Presentation on theme: "Physical Science Chapter 2"— Presentation transcript:
1Physical Science Chapter 2 What is Matter?Physical ScienceChapter 2
2Matter Anything that has mass and takes up space All the materials you can hold or touchExamplesYouThis computerThe air you are breathing
3Atom = smallest particle that has the properties of an element Atoms are matterAtom = smallest particle that has the properties of an elementAtoms make up elements
4ElementsElement = a substance that cannot be broken down into simpler substancesAn example of an element is carbonSo, carbon is an element and elements are made of atoms
5Elements Each element has a one or two letter symbol Each are unique and behave differentlyWhat element is shown here?
6CompoundsMost substances exist on Earth and in the human body as compounds, not free elementsA compound is a substance made of more than one element bound togetherCarbon = blackOxygen = redHydrogen = white
7+ = Compound Properties Specific compounds always combine in the same proportionsEvery water molecule has 2 hydrogens and 1 oxygenCompounds have properties very different from their individual elements+=
8Chemical FormulasContains the symbols for each element in a compound and the numbers for each atom of each elementH2OCO2CH4NaCl
9Pure SubstancesMatter with a fixed composition and definite propertiesExamples are atoms, elements, and compoundsCannot be separated by physical actions
10+ + = Mixtures NOT PURE SUBSTANCES Made of pure substances, but composition is not fixedCan be separated by physical actions++=
11Types of MixturesHeterogeneous = substances are not uniformly mixed throughout, you can see the layersHomogeneous = evenly mixed throughoutLayers are not visibleAlso called a solutionGranite is a common and widely-occurring type of intrusive, felsic, igneous rock.Granite primarily consists of orthoclase and plagioclase feldspars, quartz, hornblende, muscovite and/or biotite micas, and minor accessory minerals such as magnetite, garnet, zircon and apatite. Rarely, a pyroxene is present.
12More Mixtures Gases can also mix with liquids Gases are usually dissolved in waterExamples are carbonated drinksHomogeneous mixtures (solutions)Contain sugar, flavorings and carbon dioxide dissolved in water