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science

TermDefinition
matter everything is made of matter, which is anything that: has mass and takes up space
element element- a substance that cannot be broken down into any other substances by chemical or physical means.
building blocks a. often called the " building blocks" of matter because all matter is composed of one element or a combination of two or more elements.
115 b. there are currently around 115 named elements, many of which you are very familiar with.
pure since an element is a pure substance, you can't reduce it to anything else. You just get smaller parts of that element.
atom a. the smallest particle of an element. i. Around 430 B.C. Democritus, a greek philosopher, proposed the idea that if you cut something over and over you would eventually get to a piece that cannot be cut.
uncuttable 1. He called this piece " Atomos," which means uncuttable
Elements- a substance that cannot be broken down into any other substances by chemical or physical means. A. often called "Building Blocks" of matter because all matter is composed of one element or a combination of two or more elements.
Atom- Atom- the smallest particle of an element.
Compound- a pure substance made of two or more elements that are combined chemically.
Chemical Formulas Compounds are represented by Chemical Formulas. Letters, numbers, and symbols are used to represent elements and the number of elements in each compound.
mixture a mixture is two or more substance- elements, compounds, or both- that are in the same place but are not chemically combined
heterogeneous mixtures consists of visibly different substances or phases
homogeneous mixtures has same uniform appearance and composition throughout
solution solution- a mixture in which the molecules of one substance, known as the solute, are dissolved in another substance, known as the solvent
suspension a mixture in which particle can be seen and easily separated by settling or filtration
filtration the act or process of filtering, especially the process of passing a liquid or a gas, such as air, through a filter in order to remove solid particles
solubility solubility is a measure of how much solute can dissolve in a solvent at a given temperature
magnetic attraction Magnetic Attraction- passing a magnet over a mixture to remove the magnetic particles from within the mixture
evaporation the conversion of a liquid into vapor in order to remove it wholly or partly from a liquid of higher boiling point or from solids dissolved in or mixed with it. Boiling salt water will evaporate the water and leave the salt behind
settling allowing a suspension to sit still will cause the larger, heavier particles to settle, or sink to the bottom
chromatography the separation of mixtures into their constituents by preferential absorption by a solid, as a column of silica or a strip of filter paper or by gel
solvent the part of a solution present in the largest amount
solute the substance that is present in the smallest amount
concentration refers to the amount of one substance in another
dilute solution a mixture that has only a little solute dissolved in a certain amount of solvent
concentrated solution a mixture that has a lot of dissolved in a certain amount of solvent
saturated solution when you've added so much solute that no more dissolves, you have a saturated solution
unsaturated solution if you continue to dissolve more solute, you have a unsaturated solution
temperature a hot cup of tea will dissolve more sugar than a cold cup of tea..... but cold soda will dissolve more carbon dioxide gas than warm soda.
type of solvent certain things dissolve certain things better than others
pressure increases it and you can dissolve more solute, like carbon dioxide in soda. Decreases it and the solute will come out, like when you open the soda.
Created by: Hobbsb1
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