Soluble : will dissolve or spread all through the liquid Insoluble : will not dissolve in the liquid Solute : a solid dissolved in a liquid Solvent : the liquid a solid dissolves in
No Materials/ Condition after Dissolve / not Mixture/ substances mixing with water dissolve solution1 Sugar The sugar seems Dissolve Solution disappear2 Salt The salt seems Dissolve Solution disappear3 Instant The water colour Dissolve Solution coffee change into brown4 Sand The sand sink Not dissolve Mixture5 Flour After a while the flour Not dissolve Mixture sink again6 Red syrup The water colour Dissolve Solution change into red7 Baking There is bubles Not dissolve (the Mixture Powder produced and the bubbles show reaction powder sink that produce gas)
Tools for separating mixture 1. sieves 3. colander 2. paper sieves
Ways of separationWater and sand Decanting Liquid Solids
Ways ofMixture separation Oil Water Evaporate the water
Ways of Water and salt separation Evaporate the Filtering using water paper sieve
1. State true or false for each sentence!A. Salt will dissolve in water. ( )B. Sugar dissolves quicker in hot water than cold water. ( )C. When sweet tea is heated, the sugar evaporates. ( )D. Stirring makes insoluble solids dissolve quicker. ( )
a. What can they do to make Stage A quicker?b. What substance is removed at Stage B?c. What substance remains in the evaporating dish at Stage C?d. Complete these two sentences. Choose words from the list. insoluble solvent solid soluble solution A solid dissolved in water is a ……………. A substance that can dissolve in water is ……….
Which student has the correct answer to the teacher’squestion? Choose from student A, B, C or D.
A. What has happened to the salt?B. She then pours some of the solution into a basin and heats it.
When the salt solution is heated salt crystals areformed.What has happened to the water?