Diagrams of equipment should be done carefully, not rushed. Use a ruler for straight lines, and make sure there are no gaps where there shouldn't be gaps.
Decanting, evaporation and filtration are methods for separating a liquid from a solid. One may be more appropriate than another for any given situation.
Zero the scales.
Being careful not to spill any solid on the scales, weigh out approximately the correct amount (the concentration of the solution will be calculated from this amount now that it is known exactly).
Use a wash bottle to rinse all the solid into the volumetric flask.
Stopper and shake to dissolve the solid, then fill the flask and stopper for storage.
Rinse the conical flask with distilled water, and the burette and pipette with their solutions to be used.
Pipette the correct solution into the conical flask (touch the tip to the side of the flask to get the last drops), and add indicator if necessary.
Place the conical flask under the burette, record the reading on the burette and slowly open the tap.
Continue swirling the reaction mixture, slowing the tap when the colour change stays for longer.
When the first permanent colour change occurs, record the final reading from the burette.
A hypothesis is a testable statement , for example "If this happens, then that will happen".
Using evidence from an investigation, you can support or reject the hypothesis.
Observations are either measured or directly sensed (seen or heard, for example). "The acid reacted" is a deduction, whereas "the mixture changed from blue to colourless" is an observation.
Conclusions are written to answer questions or make a decision about a hypothesis. They are based on observations, calculations and other information.
Since particles in chemistry are so small we refer to groups of particles called moles.
The molar mass of each element is given on the periodic table. One mole of that element would have that mass in grams.
n = m / M where n is number of moles, m is mass in g (grams) and M is molar mass in g mol-1 (grams per mole).
The amount of a chemical in a solution or gas can be measured by the amount per volume. The concentration in mol L-1 (moles per litre), for example, can be found by dividing the number of moles by the number of litres.