What is a variable?
Variables are elements that can be altered in an experiment, such as temperature, time, concentration, volume, and particle size. They play a crucial role in scientific investigations. Understanding variables helps in conducting meaningful experiments and drawing valid conclusions.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
1. What is a variable? 2. Name two variables.
Variables A variable is something that can be changed in an experiment. For example: - Temperature - Time - Concentration - Volume - Particle Size
Success Criteria WHAT CAN I DO? Red Amber Green State what the terms solute, solvent and solution mean. Successfully carry out an experiment into the solubility of substances. Write a valid conclusion.
Solutions If a material dissolves it is soluble. If a material doesn t dissolve, it is insoluble. soluble insoluble
Solutions Sugar dissolves, therefore sugar is soluble!
Solutions The solid that dissolves is called the solute The liquid that the solid dissolves in is called the solvent The mixture of the solute and solvent is called a solution Image result for cartoon beaker with blue liquid solution solvent solute
Solutions Solute + Solvent = Solution (solid) (liquid) (solid + liquid)
What happens when a solid dissolves?
Definitions! - Solubility Solute Solvent Solution - Soluble Insoluble - - - A solid that is dissolved in a liquid. A liquid in which a solid is dissolved. A mixture of a solute and solvent. A substance that will dissolve. A substance that will not dissolve. -
Solubility http://www.twigonglow.com/films/solutions-1475/
Experiment Aim: To find out the solubility of certain compounds in water. Method: 1. Collect 4 test tubes. 2. Half fill each test tube with water 3. Add a spatula of the first solid to the first test tube. 4. Decide if it is soluble or insoluble. 5. Record in the table. 6. Repeat for the other solids.
Experiment Results: Compound name Cloudy/ Clear Soluble/ Insoluble Salt Sugar Cetyl alcohol Salicylic acid
Saturation: Saturation is the point at which a solute is no longer soluble in a solvent (It will appear as a precipitate (solid) in the solution). Saturated
Success Criteria WHAT CAN I DO? Red Amber Green State what the terms solute, solvent and solution mean. Successfully carry out an experiment into the solubility of substances. Write a valid conclusion.
