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- 1. Multiple ChoiceWhat is the smallest unit of all matter?atomprotonneutronelectron
- 2. Multiple ChoiceWhich of the following is not true about protons?It is the smallest subatomic particleIt has a charge of +1It has a mass of 1 amuIt is found in the nucleus
- 3. Multiple ChoiceWhich of the following is true about electrons?It is the smallest subatomic particleIt has a charge of +1It has a mass of 1 amuIt is found in the nucleus
- 4. Multiple ChoiceThe tendency of an element to react with other elements to produce compounds.Chemical changeNeutrality
Reactivity
Valence - 5. Multiple ChoiceThe number of protons in the atoms of a particular element that is unique only to that element.Atomic MasAtomic Number
Proton NumberMole - 6. Multiple ChoiceThe number of negatively charged particles in the most outer shell.Valence ElectronsValence NeutronValence ProtonValance Particles
- 7. Multiple ChoiceA chemical substance made up of two or more kinds of atoms bonded together.MixtureSolutionCompound
None of the above - 8. Multiple ChoiceA pure substance containing only one type of atom.Element
Simple SubstanceSingle SubstanceMixture - 9. Multiple Choice
Which elements have the most similar chemical properties?K and NaK and CaK and ClK and S - 10. Multiple ChoiceWhich group of the periodic table is composed of inert (not reactive) gases?alkali metalsalkaline earth metalshalogensnoble gases
- 11. Multiple ChoiceWhich number is the atomic mass?79196.97
- 12. Multiple ChoiceWater and Kool-Aid are mixed together. Hot water, coffee and sugar are mixed together. Which substance is the solvent in both?WaterCoffeeKool-aidSugar
- 13. Multiple ChoiceAll are solutes exceptsugarpeppersaltpowdered chocolate
- 14. Multiple ChoiceAt higher temperaturesparticles in an object have less energyparticles in an object move fastera gas contracts
- 15. Multiple ChoiceThe molecules in the picture are tightly held together with little movement. They have shape and energy. Therefore, the picture represents _________.solidliquidgasplasma
- 16. Multiple ChoiceWhat is the change of state from a gas to a liquid called?depositionsublimationevaporationcondensation
- 17. Multiple ChoiceWhat happens when my glass of water is sitting in the sun and disappears into a gas?evaporationburningmeltingfreezing
- 18. Multiple ChoiceWhich of the following terms identifies the change from a liquid to gas?VaporizationCondensationDepositionSublimation
- 19. Multiple ChoiceWhen the temperature of matter increases the particles...speed up and move closerspeed up and move farther apartslow down and move closer togetherslow down and move farther apart
- 20. Multiple ChoiceAll changes in the state of matter of a substance requiresvibrationwaterpermissionenergy
- 21. Multiple ChoiceTrue or False - Protons and Neutrons have about the same mass.True - They have about the same massFalse - They do not have about the same mass
- 22. Multiple ChoiceWhich two subatomic particles make up the nucleus of an atom?Protons and ElectronsNeutrons and ElectronsElectrons and ProtonsProtons and Neutrons
- 23. Multiple ChoiceHow many electron shells/levels does this atom have?1234
- 24. Multiple ChoiceThis particle determines what element you have - the elements identity.electronprotonneutronvalence shell
- 25. Multiple ChoiceWhat is the mass number and name of an element with 8 protons and 8 neutrons?16 - Carbon16 - Oxygen24 - Oxygen8 - Neon
- 26. Multiple ChoiceAn element with a mass number of 10 and an atomic number of 6 has how many protons?58610
- 27. Multiple ChoiceEach column in the periodic table is called aperiodgroupclusterunit
- 28. Multiple ChoiceElements which are shiny, conduct electricity and heat are calledmetalnonmetalmetalloidnonexistent
- 29. Multiple ChoiceThe atoms along the staircase are calledmetalsnonmetalsmetalloidsnoble gases
- 30. Multiple ChoiceIn the modern periodic table elements are arranged by:atomic massatomic numbervalence electronsnumber of isotopes
- 31. Multiple ChoiceThe majority of elements on the periodic table areman made.nonmetals.metals.gases.
- 32. Multiple ChoiceWhich elements have the most similar chemical properties?K and NaK and CaK and ClK and S
- 33. Multiple ChoiceWhat period and group is Silver (Ag)?Period 2, Group 1Period 3, Group 16Period 5, Group 11Period 2, 14
- 34. Multiple ChoiceThe elements in this group have 5 valence electrons and include elements N, P, and As.Group 5Group 1Group 18Group 15
- 35. Multiple Choice
2 rows beneath the main periodic table
Lanthanide
Lanthanide and Actinide
Lanthanide and Hydrogen
Actinide and Hydrogen
- 36. Multiple ChoiceIs burning wood a chemical or physical change?chemicalphysical
- 37. Multiple ChoiceA solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?TextureTemperatureShapeMass
- 38. Multiple ChoiceWhich of the following is a sign that a chemical reaction has occurred?change in shapemeltingformation of a gasdissolving
- 39. Multiple ChoiceWhich of the following is NOT an example of a physical change?crumpled paperpencil sharpeningshrunken clothingrust
- 40. Multiple ChoiceWhat kind of properties can only be observed when a substance changes into a different substance?physical propertieschemical properties
- 41. Multiple ChoiceExample of a physical propertymagnetismreactivity with oxygenflammabilitynon-reactive
- 42. Multiple Choice
The mineral Sulfur tends to have a bad smell, almost like rotten eggs. The fact that Sulfur has a bad smell is what type of property?
