Year 8 Science: Atoms and Molecules

Learning Intention: Students will be able to recognise the structure of atoms and molecules and understand some of the features of the periodic table. They will know that elements are pure substances made up of a single type of atom.

Success Criteria: You will be able to define atoms, molecules, elements and compounds. You will be able to draw a labelled diagram of an atom and explain why elements are arranged in the periodic table in rows and columns.

As you discovered this week, chemistry is everywhere! All substances are made up of atoms and molecules whether they be gases, liquids or solids. Some are pure substances (elements) made up of one type of atom, but most are compounds, made up of molecules of atoms of different kinds. We will complete several experiments next week, that show that a compound can be very different from the elements from which it is comprised. For example, hydrogen(H2)  and oxygen(O2) are colourless gases, but H20 (water) is a colourless liquid. Carbon (C) can be like charcoal, graphite or diamond, but carbon dioxide (CO2) is a colourless gas.

More information about atoms and elements at BBC Bitesize and the NDT Resource Centre.

Welcome Back – Year 9 Science 2012!

Welcome back to school for another fabulous year of science and learning! Please bookmark this site for future reference as this will be the starting point for all our science studies during the year. Our first unit of work will build on your knowledge of matter, atoms and molecules, elements and compounds and chemical reactions.

Learning Intention:

(1) Students will understand that all matter is made of atoms which are composed of protons, neutrons and electrons; natural radioactivity arises from the decay of nuclei in atoms.

(2) They will know that chemical reactions involve rearranging atoms to form new substances; during a chemical reaction, mass is not created or destroyed.

(3) Students will understand chemical reactions, including combustion and the reactions of acids, are important in both non-living and living systems and involve energy transfer.