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Chemistry Quiz 2

Physical and chemical change quiz review

QuestionAnswer
When heat is applied to a substance, the speed of the molecules... Increases
What is the freezing point of water? 0 degrees Celsius
What phase are particles generally the closest? Solid
What is the boiling point of water? 100 degrees Celsius
A substance is easiest to compress when it is a... Gas
Molecules move most freely when they are in... The gas phase
What kind of change must occur to form a compound? Chemical change
What is the substance in a solution that dissolved called? Solutes
What is the substance in a solution that the solute dissolves in? Solvents
Recovering the solute from the solution can be done by... Evaporation
What is a mixture? When two or more substances come together but don't form a new substance
What is a solution? When two substances combine and one dissolves in the other
What is the most common solvent? Water
Undissolved solid particles can best be separated from a solution by... Filtering
The solubility of most solids in water can be increased by... Increasing temperature
What is a physical property? A characteristic of a material that can be observed or measured without changing the identity of the material
What is a physical change? A change in physical property
What are some examples of physical properties? Length, mass, volume, density, colour, weight, state of matter
What is a chemical property? A characteristic of a material that gives a substance the ability to undergo a change that will result in a new substance
What are some examples of chemical properties? Flammability, meets with water, meets with oxygen
What is a chemical change? A change in the identity of the substance that happened because of chemical properties
What is an aqueous solution? A solution in which water is the solvent
What makes something nonpolar? It has an even distribution of electrons; it is symmetrical
What makes something polar? It is assymetrical
What does like dissolves like mean? Polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes
What is the process of state changing from liquid to gas called? Evaporation
What is the process of state changing from gas to liquid called? Condensation
What is the process of state changing from solid to liquid called? Melting
What is the process of state changing from liquid to solid called? Freezing
What is the process of state changing from solid to gas called? Sublimation
What is the process of state changing from gas to solid called? Deposition
Created by: lopiegabby