentration of lead
  c electrical conductivity
  d pH
  4 
  qualitative observation
  5 
  C. A calibrated pH meter at a particular temperature provides the most accurate, quantitative data. Litmus paper and 
  universal indicator provide a qualitative indication of pH. A conductivity meter measures conductivity, not pH.
  6 
  C. A hypothesis should test only one independent variable, and it should predict the relationship between the 
  independent and dependent variables. Hypothesis A tests two independent variables. Hypothesis B do