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- 1. Multiple ChoiceThe number of protons in an element can be found by:looking up the group the element is in.subtracting the atomic mass from atomic numberlooking up the atomic masslooking up the atomic number
- 2. Multiple ChoiceThe atomic mass on the periodic table is an average of all the ____ of an element based on abundance.protonsisotopesionscharges
- 3. Multiple ChoiceThe valence electrons are the outermost electrons which determine an elements ________.masskinetic energyreactivityhalf-life
- 4. Multiple ChoiceWhat is always different about 2 isotopes of the same element?Their number of protonsTheir number of electronsTheir number of NeutronsTheir reactivity
- 5. Multiple Choice
The horizontal row on the periodic table is called agroupfamilyperiodatomic number - 6. Multiple ChoiceA vertical column is called...grouptowerperiodcrew
- 7. Multiple ChoiceWhich of the following is the most metallic element in period 3?Boron (B)Sodium (Na)Argon (Ar)Silicon (Si)
- 8. Multiple ChoiceWhich of these element is the least metallic?Potassium (K)Carbon (C)Sulfur (S)Neon (Ne)
- 9. Multiple ChoiceThe number at the bottom of each square on the periodic table is the ...atomic numberatomic masschemical symbolelement name
- 10. Multiple ChoiceThe number at the top of each square on the periodic table is the ...atomic numberatomic massChemical SymbolElement Name
- 11. Multiple ChoicePure forms of these elements are stored in oil so they won't react with oxygen and water in the air.Alkali MetalsAlkaline-earth metalsHalogensNoble Gases
- 12. Multiple ChoiceDiamonds are a pure form of what element?CarbonOxygenSiliconSilver
- 13. Multiple ChoiceMost of the elements on the periodic table are classified as _____.MetalsNonmetalsMetalloidsPeriods
- 14. Multiple ChoiceThis class of elements are sometimes called "semiconductors."MetalsNonmetalsMetalloidsGroups
- 15. Multiple ChoiceWhich group of the periodic table is composed of inert (not reactive) gases?alkali metalsalkaline earth metalshalogensnoble gases
- 16. Multiple ChoiceElements which are shiny, conduct electricity and heat are calledmetalnonmetalmetalloidnonexistent
- 17. Multiple ChoiceThe atoms along the staircase are calledmetalsnonmetalsmetalloidsnoble gases
- 18. Multiple ChoiceWhich is a halogen?HeliumChlorineOxygenNeptune
- 19. Multiple ChoiceWhich is an alkali metal?MagnesiumIronSodiumEuropium
- 20. Multiple ChoiceElements in a ..................have similar chemical properties.periodgrouprow
- 21. Multiple ChoiceElements which are shiny, conduct electricity and heat are calledmetalnonmetalmetalloidnonexistent
- 22. Multiple ChoiceTrue or False: Elements in a group have the same number of electrons in their outer shell.truefalse
- 23. Multiple ChoiceIn what section would Transition Metals be found?orangelight bluebluewhite
- 24. Multiple ChoiceWhich section are the metals in?dark bluelight bluepurplepink
- 25. Multiple ChoiceWhat section is the least reactive?yellowreddark blueorange
- 26. Multiple ChoiceThe atomic number of this pictured element is2858.6934NiNickel
- 27. Multiple ChoiceWho first had the idea of an atom?DemocritusDaltonThompsonRutherford
- 28. Multiple ChoiceThe drawing above is Thomson’s ________.cathode ray tube experimentoil drop experimentgold foil experiment
- 29. Multiple ChoiceWhat does the Bohr model suggest?Atoms are small, hard, indivisible objects.That protons in the nucleus are attracted to electrons in the electron clouds.That electrons travel around the nucleus of an atom in orbits or definite paths.
- 30. Multiple ChoiceWho is the scientist who proposed the "solar system" model of an atom where the electrons revolve around the nucleus?Dmitri MendeleevNiels BohrErnest RutherfordCopernicus
- 31. Multiple ChoiceWhat is an atom mostly made up of?protonselectronsempty spaceneutrons
- 32. Multiple ChoiceHas mass and takes up space, made up of atoms.mattermassatomsenergy
- 33. Multiple ChoiceA bag of Skittles is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- 34. Multiple ChoiceA solid block of gold (Au) is an example of this.ElementCompoundHeterogenous mixtureHomogenous mixture
- 35. Multiple ChoiceThese things are the building blocks of all matter.ElementsCompoundsHeterogeneous mixtureHomogeneous mixture
- 36. Multiple ChoicePaint is an example of this.ElementCompoundHeterogenous mixtureHomogeneous mixture
- 37. Multiple ChoiceSugar mixed into water is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- 38. Multiple ChoiceTrail mix is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- 39. Multiple ChoiceThese are substances that are a combination of two or more different elements.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- 40. Multiple ChoiceWhich box shows a mixture?ABCnone of these, they are all pure substances
- 41. Multiple ChoiceClassify CO2 as an element, mixture or compoundelementmixturecompound
- 42. Multiple ChoiceDIFFERENT kinds of atoms chemically combined to form a substance areMixtureElementCompoundSubstance
- 43. Multiple Choice
Mixture in which particles can be seen floating, but settle out to the bottom over time.
