click below
click below
Normal Size Small Size show me how
Module 2 Test
Study for Module 2 Test Chemical and Physical Properties
Term | Definition |
---|---|
heterogeneous mixture | mixture that is not uniform in composition; parts can be separated (examples: trail mix, smoke) |
homogeneous mixture | has the same uniform appearance and composition throughout; a solution; (examples: gelatin, vinegar) |
compound | formed by the combination of two or more elements (water) |
mixture | physical combination of two or more substances that are blended together without forming a new substance |
colloid | particles are scattered throughout and block the passage of light |
dilute | add water to a solution |
solubility | the maximum amount of a solute that can dissolve in a solvent |
reactant | chemicals on the left side of an equation |
product | chemicals on the the right side of an equation |
distillation | uses the different boiling points of substances to separate them |
expansion | occurs when an object’s temperature rises |
chemical change | atoms link together in new ways to create a substance different from the original substance; the only way to form compounds |
examples of chemical change | burning, baking soda and vinegar |
evidence of chemical change | gas, change in color, odor |
physical change | alters the form of an object without changing what type of matter it is |
examples of physical change | mixing food coloring with water, chopping wood |
boiling point of water | 100 degrees celcius |
freezing point of water | 0 degrees celciius |
How are temperature and solubility related? | The higher the temperature of the solvent, the higher the solubility. |
Law of Conservation of Mass | the total mass of the reactants equals the total mass of the products in a chemical reaction |
Three state of matter | solid, liquid, gas |