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- 1. Multiple ChoiceNeutrons arenegativepositiveneutralatoms
- 2. Multiple ChoiceThe positive particles of an atom areelectronsatomsneutronsprotons
- 3. Multiple ChoiceThe central region of an atom where its neutrons and protons are is called thenucleuselectron cloudenergy levelcenter
- 4. Multiple ChoiceElectrons arenegative and in the nucleuspositive and in energy levelespositive and in the nucleusnegative and in energy levels
- 5. Multiple ChoiceWhat is matter?any visible solid that has massany liquid that takes up space and has massanything that takes up space and has massany liquid or solid that takes up space
- 6. Multiple ChoiceWhat kind of chemical bond is formed when one atom gives electrons to another atom?magneticionicvan der waahlscovalent
- 7. Multiple ChoiceA chemical bond that occurs when atoms share electrons is a(n) _______ bond.ioniccovalentvan der waalsmagnetic
- 8. Multiple Choice
Ionic, covalent, van der Waals forcesare types of atomsare compoundshold molecules and atoms togetherare of no consequence in life forms - 9. Multiple ChoicePhysical and chemical properties are different from the elements that make them up inmixturescompoundsatoms
- 10. Multiple ChoiceA number of elements have different number of neutrons, these elements are calledcompoundsmoleculesisotopesatoms
- 11. Multiple ChoiceThe ____ charge of a proton is exactly balanced by the ____ charge of (an) _______negative, positive, electronpositive, neutral, neutronpositive, negative, electronneutral, negative, electron
- 12. Multiple ChoiceElectrons move around the nucleus of an atom in pathways callednucluesenergy levelscirclesrings
- 13. Multiple ChoiceIf a substance contains two or more elements of different types, it is considereda compounda monomera moleculeorganic
- 14. Multiple ChoiceWhat is the study of the composition, structure, and properties of MATTER?ChemistryBiologyGeologyPhysics
- 15. Multiple ChoiceWhat are the building blocks of MATTER?AtomsCellsProtonsNeutrons
- 16. Multiple ChoiceThe nucleus of an atom is made up of...Protons and NeutronsNeutrons and ElectronsProtons and Electrons
- 17. Multiple ChoiceA(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.ElementCompoundMoleculeMixture
- 18. Multiple ChoiceWhat holds atoms, molecules, and compounds together?Chemical BondsElectromagnetismMagnetismElectricity
- 19. Multiple ChoiceWhat is the weakest of all the bonding types?CovalentIonicvan der waals forcesthey are all equal
- 20. Multiple ChoiceTrue or False? Isotopes are atoms of the same element that differ in mass number and number of neutronsTrueFalse
- 21. Multiple ChoiceWhat are the 3 particles that make-up the atom?protons, neutrons, and isotopesneutrons, isotopes, and electronspositives, negatives, and electronsprotons, neutrons, and electrons
- 22. Multiple ChoiceIons are:atoms with a positive or negative chargeatoms with no chargeatoms with ONLY a positive chargeatoms with ONLY a negative charge
- 23. Multiple ChoiceWhat is the dense, positively charged center of the atom?neutronnucleusprotoncation
- 24. Multiple ChoiceNaCl (table salt) is an example of a/n __________atomelementcompoundsubatomic particle
- 25. Multiple ChoiceIron (Fe) is an element.truefalse
- 26. Multiple ChoiceWhat two elements make up water?Helium and oxygenHydrogen and oxygenhelium and carbonoxygen and carbon
- 27. Multiple ChoiceWhat word describes when water is attracted to other substances?cohesionadhesioncapillary actionsurface tension
- 28. Multiple ChoiceWhy can water have no net charge but have slight charges in different parts of the molecule?The oxygen end is slightly negative and the hydrogen end is slightly positiveThe hydrogen end is slightly negative and the oxygen end is slightly positiveThe hydrogen and oxygen ends change in polarityBecause it is hydrophobic
- 29. Multiple ChoiceAttractions between water molecules are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 30. Multiple ChoiceThe attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attracted to other water molecules.adhesioncapillary actioncohesionsurface tension
- 31. Multiple Choicetendency of molecules of the same kind to stick to one anothercohesionadhesionsolutionpolar molecule
- 32. Multiple Choicemolecule in which opposite ends have opposite electric chargescohesionpolar moleculehydrogen bondsolution
- 33. Multiple ChoiceWhy does ice float?As water freezes, it expands and its density decreases.As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.As water freezes, air becomes trapped between the hydrogen bonds of water molecules.As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
- 34. Multiple ChoiceA molecule with electrically charged areas is called a _______________.magnetpolar moleculesolutionelectrical molecule
- 35. Multiple ChoiceWhich end of the water molecule has a slightly positive charge?the oxygen endthe hydrogen endboth ends are slightly positiveneither end is positive
- 36. Multiple ChoiceWhich types of compounds dissolve easily in water?Polar and NonpolarPolar and IonicNonpolar and IonicCovalent and Nonpolar
- 37. Multiple ChoiceWater droplets take a spherical shape (as pictured) because of ____________adhesioncohesioncapillary actionsolubility
- 38. Multiple ChoiceThe reason the water balloon did NOT pop while held over a flame is water's _________.Less dense than air.Hydrogen bonds between water molecules.polarity.high specific heat capacity.
