Stack #58139
Quiz yourself by thinking what should be in
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| the prediction of results of a scientific prediction (based on primarily background research) | hypothesis
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| the variable that is manipulated, the one thing that is different in an experiment | Independent Variable
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| The variable that is measured in an experiment | Dependent Variable
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| (set up to give us something to compare the experimental group to) the “normal” group | control group
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| contains the independent variable | Experimental group
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| A decision or judgment made that states whether or not your data supports your hypothesis. | conclusion
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| things in an experiment that should all be the same to ensure accuracy | constants
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| a test of the hypothesis | experiment
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| what are two things an experiment should contian | Control group and an experimental group
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| A group of high school students who follow a specific exercise routine are compared with students who do their normal activities. Name the control group and the experimental group. | Control - do normal activities. Experimantal - do specified activities
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| the amount of space an object takes up. | volume
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| the amount of matter in an object | mass
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| the measurement of how closely packed matter is in an object | density
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| the amount of energy in an object | temp.
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| the metric unit used for mass | gram
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| the metric unit used for volume | liter
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| the metric unit used for distance | meter
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| review the lab tools | in psci folder
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| practice dimentional anayisys | in psci folder
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| know appropriate units for everydat objects | in psci foleder
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| the force of attraction on all objects in the universe | Gravity
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| the smallest particle of an element that still has the properties of that element. | Atom
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| a mixture that has solid particles but they stay suspended and don’t settle out over time: jello, mayo, whipped cream, egg whites. | Colloid mixture
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| a micture made up of two different materials | Hetorgeneous mixture
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| a type of mixture made up of the same material | Homogeneous mixture
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| negatively charged subatomic particles that are located outside the nucleus of an atom. These are the only subatomic particle involved in bonding. | Electron
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| particals far apart | low Density
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| particals close together | high density
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| formula for density | d=m/v
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| a single substance made up of only one atom | element
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| a mixture that settles out over time. Solute particles are very large. Ex. Italian dressing. | suspension
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| particles that are smaller than an atom - protons, neutrons and electrons | subatomic particles
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| the state of matter where it's particles are packed closely together and vibrateing. | solid
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| levels around the nucleus that contain the electrons. | energy level
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| how many electrons can be in each level | 1- 2, 2 - 8, 3 - 18(stable at 8)
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| the chemical bonding of two or more different elements creates this | compound
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| a type of mixture like cool aid, no separation is visible and all particles are same size and evenly distributed. | solution
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| a subatomic particle that is found in the nucleus and has a neutral charge. It contributes to the atomic mass | neutron
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| a state of matter where the particles are close togerher but flowing over eachother | Liquids
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| an atom of an element | molecule
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| an unpure combination, just mixed, doesn't go through a chemical reaction | Mixture
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| a mixture of two or more of the same element | Homogeneous mixture
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| a subatomic particle with a positive charge found in the nucleus | Proton
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| the state of matter where the particles are far apart and moveing quickly | Gas
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| the state of matter where the particles very apart, electrons torn of the nucli and zipping around in space | Plasma
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| what are the differences between weight and mass | weight is the measurement of the pull of gravity on an object and mass the the amound of matter in an object
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| beable to distinguish mixtures and compounds | in notes
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| practice finding density | in notes
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| compare and contrast the differences of colloids, suspensions, and solutions. give examples of each | see matter notes
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| be able to identify the historical atom models and order them on a timeline. | see periodic table notes
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| the symbol of an element | chemical symbol
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| the number of protons in an atom. This defines the element | atomic number
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| the weight of an element | atomic mass
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| what is the unit for measureing the mass of an atom? | amu - atomic mass unit
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| a diagram that shows the nucleus, all of the energy levels, and tells the numbers of the electrons in each energy level | Bohr model
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| all the elements to the left of the Zig - Zag line. The are mallieable and ductile, good conductors of heat and electricity. | metals
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| every element touching the Zig - Zag line. not mallieable or ductile, bad conductors of heat and energy. | non metals
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| all the elements touchting the zig - zag line except aluminum. They are a mixture of the properties of metals and non metals | metalloids
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| the group of elements that form bright colord compounds. They have 1-3 valence electrons and +1 - +3 oxidation number | transition metals
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| the top bar underneath the larger part of the PT | Lanthanides
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| the bottom bar on the PT. It contains mostly manmade elemets. | Actinides
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| what are inner transitional elements | find out what this is from mrs. harper
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| the group that contains elements in all phases - solid, liquid, and gas. It has 7 valence electrons | Halogens
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| the group that contains only non reactive elements - it has full outer erergy level. oxidation # 0 | Noble Gasses
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| extreemly reactive group of elements that are never found uncombined in nature | Alkali metals
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| reactive elements found in the 2nd column. never found uncombinded in nature | Alkali earth metals
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| be able to locate each group on the chart and give basic info | see pt and notes
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| know how to use periodic table and make atom models | see notes and PT
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| the combining of different elements in various proportions to form new substances. | chemical bonding
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| electrons in the outermost energy level the only electrons involvein in bonding | valance electrons
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| : the resulting charge on an atom once after losing or gaining electrons in an attempt to become stable. | oxidation number
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| Electrons are transferred and ions attract each other. Between metals and non metals - electrons are "stolen" | ionic bonding
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| charged particles (atoms that have gained or lost particles | ion
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| bonding where electrons are shared. only between metals | covalent bonding
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| crystal lattice | crystal lattice find out what it is
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| a compound with an overall charge. | polyatomic ion
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| subscript | dito
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| know how to write chemical formulas | check practice sheets
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| know how to find valence electrons and oxidation numbers | found on PT
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| how do you know what type of bond is involved with a compound? | look at each atom - ionic - metals and non metals, covalent - metals. metalloid-?
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| how do you find out how many atoms are in a compound by looking at it's formula? | look at the subscripts, each element without a subscript counts as one atom of that element.
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