What you should have learned in First Year Chemistry!!! But in case you have forgotten here are review notes. You will find links to Quizlet on the wiki page.

What Can We Measure MeasurementDefinitionCommon Units Length Measure distance Meter (m), cm Volume 3-D space occupied by a substance Liter (L), mL, cm 3 Mass Quantity of matter present in an object Gram (g), kg Temperature Measures average kinetic energy of particle in matter Kelvin (K), °C, °F Amount of particles Number of particles Moles (mol) Pressure The weight of the air mass on the Earth Atm, Pa, psi, mmHg, torr Energy The capacity to do work Joules (J), calories

Math with Scientific Notation Easiest way – use your exponent key on your calculator, look for “EE” or “EXP” Quick and Easy – at least for x and / – Multiply coefficients and add exponents – Divide coefficients and subtract exponents

Uncertainty in Measurements When making a measurement, record all certain numbers plus one uncertain number – Certain number – ones that you can read off the instrument used for measurement – Uncertain number – one that you estimate Measurements always have some degree of uncertainty. (Estimation)

Significant Figures or Sig Figs ( we love to hate them) All certain numbers plus one uncertain number WHY, WHY, WHY do we study them? Keeps our results of calculations from being more accurate than our measurements “A chain is only as strong as its weakest link”

Rules for Counting Sig Figs 1.All nonzero numbers are significant. ex. 465 – 3 sig figs 2.Zeros TypeDefinitionDo they count? Examples Leading Precede all nonzero digits Never Count – 2 sig fig – 3 sig fig Captive Fall between two nonzero digits Always Count – 4 sig fig 101 – 3 sig fig Trailing Come at the end of a number Count w/ decimal – 4 sig fig 100. – 3 sig fig 10 – 1 sig fig

Math with Sig Figs Multiplication and Division – Number of sig figs is the result of the measurement with the smallest number of sig figs Addition and Subtraction – 1)Align the decimal points 2)Carry out the calculation 3)The measurement with the fewest decimal places to the right determines the sig figs in your answer.

Polyatomic Ions and Elements Go to the wiki page for these lists. You will also find links to Quizlet so that you can study both of these topics

Equipment You will find an equipment list on the wikipage. Here is the link to practice on Quizlet.

Matter Here are some YouTube links to review matter, including elements, compounds, heterogeneous and homogeneous mixtures. As well please review the videos that have information on physical vs chemical

Periodic Table Please watch the following video to review the history and structure of the Periodic Table.