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