homogeneous mixture
suspension
colloid
heterogeneous mixture
- 44. Multiple ChoiceThis contains a variety elements and compounds that ARE NOT chemically combined.WaterMixtureElementsCompounds
- 45. Multiple ChoiceHow are the properties of elements related to the properties of the compounds they make?The properties of the compound are completely different than the properties of the elements.The properties of the compound are always the same as the properties of the elements.The element in the compound with the largest number of atoms gives the compound its properties.
- 46. Multiple ChoiceWhen potassium and bromine atoms form chemical bonds, which of these is produced?elementmixturecompound
- 47. Multiple ChoiceWhich drawing is of a single compound.ABCD
- 48. Multiple Choice
A type of mixture in which there are floating particles that do not settle out over time.
Hetergoeneous
Colloid
Solution
Suspension
- 49. Multiple Choice
Which of the following models best demonstrates a balanced chemical equation?
F
G
H
J
- 50. Multiple Choice
The reactants are on the left side of the chemical equation.
True
False
- 51. Multiple ChoiceWhat are the reactants in the chemical equation pictured?CH4 and CO2CH4 and O2CO2 and H2OO2 and H2O
- 52. Multiple ChoiceWhat is the large number written before a chemical formula called?CoefficientSubscriptReactantProduct
- 53. Multiple ChoiceWhat is the small number written after a chemical symbol called?CoefficientSubscriptProductReactant
- 54. Multiple ChoiceAccording to the law of conservation of mass...sometimes atoms are lostsometimes atoms are gainedatoms are never lost nor gainedatoms are lost and gained
- 55. Multiple ChoiceWhat do we call a substance that increases the rate of a reaction without participating in the reaction?catalystinhibitoracceleratordecelerator
- 56. Multiple ChoiceWhich of the following will increase the rate of a reaction?raising the temperature of reactantsgrinding the reactants into a powderincreasing the concentration of reactantsall of the above
- 57. Multiple ChoiceWhich of the following is a sign that a chemical reaction has occurred?change in shapemeltingformation of a gasdissolving
- 58. Multiple ChoiceWhich is a chemical change?freezing fruit juiceslicing a potatoboiling watercopper metal turning green
- 59. Multiple ChoiceBread is toasted. How do you know a chemical change happened?The temperature decreasedThe color changedIt bubbled/fizzedA solid formed
- 60. Multiple ChoiceThe Law of Conservation of Mass statesthat matter exists in all states and reacts the samethat matter can only be changed into new substances by introducing a catalystthat matter exists in the same state throughout any chemical changethat matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
- 61. Multiple ChoiceProducts are found on the _ side of a chemical equation.leftright
- 62. Multiple ChoiceBalance:
_KI + _Br2 -> _KBr + _I22, 1, 2, 11, 2, 1, 22, 1, 1, 21, 2, 2, 1 - 63. Multiple ChoiceBalance:
_K + _O2 -> K2O1, 1, 11, 2, 12, 1, 24, 1, 2 - 64. Multiple ChoiceAmount of matter in an object:volumeweightmassdensity
- 65. Multiple ChoiceVolume is the amount of space an object takes up.TrueFalse
- 66. Multiple ChoiceThe mass per unit of volume of a substance.DensityMassVolumeSolubility
- 67. Multiple Choice
Select all of the following that are physical properties.
Orange Color
Flammability
Melting Point
Solubility
- 68. Multiple Choice
Select all of the following that are chemical properties.
Reacts with acid
Density
Magnetism
Flammability
- 69. Multiple Choice
Select all of the following that are physical changes.
Ag (Silver) tarnishes
Food is digested
Ice melts
Salt dissolves in water
- 70. Multiple Choice
Select all of the following that are chemical changes.
Ag (Silver) tarnishes
Baking soda reacts w/ vinegar
Tire is inflated
Food is digested
- 71. Multiple Choice
____________ make up ____________ which make up _______________.
Elements, Atoms, Compounds
Compounds, Elements, Atoms
Atoms, Elements, Compounds
Atoms, Compounds, Elements
- 72. Multiple Choice
Atomic mass is determined by which two subatomic particles?
neutrons + protons
electrons + neutrons
protons + electrons
- 73. Multiple Choice
Atomic charge is determined by which two subatomic particles?
neutrons + protons
electrons + neutrons
protons + electrons
- 74. Multiple Choice
What are the particles that make up protons and neutrons?
zorks
atoms
plasmids
quarks
- 75. Multiple Choice
What is the smallest particle of an element that still represents that element?
isotope
proton
atom
quark
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