7Compounds pure substance composed of two or more elements that are chemically combine Table salt- sodium and chlorineWater- hydrogen and oxygenSugar- carbon, hydrogen, and oxygenCarbon dioxide- carbon and oxygenBaking soda- sodium, hydrogen, carbon, and oxygenAn unfrosted chocolate cakeIce cream
8WaterCarbon DioxideBaking SodaUnfrosted chocolate cakeIce CreamSugarTable Salt
9Mixture A combination of two or substances that are not chemically combined CoffeeSoilSoupPizzaMilkNail Polish
11Element: A pure substance that cannot be separated or broken down into simpler substances by physical or chemical meansCompound: A pure substance composed of two or more elements chemically combine
12Compounds and Mixtures The difference between compounds and mixtures
13The Differences Physically combined MixturesPhysically combinedPhysically or mechanically separatedKeeps original propertiesEither homogenous or heterogeneousCompoundsChemically combinedChemically separatedDoes not always keep original propertiesWhen 2 or more atoms bond in a chemical reactionHomogenous
15Ability of a substance to dissolve into water It is a physical changeMakes a solution; a type of mixtureIncreases as the temperature of water doesSolute- what is being dissolved; example: sugarSolvent- does the dissolving; example: water
16Winston S. Andrew S. Hanna T. Lara H. Scientific TermsWinston S. Andrew S.Hanna T. Lara H.
17Heterogeneous The substance appears different Cake Pizza Soup SandwichesChocolate Chip cookies
18Homogeneous The substance appears the same through out it Chocolate ice creamMilkHershey’s KissMashed potatoesWater
20Homogeneous and Heterogeneous Same and DIfferent
21Homogeneous The same Because they all look the same.
22Heterogeneous Different Because the leaves and actual fruit have different appearances.
23Heterogeneous Different Because it has the meat bun and mustard which is all different.
24Homogeneous vs. Heterogeneous By Ariella, Aviva, and Dain
25Bread with crust is Heterogeneous! Bread without crust is homogeneous!
26Cantaloupe is Heterogeneous because there are seeds, fruit, and skin on the outside.
27Chocolate without the wrapper is homogeneous because it is just chocolate!
28Raspberries (not in the crate) are heterogeneous.
29An egg is heterogeneous. There is the shell, the yolk, and the white.
30A peanut butter and jelly sandwich is heterogeneous because it has bread, crust, jelly, and peanut butter. (Ariella likes butter too!)
31Thanks for Learning about food! (DO WELL ON THE TEST)
32A presentation brought to you by Chase N. Bowlin SOLUBILITYSOLUBILITYA presentation brought to you by Chase N. Bowlin
33Solubility- the measure of how much of a substance will dissolve in a given volume of water. Solubility is a physical change and is dissolving sugar, salt,ect. In waterAlso it is-The ability to dissolve in another substance, more specifically, the amount of solute needed to make saturated solution using a given amount of solvent at a certain temperature.
34Facts and examples High solubility: sugar dissolves readily in water Low solubility: sugar does not dissolve easily in waterCompounds have either high or low solubilityExamplessugar in water=a very strong solvent depending on how much sugar you put in.
35Substances being Soluble If a substance is soluble it means that that substance has the ability to be dissolved into another substance like salt.Salt is an example because it can be dissolved into water that is hot.
36INSOLUBLE SUSBTANCES OMG!!!!!! If a substance is INSOLUBLE It means that substance DOES NOT have the ability to be dissolved.OIL is a great example of an insoluble substance because when oil is pored into a beaker full of water the oil forms clots and floats to the surface thus rendering the substance INSOLUBLE.
37Elements, Compounds, Mixtures By: Amanda Bauer and Marianne Galbraith
38Compounds Compounds are chemically combined/seperated. Compounds are made of two or more Elements.Different properties from Elements that formed it.Compounds can be identified by physical and chemical properties.
39Mixtures Mixtures can be physically seperated. Mixtures keep their original properties.No definite ratio (no exact amount)
40Properties of Mixtures Mixtures keep their original properties.Mixtures have no definite amount.You can physically separate them.
41Elements Elements are pure substances. Elements can not be seperated by physical or chemical means.Each Element only contains one particle.Elements are in three groups, metals, non metals, and metalloids.
43Phase Changing Plateaus because the phase change has to happen When energy is being added the substance will get hotterWhen energy is being taken away the substance will get colder
44Condensation Vs Vaporization Condensation and Vaporization happen at the same timeVaporization is liquid turning to a gas
45Sublimation Sublimation is a solid turning to a gas An example is Dry Ice
46Freezing, Melting, Boiling and Vaporization Freezing- Liquid turning into a solidMelting- Solid turning into a liquidVaporization- Liquid turning into a gasBoiling- Liquid to gas
47Examples Melting- Ice to water Freezing- Water to ice Sublimation- Dry iceBoiling- Liquid to gas
48Physical & Chemical properties By: Tim, Otto, Reyna
49Physical PropertiesPhysical properties of matter can be observes or measured without changing the identity of the matter.
50Chemical propertiesChemical properties describe a substance based on its ability to change into a new substance with different properties.
51Compounds and Mixtures By: MacKenzie Moore and Andi Holmes
52Compounds Chemically combined Own set of properties Made of 2 or more substancesDefinite RatiosCan not be physically seperatedNot on the Periodic Table
53Mixtures Made of 2 or more substances Not on the Periodic Table Physically combinedCan be physically seperatedNo specific ratios
54Compounds vs. Mixtures Chemically combined Definite ratio Can not be physically seperatedNot on periodic tableDo not retain original properties2 or more substancesPhysically combinedNo definite ratioCan be physically seperatedNot on periodic tableRetains their original properties2 or more substances
55When you add energy, Solid’s go to liquids (melting) Liquid’s go to gasses (Vaporization)And sometimes Solid’s go to gasses. (Sublimation)
56When you take away energy, Gasses go to liquids. (condensation)Liquids go to Solids. (Freezing)
57Knifty FacksAll states of matter must change states before temperature rises.ALL CHANGES ARE PHYSICAL!NOT CHEMICAL! GET THAT STRAIT!!!
58Compounds Chemically combined Two or more elements together Cannot be physically separatedThe new characteristics are completely different than the original elementsNew set of chemical and physical propertiesNew set of chemical and physical changesDefinite amount of each element
60Mixtures Two or more substances physically combined Can be separated by physical meansRandom amount of elements and compoundsEach substance keeps their own physical and chemical propertiesAll of the substances still have their own physical and chemical changes
62Elements Pure substances Cannot be broken down Are always on the Periodic Table of ElementsWhatever amount of the element there is, the atoms are always the sameUnique chemical and physical propertiesUnique chemical and physical changes
64Chemical and Physical Changes Created By: Uriel & Baleigh
65Definitions – ChangesChemical Change – A chemical change is when an object turns into something new.Example: Burning an object to change it into something new.Physical Change – Changing the way a substance looks.Example: Changing the color of an object.
66Definitions – Properties Chemical Property – The ability to change a substance from one object to another.Example: FlammabilityPhysical Property – A physical characteristic of an object. An object’s appearance.Example: Color