Physical chemistry 1

isothermal process Occurs under constant temperature isobaric process Occurs under constant pressure Isochoric process Occurs under constant volume isolated system A system that exchanges neither matter nor energy with its surroundings. closed system 1. A system that does not exchange matter, but does exchange energy with its surroundings. 2. Same Read more…

Modern Chemistry Chapter 3

law of conservation of mass States that matter can be neither destroyed nor created during ordinary chemical reactions or physical changes law of definite proportions The fact that a chemical compounds contains the same elements in exactly the same proportions by mass regardless of the size of the sample or Read more…

Physical Chemistry Terms

phase form of matter that is uniform throughout in chemical composition and physical state phase transition a spontaneous conversion of one phase to another at (T,p). metastable phase graphite thermodynamically stable phase diamond polymorph different orientation of solid phases

Unit 2 Matter and Change

matter anything that has mass and takes up space element a substance that cannot be separated or broken down into simpler substancesby chemical means; all atoms of an element have the same atomic number atom the smallest unit of an element that maintains the properties of that element compound a Read more…

Section 4: Physical chemistry

what are a) Acids, alkalis and salts b) Energetics c) Rates of reaction d) Equilibria Acids, alkalis and salts 4.1 describe the use of the indicators litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions 4.2 understand how the pH scale, from 0-14, can be used to Read more…

module 3.2 – physical chemistry

what is activation energy? the minimum energy required to start a reaction by breaking bonds in the reactants what are standard conditions and standard states? (standard sets of conditions, temperature and pressure, for experimental measurements established to allow comparisons to be made between different sets of data) 100kPa, 298K, 1moldm⁻³ Read more…

Chem- Chapter 2 Physical/chemical changes and properties

Physical Property A property that can be observed/measured without alterting the identity of the substance. Examples of Physical Properties -volume -density -mass -ductility -size -Temperature -odor -luster -texture -malleable -boiling/freezing/melting point -solubility Chemical Properties Characteristics that can be measured/observed with altering the composition of the substance. Examples of Chemical Properties Read more…

Physical Chemistry – Gases

Gas state of matter which neither definite shape nor definite volume Equation of State thermodynamic equation relating state variables which describes the state of matter under a given set of physical conditions when was first description of equation of states seen 300 years ago Boyle’s Law 1662, Constant T, P Read more…

2 – Physical Chemistry

physical change change that does not alter the identity of a substance physical property property that can be observed without changing the identity of the substance change of state a physical change of a substance from one state to anther chemical change a change in which one or more substances Read more…

Inorganic and Physical Chemistry

Define wavenumber Reciprocal of the wavelength (m^-1) Define quanta small packets of energy (light) which transfer energy What does the line in an emission spectrum correspond to? The difference in energy between the electronic energy levels Define quantised When electrons have a fixed energy What is the name of the Read more…

CCC Chemistry Unit 1 Test

Chemistry is the study of……and the……it undergoes. matter……changes Matter is anything that has…..and takes up……. mass…..space What is matter? What is not? People, air, buildings. Light, heat, sound. Define Organic Chemistry study of compounds containing carbon Define Inorganic Chemistry study of substances that generally don’t contain matter Define Analytical Chemistry Read more…

2B Physical Chemistry

particle a tiny substance/portion of matter energy the ability to make something happen; it cannot be created nor destroyed, only transferred. Anything above -273 degrees C has internal _________ solids state of matter where particles are in fixed, regular positions liquid state of matter where particles are close together and Read more…