Presentation on theme: "KS 3 laboratory Chemical and physical changes De Lisle Catholic Science College Science department."— Presentation transcript:
KS 3 laboratory Chemical and physical changes De Lisle Catholic Science College Science department
Chemical reactionsPhysical changes Classifying physical and chemical changes Virtual laboratory: Physical and chemical changes menu
particles of different materials collide and …… ….. new materials are made What happens during a chemical reaction ?
burning temperature changes gas bubbles colour changes solid particles forming to make a liquid look cloudy (a precipitate) What can sometimes be observed during a chemical reaction?
Reacting a metal with an acid chemical reaction hydrochloric acid (reactant) magnesium metal (reactant) 21 0 C25 0 C magnesium chloride (product) hydrogen gas (product) Add magnesium metal
Reacting a carbonate with an acid chemical reaction hydrochloric acid (reactant) calcium carbonate (reactant) 21 0 C25 0 C calcium chloride (product) carbon dioxide gas (product) Add calcium carbonate
Chemical reactions - burning magnesium: + MagnesiumOxygen Magnesium oxide white solidshiny silver solid colourless gas Show products
+ CopperOxygenCopper oxide black solidshiny brown solid colourless gas Chemical reactions – heating copper in air: Show products
+ + Oxygen Hydrogen Water colourless gas colourless liquid Chemical reactions - burning hydrogen: Show products
+ + CarbonOxygenCarbon dioxide black solid colourless gas Chemical reactions - burning carbon: Show products
there is a change in way the particles making up a material are arranged …… ….. the material may look different but no new material(s) have been made What happens during a physical change ?
melting dissolving condensation freezing evaporating crystallisation What can sometimes be observed during a physical change?
Physical changeChemical reaction Wax melting Water condensing Water evaporating Sugar dissolving Boiler exploding Jelly setting Petrol evaporating Carbon to diamonds Water freezing Food burning Food digesting Metal rusting Wood rotting Bomb exploding Petrol burning Wax burning Concrete setting Egg boiled Wax melting?Water condensing?Water evaporating?Sugar dissolving?Boiler exploding?Jelly setting?Petrol evaporating?Water freezing?Carbon to diamonds?Food burning?Food digesting?Metal rusting?Wood rotting?Bomb exploding?Petrol burning?Wax burning?Egg boiled?Concrete setting? Classify changes
KS 3 laboratory De Lisle Catholic Science College Exit Thank you for your visit to our virtual laboratory