Safety+and+Matter

__** //The Science Safety Rules// **__


 * 1) Do not enter the laboratory unless you are with a teacher.
 * 2) Listen for the sound of my voice. (very important).
 * 3) Never touch the equipment in the laboratory unless you are told to use it.
 * 4) Never eat in the laboratory.
 * 5) Always walk – NEVER run, and never throw anything in the laboratory.
 * 6) Wear protective clothing – laboratory coat, safety goggles when required, closed toe shoes, and ensure that long hair is tied back.
 * 7) Never taste chemicals.
 * 8) Don’t use paper to light Bunsen burners, and don’t put burning things into the rubbish bin.
 * 9) Keep books, paper, long hair and clothing away from flames and chemicals.
 * 10) Always point test tubes away from people.
 * 11) f anyone is seen interrupting another groups experiment, or seen to be ‘mucking around’ they will be asked to sit out of the rest of the experiment and complete theory work.
 * 12) Check with your teacher on how to dispose of waste liquids and solids. Broken glass should be placed in a special bin.
 * 13) If you spill something on your skin, wash it immediately with lots of water. Tell your teacher.
 * 14) Report all accidents and breakages to your teacher.
 * 15) After heating equipment, let it cool down before picking it up. This will avoid burns.
 * 16) Clean all equipment after use and put it back where you got it. Clean your workbench if there is a spill, and after doing experiments.


 * Chemistry Topic // "__MATTER__ and __THE PARTICLE MODEL__" (The main ideas) //**

__ Chemists __ study how substances react with other substances. They investigate and explain why some substances behave differently from others and how they can best be used. ||
 * < ** CHEMISTRY is… ** ||
 * The study of substances, what they are made of, how they are formed, how they change and what happens when they are combined. Branches of ch emistry include radiochemistry, the study of radioactive substances, and pharmacology and the study of the effect of drugs on living things.

 ||
 * **MATTER is…**
 *  All living and non-living things are made of matter. Most matter can be classified as a solid, liquid or a gas. A substance in a solid, liquid or a gas state will change state if enough heat is applied or if the substance has been cooled enough (see the change of state wheel).  ||

 ||
 * **THE PARTICLE MODEL STATES…**
 * Changes of state can be explained in terms of the particle theory.


 * 1)  All matter is made up of particles too small to see.
 * 2)  There are spaces between the particles.
 * 3)  There are attractive forces between the particles. When the forces are strong the particles are close, when the forces are weak the particles are further apart.
 * 4)  The particles are always moving.
 * 5)  The particles move faster at high temperatures than they do at low temperatures.   ||