OCR 9-1 C1.1 Chemistry, The particle model. (Three states of matter).

This lesson has been written for the OCR 9-1 chemistry specification.
The starter asks students to complete a naming changes of state activity (there are 4 slides to choose from for this activity and a pdf handout. Or you could put the slide on the ppt and students can copy the simple triangle illustration and complete it). This requires recalling information from KS3.
The lesson then defines melting and boiling points. This is followed by an activity that requires students to identify what state of matter calcium will be at given temperatures.
The lesson then poses the question of ‘why is a solid…solid?’ This requires a knowledge of the properties of the three states of matter and students recall this information from KS3.
Students then identify the state of matter from information they are given about 4 substances.
The teacher then presents information to promote understanding of different m.p. are due to structure and type of bonding.
Change of state is then identified as a physical change and compared to chemical change. Students are introduced to the concept that physical change is still important to chemical reactions and introduced to state symbols.
The penultimate activity asks students discuss the limitations of particle theory.
The plenary is a literacy task asking for a paragraph explaining the difference in m.p. of 2 given substances. This is differentiated by the addition of key terms and a starter sentence.
I have included an activity I designed for the AQA version of this lesson. It is differentiated to a choice of 2 levels of difficulty. It challenges students to identify the contents of jars based on their state of matter. They are given the m.p. and b.p.as clues.