SNC1P Review for Unit Test Dec 2015 Whiteboard session SNC1P Review for Unit Test Dec 2015

Intro When is our Unit Test on? Friday!!! What is your favourite colour?

Properties/Changes List 4 physical properties you could use to tell the difference between a block of ice and a block of iron? Density, colour, clarity, lustre, malleability Give me 3 clues that a chemical change has occurred? Gas given off, colour change, temperature change, odour produced, solid produced What does ductily mean? The ability to pull something into thin wires What is the density? Is snow melting an example of a physical or chemical change? Physical

Elements, Compounds, Mixtures Name the two types of pure substances? Elements and compounds What is the substance with the symbol Na? What type of pure substance is it? Sodium and it’s an element Tell me the elements and how many of them are in H2O2 Hydrogen=2, Oxygen=2

Subatomic Particles What does the Atomic Mass tell us? Number of Protons and Neutrons Using the Periodic Table how do we find out how many electrons are in an element? Use the Atomic Number to get protons and if it is a neutral element, the number of protons is equal to the number of electrons

BR Diagrams Draw the BR Diagram for (a) Calcium (b) Neon

Periodic Table Trends Ca has 2 e- in it’s outer shell, give me others elements with 2e- in outer shell? Be, Mg, Sr Write two elements with the same properties as Ne? Ar, Kr, Xe In terms of the BR diagram, what do K, Ca and Sc have in common? Same no. of shells How many shells do they have? 4 Name some elements belonging to the Halogen group/family? F, Cl, Br, I