Physical
Chemical
- 43. Multiple Choice
Sodium reacts with water and causes it to burn. This is an example of a
Physical Property
Chemical Property
- 44. Multiple Choice
When you combine sodium hydroxide with silver nitrate, it forms a precipitate. This represents what kind of property?
Physical
Chemical
- 45. Multiple ChoiceWhat is the name of this element?HeliumHydrogenArgonSilver
- 46. Multiple ChoiceWhat is the mass number of this atom?1347
- 47. Multiple ChoiceWhat group does this element belong to?Group 1: Alkali metalsGroup 18: Noble GasesGroup 2: Alkaline-Earth MetalsGroup 17: Halogens
- 48. Multiple ChoiceHow many valence electrons?23510
- 49. Multiple ChoiceWhen an atom loses an electron, it becomes a:positive ionnegative ionneutral ionneutral atom
- 50. Multiple ChoiceHow do positive ions form?by gaining electronsgetting complimentsby losing electronsgaining more protons
- 51. Multiple Choice
What is the correct chemical formula of aluminium oxide?
Al2O3
AlO2
Al3O
Al3O2
- 52. Multiple ChoiceIn a chemical equation, is it true that -the reactant side and product side can have different numbers of atoms for each elementthere can be different elements on the reactant side and the product sidean element or compound must be accompanied by a phase changethe coefficients indicate the number of molecules of each reactant used and the number of molecules of each product made
- 53. Multiple ChoiceWhich of the following models best demonstrates a balanced chemical equation?FGHJ
- 54. Multiple ChoiceThe formula below represents the most common carbohydrate known as glucose. Which information can be determined from the chemical formula?
C6H12O6The structural arrangement of the atoms in a glucose moleculeThe color of a glucose moleculeThe size of a glucose moleculeThe number of atoms of each element in a glucose molecule - 55. Multiple ChoiceFor an investigation a student poured a blue solution of CuSO4 into a beaker. The student placed a shiny, silver-colored strip of zinc metal in the solution and observed the changes.
The student inferred that a chemical reaction occurred. What evidence supports this inference?A dark solid formed on the zinc metal.
The zinc metal remained silver-colored and shinyThe CuSO4 solution turned blue when the zinc metal was added.None of these - 56. Multiple ChoiceTwo clear colorless solutions were combined.
The student observed that the temperature changed from 25 •C to 23 •C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?One of the original compounds came out of solutionThe solutions reacted chemicallySome of the water froze into ice crystalsRapid evaporation of water occurred, leaving a solid - 57. Multiple ChoiceThe equation below represents a chemical reaction that occurs in living cells. How many atoms are represented in the reactants of this equation?6
612
1224
2436
36 - 58. Multiple Choice
How many atoms in all are in a molecule of serotonin?
C10H12N2O
2224254 - 59. Multiple Choice
The Law of Conservation of Mass states
that matter exists in all states and reacts the same
that matter can only be changed into new substances by introducing a catalyst
that matter exists in the same state throughout any chemical change
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
- 60. Multiple Choice
a copper penny turning greenish after a few years.
Physical change
Chemical change
- 61. Multiple Choice
Which of the following IS a physical change?
Getting a haircut
Rusty metal
sour milk
A compound
- 62. Multiple ChoiceWhat type of reaction occurs in a hand warmerexothermicendothermic
- 63. Multiple ChoiceExothermic reactions...Absorb energyRelease energyRelease ColorAbsorb Color
- 64. Multiple Choice
When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?
Endothermic
Decomposition
Exothermic
Indothermic
- 65. Multiple Choicehow many grams of potassium react with 16 grams of oxygen to produce 94 grams of potassium oxide781111694
- 66. Multiple Choice24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride62382414
- 67. Multiple ChoiceDoes this chemical equation support the law of conservation of mass? H2 + O2 --> H20YesNo
- 68. Multiple Choice
Why were there blank spaces left in Mendeleev's periodic table?
He didn't know what to put there.
Undiscovered elements not yet known.
Multiple elements could have fit
He forgot to add the elements in.
- 69. Multiple Choice
_______________ developed the first periodic table and arranged the elements in order of increasing atomic mass.
Stevie Wonder
Sasha Vujacic
Dmitri Mendeleev
James Mosely
- 70. Multiple ChoiceSalt has a chemical formula of NaCl. Salt is a...CompoundElementMixtureNone of the Above
- 71. Multiple ChoiceThe picture shown here is what type of mixture?homogeneoushetergeneouspure substanceelement
- 72. Multiple ChoiceThis diagram represents a _____.pure substance that is a compoundmixture of elementspure substance that is an elementmixture of compounds
- 73. Multiple Choice
which of the following will make more salt dissolve in water?
watching death note
letting it watch youtube
heating the mixture
cooling the mixture
- 74. Multiple Choice
Which of the following are properties of a solution??
homogeneous
heterogeneous
a mixture
always GREEN!
- 75. Multiple Choice
What is the grade that you will earn on the unit chemistry test?
A
B
C
D
F
- Answer choicesTagsAnswer choicesTags