- 39. Multiple ChoiceWater molecules are attracted to other kinds of molecules because of the property.CohesionAdhesionSurface TensionUniversal Solvent
- 40. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 41. Multiple ChoiceWater beads up on the surface of a penny because of this property.AdhesionHigh Surface TensionUniversal SolventChanges in Density
- 42. Multiple ChoiceMost of water's properties occur because it is...A polar covalentMade with oxygenA polar ionicMakes up 75% of the Earth
- 43. Multiple ChoiceWhat is the reason why oil and water don't mix?Oil is too heavy to mix with waterWater can only mix with polar moleculesWater can only mix with non-polar moleculesOil is too light to mix with water
- 44. Multiple ChoiceThe fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid formless polarmore polarless densemore dense
- 45. Multiple ChoiceWater molecules require a lot of energy to separate one from the others. This gives water a highdensitypolaritysolvencyspecific heat
- 46. Multiple ChoiceWhich of the following compounds would contain a polar covalent bond?Cl2NaClH2OCH4
- 47. Multiple ChoiceBecause of the unique properties of water associated with hydrogen bonding, water evaporates from pores on the leaves of plants and draws molecules in a continuous chain from the roots up through the vascular tissues of plants. Which of these groups of terms describes the properties of water that explain this?adhesion, cohesion, and translocationadhesion, cohesion, and transcriptioncohesion, hybridization, and transpirationcohesion, adhesion, and transpiration
- 48. Multiple ChoiceMany __________ come together to form one ______________.monomers; polymerpolymers; monomer
- 49. Multiple ChoiceWhich of these categories includes all of the others shown?disaccharidecarbohydratestarchpolysaccharide
- 50. Multiple ChoiceWhich of the following elements is NOT found in carbohydrates?CarbonHydrogenNitrogenOxygen
- 51. Multiple ChoiceOrganisms use carbohydrates forEnergyStructural Building BlocksHereditary InformationEnergy & Structural Building Blocks
- 52. Multiple ChoiceSimple sugars, like glucose, are calledmonosaccharidesdisaccharidespolysaccharidesstarch
- 53. Multiple ChoiceAn important carbohydrate polymer islactoseglucosestarchfructose
- 54. Multiple Choice_________ is a carbohydrate polymer that humans cannot digest and that make up cell walls of plants.StarchCelluloseGlucoseLactose
- 55. Multiple ChoiceWhich of the following about UNSATURATED fats is true?They are more common in animals than in plants.They have double bonds in their fatty acid chains.They generally solidify at room temperature.They contain more hydrogen than saturated fats having the same number of carbon atoms.
- 56. Multiple ChoiceLipids are ____________, and are ____________ in water.polar; solublepolar; insolublenonpolar; solublenonpolar; insoluble
- 57. Multiple ChoiceIn which of the following ways is the structure of a triglyceride different than that of a phospholipid?A phospholipid has a polar region.A triglyceride contains glycerol region and a phospholipid doesn't.A phospholipid has fatty acid tails, and a triglyceride doesn't.A triglyceride has a polar region.
- 58. Multiple ChoiceWhich has more energy, 1.0 g of carbohydrate or 1.0 g of lipid?CarbohydrateLipid
- 59. Multiple ChoiceA fatty acid chain with only C-C bonds (single bonds) is ________________ and makes the molecule a solid at room temperature, like butter or lard.saturatedunsaturated
- 60. Multiple ChoiceLipid bilayers are the basis for what important cell structure?CytoskeletonCtyoplasmCell membraneCell wall
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