1. Name a food that contains an acid.2. Describe the taste of lemons and limes.3. What does ‘corrosive’ mean?4. What should you do if you spill acid?5. How does an indicator show the difference between an acid and an alkali?6. What colour does red cabbage juice go when it is added to lemon juice?7. What …
States of matter Atoms, elements and compounds Stoichiometry Electrochemistry Chemical energetics Chemical reactions Acids, bases and salts The Periodic Table Metals Chemistry of the environment Organic chemistry Experimental techniques and chemical analysis
Hydrocarbons• Carbon atoms bond to each other by single, double, and triple bonds. • Saturated hydrocarbons contain only single bonds. • Unsaturated hydrocarbons contain at least one double or triple bond. Refining Hydrocarbons• Fractional distillation involves boiling petroleum and collecting each group of components as they condense at different temperatures. • Fractional distillation towers do …
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain electrons (negatively charged). mass number: The sum of the number of protons and the number of neutrons in …