Unit 2 - Patterns

Content

• All things are subject to classification.
• There are patterns within and between classifications.
• Living things can be classified using dichotomous keys.
• Material can be classified as solid, liquid, or gas and are known as states of matter.
• States of matter can be converted from one to the other by transfer of heat.
• The Kinetic (Particle) Theory of Matter.
• Evidence for the theory: Brownian motion and evaporation/condensation.
• Implications of the theory: explanation of chemical reaction rate by collision.
• Atomic Theory, its development and main contributors.
• Atomic structure and the Periodic Table of the Elements.
• A brief history of the development of Particle Theory, Atomic Theory and the Periodic Table of the Elements
• Patterns in the Periodic Table of the Elements: group I & II reactivity and products: metals and non-metals: acid/alkali nature of oxides.
• Patterns in large groups: the normal distribution.
• Continuous and discontinuous data.
• Patterns in waves in terms of frequency, wavelength, amplitude and speed.
• The meaning of gradients on graphs

Skills and understanding

• Interpret data in a dichotomous key.
• Classify using a dichotomous key.
• Construct a dichotomous key from data.
• Explain phase change and the characteristics of a chemical reaction.
• Explain the nature of metals and non-metals from an atomic/electron perspective.
• Analyse data from graphs.
• Use spreadsheets to form graphs and insert trend lines.
• Make dilutions.
• Record continuous streams of data time and amount of gas in a chemical reaction