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Definition
| Pure substance that cannot be separated into simpler substances by physical or chemical means |
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| Substance in which there is only one type of particle |
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Definition
| Elements that are shiny, good conductors (thermal energy and electric current), malleable, and ductile |
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Dull, not shiny, poor conductors (thermal energy and electric current)
Solid nonmetals: brittle, unmalleable |
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Definition
AKA semi-conductors
Have properties of metals and nonmetals
Some are shiny while others are dull
Somewhat malleable and ductile
Some conduct thermal energy and electric current |
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Definition
Pure substance composed of two or more elements that are chemically combined.
Formed when two or more elements react to join together in a definite ratio |
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| Three Properties Used To Classify Elements |
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Definition
| Metal/nonmetal/metalloid, density, boiling point / melting point |
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Term
| What type of change is needed to break down a compound? |
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Definition
| Chemical change is needed to break down ______. |
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Definition
| Combination of two or more substances that are not chemically combined (meaning they do NOT react to form a compound) |
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| What type of change is needed to separate mixtures? |
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Definition
| Physical changes are used to separate _____. |
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Term
| Substances in a mixture _____ their identity |
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Definition
| Substances in a ______ retain their identity. |
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Definition
| Process that separates a mixture based on the boiling points of the components |
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Definition
| Used to separate a mixture when one of the substances is magnetic. |
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Definition
| Machine that separates mixtures based on densities of the components |
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Definition
| Mixtures can be separated by evaporating away one of the substances |
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Definition
| A mixture that appears to be a single substance but is composed of particles of two or more substances that are distributed evenly amongst each other. AKA homogenous mixture |
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Definition
| The substance that is dissolved (in a solution) |
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Definition
| The substance in which the solute is dissolved (in a solution) |
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Definition
| A measure of the amount of solute dissolved in a solvent |
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Definition
| A word used to describe a solution that does not have a lot of solute dissolved in the solvent |
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Definition
| A word used to describe a solution that does have a lot of solute dissolved in the solvent |
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Definition
| A word used to describe when the solution has more solute in it than it can normally hold |
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Definition
| A word used to describe when the solution has the perfect amount of solute to fill up the solvent |
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Definition
| A word used to describe when the solution can dissolve more solute in the solvent |
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Definition
| The amount of solute needed to make a saturated solution using a given amount of solvent at a certain temperature. Expressed in grams. |
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| Three ways to quickly dissolve solids in liquids |
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Definition
| Mixing, heating, and crushing |
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Definition
A mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out
Particles are insoluble. They do not dissolve in liquid or gas.
AKA Heterogenous mixtures |
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Definition
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Term
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Definition
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Term
| How do you separate a suspension? |
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Definition
| Passing a mixture through a filter will separate a ______. |
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Term
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Definition
A mixture in which the particles are dispersed throughout but are not heavy enough to settle out.
Particles are small and fairly well mixed.
Solids, liquids, and gases can be used to make colloids. |
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Term
| Can a colloid be separated by a filter? |
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Definition
| A _____ cannot be separated by a filter. The particles are small enough that they will pass through. |
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Term
| Three differences between solutions and suspensions |
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Definition
1. Homogenous vs. heterogenous
2. Particles dissolve vs. particles don't dissolve
3. Only a ____ can be separated through a filter |
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